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学者姓名:汪小钦

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Building Type Classification Using CNN-Transformer Cross-Encoder Adaptive Learning From Very High Resolution Satellite Images SCIE
期刊论文 | 2025 , 18 , 976-994 | IEEE JOURNAL OF SELECTED TOPICS IN APPLIED EARTH OBSERVATIONS AND REMOTE SENSING
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Abstract :

Building type information indicates the functional properties of buildings and plays a crucial role in smart city development and urban socioeconomic activities. Existing methods for classifying building types often face challenges in accurately distinguishing buildings between types while maintaining well-delineated boundaries, especially in complex urban environments. This study introduces a novel framework, i.e., CNN-Transformer cross-attention feature fusion network (CTCFNet), for building type classification from very high resolution remote sensing images. CTCFNet integrates convolutional neural networks (CNNs) and Transformers using an interactive cross-encoder fusion module that enhances semantic feature learning and improves classification accuracy in complex scenarios. We develop an adaptive collaboration optimization module that applies human visual attention mechanisms to enhance the feature representation of building types and boundaries simultaneously. To address the scarcity of datasets in building type classification, we create two new datasets, i.e., the urban building type (UBT) dataset and the town building type (TBT) dataset, for model evaluation. Extensive experiments on these datasets demonstrate that CTCFNet outperforms popular CNNs, Transformers, and dual-encoder methods in identifying building types across various regions, achieving the highest mean intersection over union of 78.20% and 77.11%, F1 scores of 86.83% and 88.22%, and overall accuracy of 95.07% and 95.73% on the UBT and TBT datasets, respectively. We conclude that CTCFNet effectively addresses the challenges of high interclass similarity and intraclass inconsistency in complex scenes, yielding results with well-delineated building boundaries and accurate building types.

Keyword :

Accuracy Accuracy Architecture Architecture Buildings Buildings Building type classification Building type classification CNN-transformer networks CNN-transformer networks cross-encoder cross-encoder Earth Earth Feature extraction Feature extraction feature interaction feature interaction Optimization Optimization Remote sensing Remote sensing Semantics Semantics Transformers Transformers very high resolution remote sensing very high resolution remote sensing Visualization Visualization

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GB/T 7714 Zhang, Shaofeng , Li, Mengmeng , Zhao, Wufan et al. Building Type Classification Using CNN-Transformer Cross-Encoder Adaptive Learning From Very High Resolution Satellite Images [J]. | IEEE JOURNAL OF SELECTED TOPICS IN APPLIED EARTH OBSERVATIONS AND REMOTE SENSING , 2025 , 18 : 976-994 .
MLA Zhang, Shaofeng et al. "Building Type Classification Using CNN-Transformer Cross-Encoder Adaptive Learning From Very High Resolution Satellite Images" . | IEEE JOURNAL OF SELECTED TOPICS IN APPLIED EARTH OBSERVATIONS AND REMOTE SENSING 18 (2025) : 976-994 .
APA Zhang, Shaofeng , Li, Mengmeng , Zhao, Wufan , Wang, Xiaoqin , Wu, Qunyong . Building Type Classification Using CNN-Transformer Cross-Encoder Adaptive Learning From Very High Resolution Satellite Images . | IEEE JOURNAL OF SELECTED TOPICS IN APPLIED EARTH OBSERVATIONS AND REMOTE SENSING , 2025 , 18 , 976-994 .
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Building Type Classification Using CNN-Transformer Cross-Encoder Adaptive Learning from Very High Resolution Satellite Images Scopus
期刊论文 | 2025 , 18 , 976-994 | IEEE Journal of Selected Topics in Applied Earth Observations and Remote Sensing
Building Type Classification Using CNN-Transformer Cross-Encoder Adaptive Learning from Very High Resolution Satellite Images EI
期刊论文 | 2025 , 18 , 976-994 | IEEE Journal of Selected Topics in Applied Earth Observations and Remote Sensing
Building Type Classification Using CNN-Transformer Cross-Encoder Adaptive Learning From Very-High-Resolution Satellite Images Scopus
期刊论文 | 2024 | IEEE Journal of Selected Topics in Applied Earth Observations and Remote Sensing
Harmonizing Landsat-8 OLI and Sentinel-2 MSI: an assessment of surface reflectance and vegetation index consistency SCIE
期刊论文 | 2025 , 18 (1) | INTERNATIONAL JOURNAL OF DIGITAL EARTH
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Abstract :

Normalization of satellite images collected under various atmospheric conditions is critical for the comprehensive, long-term global surveillance of terrestrial surface alterations. This study utilized remote sensing data from the Sentinel-2A Multispectral Instrument (MSI) in polar orbit and the Landsat-8 Operational Land Imager (OLI) sensors, with multispectral global coverage of 10-30 m, to derive reflectance products using inversion algorithms. Validation and assessment were conducted using synchronous surface measurement spectra collected from four sites across three Chinese provinces in 2019. We corrected surface reflectance and derived vegetation indices across blue, green, red, near-infrared (NIR), and two short-wave infrared (SWIR) bands and normalized discrepancies. The phenological spatial distribution map for late rice in Jiangxi Province was constructed using normalized data outcomes. A robust linear correlation in reflectance across corresponding bands of the two satellite sensors was observed. The NIR and SWIR bands showed the most significant difference because of differences in their spectral response functions. A high degree of congruence was observed between Landsat-8 OLI and Sentinel-2 MSI sensor reflectance products, with root mean square error values consistently below 0.05. The derived conversion equations were highly accurate for harmonizing data from both sensor systems.

Keyword :

harmonization harmonization Landsat-8 OLI Landsat-8 OLI Sentinel-2 MSI Sentinel-2 MSI Surface reflectance (SR) Surface reflectance (SR) vegetation index vegetation index

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GB/T 7714 Zhang, Jiaqi , Zhou, Xiaocheng , Liu, Xueping et al. Harmonizing Landsat-8 OLI and Sentinel-2 MSI: an assessment of surface reflectance and vegetation index consistency [J]. | INTERNATIONAL JOURNAL OF DIGITAL EARTH , 2025 , 18 (1) .
MLA Zhang, Jiaqi et al. "Harmonizing Landsat-8 OLI and Sentinel-2 MSI: an assessment of surface reflectance and vegetation index consistency" . | INTERNATIONAL JOURNAL OF DIGITAL EARTH 18 . 1 (2025) .
APA Zhang, Jiaqi , Zhou, Xiaocheng , Liu, Xueping , Wang, Xiaoqin , He, Guojin , Zhang, Youshui . Harmonizing Landsat-8 OLI and Sentinel-2 MSI: an assessment of surface reflectance and vegetation index consistency . | INTERNATIONAL JOURNAL OF DIGITAL EARTH , 2025 , 18 (1) .
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Harmonizing Landsat-8 OLI and Sentinel-2 MSI: an assessment of surface reflectance and vegetation index consistency EI
期刊论文 | 2025 , 18 (1) | International Journal of Digital Earth
Harmonizing Landsat-8 OLI and Sentinel-2 MSI: an assessment of surface reflectance and vegetation index consistency Scopus
期刊论文 | 2025 , 18 (1) | International Journal of Digital Earth
Extracting vectorized agricultural parcels from high-resolution satellite images using a Point-Line-Region interactive multitask model SCIE
期刊论文 | 2025 , 231 | COMPUTERS AND ELECTRONICS IN AGRICULTURE
WoS CC Cited Count: 1
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Abstract :

Precise information on agricultural parcels is crucial for effective farm management, crop mapping, and monitoring. Current techniques often encounter difficulties in automatically delineating vectorized parcels from remote sensing images, especially in irregular-shaped areas, making it challenging to derive closed and vectorized boundaries. To address this, we treat parcel delineation as identifying valid parcel vertices from remote sensing images to generate parcel polygons. We introduce a Point-Line-Region interactive multitask network (PLR-Net) that jointly learns semantic features of parcel vertices, boundaries, and regions through point-, line-, and region-related subtasks within a multitask learning framework. We derived an attraction field map (AFM) to enhance the feature representation of parcel boundaries and improve the detection of parcel regions while maintaining high geometric accuracy. The point-related subtask focuses on learning features of parcel vertices to obtain preliminary vertices, which are then refined based on detected boundary pixels to derive valid parcel vertices for polygon generation. We designed a spatial and channel excitation module for feature interaction to enhance interactions between points, lines, and regions. Finally, the generated parcel polygons are refined using the Douglas-Peucker algorithm to regularize polygon shapes. We evaluated PLR-Net using high-resolution GF-2 satellite images from the Shandong, Xinjiang, and Sichuan provinces of China and medium-resolution Sentinel-2 images from The Netherlands. Results showed that our method outperformed existing state-of-the-art techniques (e.g., BsiNet, SEANet, and Hisup) in pixel- and object-based geometric accuracy across all datasets, achieving the highest IoU and polygonal average precision on GF2 datasets (e.g., 90.84% and 82.00% in Xinjiang) and on the Sentinel-2 dataset (75.86% and 47.1%). Moreover, when trained on the Xinjiang dataset, the model successfully transferred to the Shandong dataset, achieving an IoU score of 83.98%. These results demonstrate that PLR-Net is an accurate, robust, and transferable method suitable for extracting vectorized parcels from diverse regions and types of remote sensing images. The source codes of our model are available at https://github.com/mengmengli01/PLR-Net-demo/tree/main.

Keyword :

Agricultural parcel delineation Agricultural parcel delineation Multitask neural networks Multitask neural networks PLR-Net PLR-Net Point-line-region interactive Point-line-region interactive Vectorized parcels Vectorized parcels

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GB/T 7714 Li, Mengmeng , Lu, Chengwen , Lin, Mengjing et al. Extracting vectorized agricultural parcels from high-resolution satellite images using a Point-Line-Region interactive multitask model [J]. | COMPUTERS AND ELECTRONICS IN AGRICULTURE , 2025 , 231 .
MLA Li, Mengmeng et al. "Extracting vectorized agricultural parcels from high-resolution satellite images using a Point-Line-Region interactive multitask model" . | COMPUTERS AND ELECTRONICS IN AGRICULTURE 231 (2025) .
APA Li, Mengmeng , Lu, Chengwen , Lin, Mengjing , Xiu, Xiaolong , Long, Jiang , Wang, Xiaoqin . Extracting vectorized agricultural parcels from high-resolution satellite images using a Point-Line-Region interactive multitask model . | COMPUTERS AND ELECTRONICS IN AGRICULTURE , 2025 , 231 .
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Extracting vectorized agricultural parcels from high-resolution satellite images using a Point-Line-Region interactive multitask model EI
期刊论文 | 2025 , 231 | Computers and Electronics in Agriculture
Extracting vectorized agricultural parcels from high-resolution satellite images using a Point-Line-Region interactive multitask model Scopus
期刊论文 | 2025 , 231 | Computers and Electronics in Agriculture
Cross-modal feature interaction network for heterogeneous change detection SCIE
期刊论文 | 2025 | GEO-SPATIAL INFORMATION SCIENCE
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Abstract :

Heterogeneous change detection is a task of considerable practical importance and significant challenge in remote sensing. Heterogeneous change detection involves identifying change areas using remote sensing images obtained from different sensors or imaging conditions. Recently, research has focused on feature space translation methods based on deep learning technology for heterogeneous images. However, these types of methods often lead to the loss of original image information, and the translated features cannot be efficiently compared, further limiting the accuracy of change detection. For these issues, we propose a cross-modal feature interaction network (CMFINet). Specifically, CMFINet introduces a cross-modal interaction module (CMIM), which facilitates the interaction between heterogeneous features through attention exchange. This approach promotes consistent representation of heterogeneous features while preserving image characteristics. Additionally, we design a differential feature extraction module (DFEM) to enhance the extraction of true change features from spatial and channel dimensions, facilitating efficient comparison after feature interaction. Extensive experiments conducted on the California, Toulouse, and Wuhan datasets demonstrate that CMFINet outperforms eight existing methods in identifying change areas in different scenes from multimodal images. Compared to the existing methods applied to the three datasets, CMFINet achieved the highest F1 scores of 83.93%, 75.65%, and 95.42%, and the highest mIoU values of 85.38%, 78.34%, and 94.87%, respectively. The results demonstrate the effectiveness and applicability of CMFINet in heterogeneous change detection.

Keyword :

attention mechanisms attention mechanisms Change detection Change detection CNN CNN feature interaction feature interaction heterogeneous remote sensing images heterogeneous remote sensing images

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GB/T 7714 Yang, Zhiwei , Wang, Xiaoqin , Lin, Haihan et al. Cross-modal feature interaction network for heterogeneous change detection [J]. | GEO-SPATIAL INFORMATION SCIENCE , 2025 .
MLA Yang, Zhiwei et al. "Cross-modal feature interaction network for heterogeneous change detection" . | GEO-SPATIAL INFORMATION SCIENCE (2025) .
APA Yang, Zhiwei , Wang, Xiaoqin , Lin, Haihan , Li, Mengmeng , Lin, Mengjing . Cross-modal feature interaction network for heterogeneous change detection . | GEO-SPATIAL INFORMATION SCIENCE , 2025 .
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Cross-modal feature interaction network for heterogeneous change detection Scopus
期刊论文 | 2025 | Geo-Spatial Information Science
融合遥感影像与街景的城市行道树三维绿量估算
期刊论文 | 2025 , 53 (2) , 151-158 | 福州大学学报(自然科学版)
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Abstract :

针对三维绿量计算过程中树木参数获取成本较高的问题,提出一种融合高分辨率遥感数据和街景数据的城市行道树三维绿量估算方法.以福州主要辖区为例,首先基于高分二号(GF-2)遥感影像,获取城市行道树的二维分布;然后结合街景地图实现对行道树的树木参数量测;最后基于行道树的水平分布和垂直特征完成三维绿量的估算.结果表明,研究区内行道树整体分布不均衡.基于街景测量获取的树木参数精度较高,与实测数据相比,R2 大于 0.9.单位面积上的三维绿量在白马路路段较高,在福马路等路段较低,榕树对该研究区的三维绿量贡献最大,占研究区总绿量的 80%.与二维指标相比,城市行道树的三维绿量值更能体现城市行道树的三维立体差异,反映绿地实际生态效益.

Keyword :

三维绿量 三维绿量 百度街景 百度街景 立体景观 立体景观 虚拟测量 虚拟测量 行道树 行道树

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GB/T 7714 孔令凤 , 汪小钦 , 周小成 . 融合遥感影像与街景的城市行道树三维绿量估算 [J]. | 福州大学学报(自然科学版) , 2025 , 53 (2) : 151-158 .
MLA 孔令凤 et al. "融合遥感影像与街景的城市行道树三维绿量估算" . | 福州大学学报(自然科学版) 53 . 2 (2025) : 151-158 .
APA 孔令凤 , 汪小钦 , 周小成 . 融合遥感影像与街景的城市行道树三维绿量估算 . | 福州大学学报(自然科学版) , 2025 , 53 (2) , 151-158 .
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融合遥感影像与街景的城市行道树三维绿量估算
期刊论文 | 2025 , 53 (02) , 151-158 | 福州大学学报(自然科学版)
Unveiling the Intra-Annual and Inter-Annual Spatio-Temporal Dynamics of Sediment Inflow to Rivers and Driving Factors in Cloud-Prone Regions: A Case Study in Minjiang River Basin, China SCIE
期刊论文 | 2024 , 16 (22) | WATER
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Accurately delineating sediment export dynamics using high-quality vegetation factors remains challenging due to the spatio-temporal resolution imbalance of single remote sensing data and persistent cloud contamination. To address these challenges, this study proposed a new framework for estimating and analyzing monthly sediment inflow to rivers in the cloud-prone Minjiang River Basin. We leveraged multi-source remote sensing data and the Continuous Change Detection and Classification model to reconstruct monthly vegetation factors at 30 m resolution. Then, we integrated the Chinese Soil Loss Equation model and the Sediment Delivery Ratio module to estimate monthly sediment inflow to rivers. Lastly, the Optimal Parameters-based Geographical Detector model was harnessed to identify factors affecting sediment export. The results indicated that: (1) The simulated sediment transport modulus showed a strong Coefficient of Determination (R2 = 0.73) and a satisfactory Nash-Sutcliffe Efficiency coefficient (0.53) compared to observed values. (2) The annual sediment inflow to rivers exhibited a spatial distribution characterized by lower levels in the west and higher in the east. The monthly average sediment value from 2016 to 2021 was notably high from March to July, while relatively low from October to January. (3) Erosive rainfall was a decisive factor contributing to increased sediment entering the rivers. Vegetation factors, manifested via the quantity (Fractional Vegetation Cover) and quality (Leaf Area Index and Net Primary Productivity) of vegetation, exert a pivotal influence on diminishing sediment export.

Keyword :

Chinese soil loss equation Chinese soil loss equation cloud-prone regions cloud-prone regions monthly remote sensing vegetation index monthly remote sensing vegetation index optimal parameters-based geographical detector optimal parameters-based geographical detector sediment delivery ratio sediment delivery ratio sediment inflow to rivers sediment inflow to rivers

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GB/T 7714 Wang, Xiaoqin , Yu, Zhichao , Li, Lin et al. Unveiling the Intra-Annual and Inter-Annual Spatio-Temporal Dynamics of Sediment Inflow to Rivers and Driving Factors in Cloud-Prone Regions: A Case Study in Minjiang River Basin, China [J]. | WATER , 2024 , 16 (22) .
MLA Wang, Xiaoqin et al. "Unveiling the Intra-Annual and Inter-Annual Spatio-Temporal Dynamics of Sediment Inflow to Rivers and Driving Factors in Cloud-Prone Regions: A Case Study in Minjiang River Basin, China" . | WATER 16 . 22 (2024) .
APA Wang, Xiaoqin , Yu, Zhichao , Li, Lin , Li, Mengmeng , Lin, Jinglan , Tang, Lifang et al. Unveiling the Intra-Annual and Inter-Annual Spatio-Temporal Dynamics of Sediment Inflow to Rivers and Driving Factors in Cloud-Prone Regions: A Case Study in Minjiang River Basin, China . | WATER , 2024 , 16 (22) .
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Unveiling the Intra-Annual and Inter-Annual Spatio-Temporal Dynamics of Sediment Inflow to Rivers and Driving Factors in Cloud-Prone Regions: A Case Study in Minjiang River Basin, China Scopus
期刊论文 | 2024 , 16 (22) | Water (Switzerland)
Unveiling the Intra-Annual and Inter-Annual Spatio-Temporal Dynamics of Sediment Inflow to Rivers and Driving Factors in Cloud-Prone Regions: A Case Study in Minjiang River Basin, China EI
期刊论文 | 2024 , 16 (22) | Water (Switzerland)
Use of object-based Siamese neural network to build change detection from very high resolution remote-sensing images EI CSCD PKU
期刊论文 | 2024 , 28 (2) , 437-454 | National Remote Sensing Bulletin
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Building change detection is essential to many applications, such as monitoring of urban areas, land use management, and illegal building detection. It has been seen as an effective means to detect building changes from remote-sensing images. This paper proposes an object-based Siamese neural network, labeled as Obj-SiamNet, to detect building changes from high-resolution remote-sensing images. We combine the advantages of object-based image analysis methods and Siamese neural networks to improve the geometric accuracies of detected boundaries. Moreover, we implement the Obj-SiamNet at multiple segmentation levels and automatically construct a set of fuzzy measures to fuse the obtained results at multi-levels. Furthermore, we use generative adversarial methods to generate target-like training samples from publicly available datasets and construct a relatively sufficient training dataset for the Obj-SiamNet model. Finally, we apply the proposed method into three high-resolution remote-sensing datasets, i.e., a GF-2 image-pair in Fuzhou City, and a GF2 image pair in Pucheng County, and a GF-2—GF-7 image pair in Quanzhou City. We also compare the proposed method with three other existing ones, namely, STANet, ChangeNet, and Siam-NestedUNet. Experimental results show that the proposed method performs better than the other three in terms of detection accuracy. (1) Compared with the detection results from single-scale segmentation, the detection results from multi-scale increases the recall rate by up to 32%, the F1-Score increases by up to 25%, and the Global Total Classification error (GTC) decreases by up to 7%. (2) When the number of available samples is limited, the adopted Generative Adversarial Network (GAN) is able to generate effective target-like samples for diverting samples. Compared with the detection without using GAN-generated samples, the proposed detection increases the recall rate by up to 16%, increases the F1-Score by up to 14%, and decreases GTC by 9%. (3) Compared with other change-detection methods, the proposed method improves the detection accuracies significantly, i.e., the F1-Score increases by up to 23%, and GTC decreases by up to 9%. Moreover, the boundaries of the detected changes by the proposed method have a high consistency with that of ground truth. We conclude that the proposed Obj-SiamNet method has a high potential for building change detection from high-resolution remote-sensing images. © 2024 Science Press. All rights reserved.

Keyword :

Change detection Change detection Fuzzy sets Fuzzy sets Generative adversarial networks Generative adversarial networks Image enhancement Image enhancement Land use Land use Object detection Object detection Remote sensing Remote sensing

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GB/T 7714 Liu, Xuanguang , Li, Mengmeng , Wang, Xiaoqin et al. Use of object-based Siamese neural network to build change detection from very high resolution remote-sensing images [J]. | National Remote Sensing Bulletin , 2024 , 28 (2) : 437-454 .
MLA Liu, Xuanguang et al. "Use of object-based Siamese neural network to build change detection from very high resolution remote-sensing images" . | National Remote Sensing Bulletin 28 . 2 (2024) : 437-454 .
APA Liu, Xuanguang , Li, Mengmeng , Wang, Xiaoqin , Zhang, Zhenchao . Use of object-based Siamese neural network to build change detection from very high resolution remote-sensing images . | National Remote Sensing Bulletin , 2024 , 28 (2) , 437-454 .
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Use of object-based Siamese neural network to build change detection from very high resolution remote-sensing images; [基于面向对象孪生神经网络的高分辨率遥感影像建筑物变化检测] Scopus CSCD PKU
期刊论文 | 2024 , 28 (2) , 437-454 | National Remote Sensing Bulletin
Methods for supporting decision-making of precision watershed management based on watershed system simulation and scenario optimization EI CSSCI CSCD PKU
期刊论文 | 2024 , 79 (1) , 58-75 | Acta Geographica Sinica
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The construction of China's ecological civilization, known as 'Beautiful China', necessitates implementing precision watershed management through scientifically informed decision-making. This entails optimizing the spatial distribution of watershed best management practices (the so- called BMP scenario) and proposing multistage implementation plans, or roadmaps that align with practical requirements based on the overarching vision of comprehensive water shed management.The'water shed system simulation-scenariooptimization' method frame work (the simulation-and-optimization-based frame work for short) has demonstrated considerable potential in recent years. To address challenges arising from practical applications of this framework, this study systematically conducted the methodological research: (1) proposing a novel watershed process modeling framework that strikes a balance between modeling flexibility and high-performance computing to model and simulate watershed systems efficiently; (2) introducing slope position units as BMP configuration units and enabling dynamic boundary adjustments during scenario optimization, effectively incorporating practical knowledge of watershed management to ensure reasonable outcomes; (3) presenting an optimization method for determining the implementation orders of BMPs that considers stepwise investment constraints, thereby recommending feasible roadmaps that meet practical needs; and (4) designing a user-friendly participatory watershed planning system to facilitate collaborative decision-making among stakeholders. The effectiveness and practical value of these new methods, tools, and prototype systems are validated through application cases in a representative small watershed. This research contributes to advancing precision watershed management and provides valuable insights for sustainable ecological conservation. The methods proposed within the simulation-and-optimization-based framework in this study are universal methods, which means their application does not depend on the specific implementation, such as the watershed process model, the BMP types considered, the designed BMP configuration strategy, and so on. Further studies should be conducted not only to deepen related theory and method research but also to strengthen promotion and application, especially cooperating with local watershed management agents to provide valuable insights for their sustainable ecological conservation. © 2024 Science Press. All rights reserved.

Keyword :

Computation theory Computation theory Decision making Decision making Decision support systems Decision support systems Ecology Ecology Investments Investments Soil conservation Soil conservation Water conservation Water conservation Water management Water management Watersheds Watersheds

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GB/T 7714 Qin, Chengzhi , Zhu, Liangjun , Shen, Shen et al. Methods for supporting decision-making of precision watershed management based on watershed system simulation and scenario optimization [J]. | Acta Geographica Sinica , 2024 , 79 (1) : 58-75 .
MLA Qin, Chengzhi et al. "Methods for supporting decision-making of precision watershed management based on watershed system simulation and scenario optimization" . | Acta Geographica Sinica 79 . 1 (2024) : 58-75 .
APA Qin, Chengzhi , Zhu, Liangjun , Shen, Shen , Wu, Tong , Xiao, Guirong , Wu, Sheng et al. Methods for supporting decision-making of precision watershed management based on watershed system simulation and scenario optimization . | Acta Geographica Sinica , 2024 , 79 (1) , 58-75 .
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Methods for supporting decision-making of precision watershed management based on watershed system simulation and scenario optimization; [基于流域系统模拟-情景优化的精细治理决策支持方法] Scopus CSSCI CSCD PKU
期刊论文 | 2024 , 79 (1) , 58-75 | Acta Geographica Sinica
Analyzing the relationship between vegetation cover and soil erosion in the Minjiang river basin using remote sensing technology EI
会议论文 | 2024 , 12980 | 5th International Conference on Geoscience and Remote Sensing Mapping, ICGRSM 2023
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Abstract :

Soil erosion constitutes a critical environmental issue with far-reaching ramifications. Vegetation cover has been identified as a key factor in mitigating soil erosion. This study utilized remote sensing data and cloud computing resources provided by Google Earth Engine (GEE) to compute the land cover classification and Fractional Vegetation Cover (FVC) of the Minjiang River Basin in 2020. Subsequent to the utilization of the CSLE model incorporating precipitation data, Digital Elevation Model (DEM) data, and other relevant data, an assessment of soil erosion in the Minjiang River basin during 2020 was conducted. Furthermore, the correlation between FVC and soil erosion modulus was quantitatively examined. Our findings demonstrate that the predominant land cover type in the Minjiang River basin is forest and grassland, followed by arable land, with water having the smallest coverage. Over 65%of the study are a exhibits a FVC exceeding 0.8, indicative of a generally high level of vegetation coverage. The soil erosion modulus exhibited a marked decline with increasing FVC within the FVC intervals of 0-0.15 and 0.45-0.8. While the change of soil erosion modulus with FVC under other ranges was relatively flat. As such, erosion control measures may be more effective when implemented in the FVC ranges of 0-0.15 and 0.45-0.80. These findings provide decision-making references for governmental departments to formulate targeted soil and water conservation measures. © COPYRIGHT SPIE. Downloading of the abstract is permitted for personal use only.

Keyword :

Decision making Decision making Erosion Erosion Forestry Forestry Remote sensing Remote sensing Rivers Rivers Soil conservation Soil conservation Soils Soils Surveying Surveying Vegetation Vegetation Water conservation Water conservation Watersheds Watersheds

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GB/T 7714 Chen, Miao , Wang, Xiaoqin . Analyzing the relationship between vegetation cover and soil erosion in the Minjiang river basin using remote sensing technology [C] . 2024 .
MLA Chen, Miao et al. "Analyzing the relationship between vegetation cover and soil erosion in the Minjiang river basin using remote sensing technology" . (2024) .
APA Chen, Miao , Wang, Xiaoqin . Analyzing the relationship between vegetation cover and soil erosion in the Minjiang river basin using remote sensing technology . (2024) .
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Analyzing the relationship between vegetation cover and soil erosion in the Minjiang river basin using remote sensing technology Scopus
其他 | 2024 , 12980 | Proceedings of SPIE - The International Society for Optical Engineering
Construction of Adaptive Indicator Reduction Model for Ecological Environment Health Assessment EI CSCD PKU
期刊论文 | 2024 , 26 (5) , 1193-1211 | Journal of Geo-Information Science
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Abstract :

A healthy ecological environment forms a crucial foundation for the sustainable development of both nations and humanity. In the domain of ecological environment assessment, the comprehensive indicator system model represents the mainstream evaluation approach, both domestically and internationally. The extensive application of big geodata within this context offers significant potential for addressing ecological problems characterized by vast scales, intricate processes, and a variety of influencing factors. However, as the acquisition of big geodata becomes increasingly accessible, the coverage of the index system has significantly expanded, raising the pivotal issue of objectively and scientifically selecting crucial indicators capable of representing the distinctive characteristics of the study area. This challenge is particularly critical in today's ecological health assessment. The Pressure-State-Response (PSR) model offers a causal perspective, comprehensively considering the systemic relationships between the ecological environment and human socioeconomic activities. The Ecological Hierarchy Network (EHN) model is capable of reflecting the overlap and interconnections between upper and lower-layer indicators. In this study, by integrating the frameworks of PSR and EHN and taking into account the potential information overlap from multiple available parameters, we established a five-layer networked indicator system consisting of the Target Layer, Criteria Layer, Element Layer, Indicator Layer, and Homogeneous Indicator Layer. We also proposed a two-stage adaptive indicator reduction model that combines Homogeneous Indicator Layer reduction using the Technique for Order Preference by Similarity to Ideal Solution (TOPSIS) and Indicator Layer reduction based on target optimization theory. Combining both approaches, we developed an adaptive indicator reduction model tailored for ecological environmental health assessment. Leveraging big geodata comprising remote sensing thematic products, topography, meteorology, soil, and population information, we applied the proposed model to assess the ecological health of seven ecologically diverse regions in China, including Yunnan, Fujian, Beijing-Tianjin-Hebei, Shaanxi, Hubei, Xinjiang, and Jilin during the period 2001-2021. The results show that: (1) The selected indicators obtained through the two-stage indicator adaptive reduction model effectively reflected the distinct characteristics of ecosystems in different regions. Furthermore, indicators with higher weights among the selected ones have been widely employed in constructing indicator systems across various regions. These findings highlighted the universality and rationality of both the constructed indicator system and the two-stage indicator adaptive reduction model, effectively mitigating the subjectivity associated with manual indicator system construction; (2) The spatial distribution and temporal trends of the ecological environment health of the seven regions aligned with real-world conditions and were corroborated by existing literature and data, which indicated the effectiveness of the model proposed in this study. The proposed models presented in this paper can serve as a reference for constructing indicator systems and selecting indicators in other domains and provide methodological support for ecological environment health assessment across diverse regions on a large scale. © 2024 Science Press. All rights reserved.

Keyword :

Ecosystems Ecosystems Geographic information systems Geographic information systems Optimization Optimization Remote sensing Remote sensing Site selection Site selection Sustainable development Sustainable development Topography Topography

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GB/T 7714 Chen, Jianhui , Wang, Xiaoqin , Kong, Lingfeng . Construction of Adaptive Indicator Reduction Model for Ecological Environment Health Assessment [J]. | Journal of Geo-Information Science , 2024 , 26 (5) : 1193-1211 .
MLA Chen, Jianhui et al. "Construction of Adaptive Indicator Reduction Model for Ecological Environment Health Assessment" . | Journal of Geo-Information Science 26 . 5 (2024) : 1193-1211 .
APA Chen, Jianhui , Wang, Xiaoqin , Kong, Lingfeng . Construction of Adaptive Indicator Reduction Model for Ecological Environment Health Assessment . | Journal of Geo-Information Science , 2024 , 26 (5) , 1193-1211 .
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Construction of Adaptive Indicator Reduction Model for Ecological Environment Health Assessment; [面向生态环境健康评价的自适应指标约简模型构建] Scopus CSCD PKU
期刊论文 | 2024 , 26 (5) , 1193-1211 | Journal of Geo-Information Science
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