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Current research on the relationship between drought and vegetation has focused on two aspects. One is the correlation analysis between climate factors and spatiotemporal variation of vegetation, and the other is the response of vegetation to climate change. Methods for large-scale plant stress resistance monitoring are still lacking. This study used Normalized Difference Vegetation Index (NDVI), Gross Primary Productivity (GPP), Modified Anthocyanin Content Index (mACI), and Shortwave Infrared Water Stress Index (SIWSI) to monitor vegetation changes under drought stress. A comprehensive monitoring method for plant stress resistance was constructed. This method comprehensively considered the stress resistance process of plants and established four indicators. Correlation analysis was carried out using the comprehensive score of crop stress resistance and the harvestless rate of each province. There was a negative relationship between crop stress resistance and harvestless rate. This method was applied to evaluate the resistance of different types of vegetation to drought stress in China. The results showed that: (1) Plant stress resistance varied greatly in different seasons. It was weakest in summer and strongest in winter. The spatial heterogeneity of plant stress resistance in China was significant. In spring, the regions with comprehensive scores lower than 70 were mainly located in Shanxi and northern Shaanxi. The regions with comprehensive scores higher than 90 were mainly concentrated in northeastern Inner Mongolia and the southern part of Yunnan; (2) There were obvious differences in the stress resistance of different types of vegetation. In summer, deciduous coniferous forest had the strongest stress resistance and the smallest intra-class differences. In spring and fall, grassland had the strongest stress resistance and the greatest intra-class differences. The comprehensive monitoring method of plant stress resistance is helpful to explore the law of plant stress resistance under drought stress, which provides references for helping reduce disaster risks. © 2022, Science Press. All right reserved.
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Journal of Geo-Information Science
ISSN: 1560-8999
CN: 11-5809/P
Year: 2022
Issue: 11
Volume: 24
Page: 2225-2233
Cited Count:
WoS CC Cited Count: 0
SCOPUS Cited Count:
ESI Highly Cited Papers on the List: 0 Unfold All
WanFang Cited Count:
Chinese Cited Count:
30 Days PV: 1
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