Mangrove　wetland　ecosystem　plays　a　vital　ecological　service　function　in　carbon　neutralization　and　coastal　protection.　In　recent　decades,　a　series　of　artificial　mangrove　wetlands　have　been　produced.　However,　the　sustainability　of　these　kind　of　mangrove　wetlands　has　not　been　fully　studied,　especially　on　the　landscape　scale.　This　study　explored　a　set　of　robust　and　transplantable　technical　routines　for　assessing　the　sustainability　of　mangrove　forest　landscape.　With　the　support　of　the　Google　Earth　Engine　(GEE)　cloud　platform,　the　temporal　and　spatial　evolution　pattern　of　artificial　mangroves　in　the　Luoyangjiang　River　estuary　was　obtained　from　1990　to　2023.　The　landscape　index　is　calculated　by　Fragstats　and　screened　by　the　Spearman　rank　correlation　coefficient,　and　9　key　indicators　are　obtained.　The　Landscape　Sustainability　Development　Index　(LSDI)　was　calculated　using　landscape　metrics　and　principal　component　analysis　(PCA)　to　assess　the　sustainability　of　mangrove　ecosystems.　The　LSDI　derived　from　PCA　scores,　provides　insights　into　the　effectiveness　of　mangrove　conservation　and　restoration　efforts.　From　1990　to　2023,　the　sustainability　capacity　of　the　Luoyangjiang　wetland,　as　indicated　by　LSDI,　has　gradually　increased.　This　trend　suggests　a　positive　trajectory　towards　enhanced　ecological　stability　and　resilience　in　the　region.　These　findings　contribute　to　the　strategic　objectives　of　carbon　peaking　and　carbon　neutrality　in　China,　offering　both　theoretical　insights　and　practical　recommendations　for　ecological　engineering.