Assessing long term impact of regional climate and human activities on vegetation greenness dynamics in Sundarbans

作者：Muhammad Sadiq Khan, Ayesha Akter, Ismail Khan, Luis Carlos Ramos Aguila, Lina Akter, Mengmeng Yang, Li Xu, Yuelin Li · 发表于：Ecological Informatics · 年份：2025 · DOI：10.1016/j.ecoinf.2024.102984 · 被引用次数：10 · 研究领域：Coastal wetland ecosystem dynamics、Land Use and Ecosystem Services、Conservation, Biodiversity, and Resource Management

Global climate change and human activities significantly influence mangrove greenness dynamics. Assessing the greenness trends in key regions of the Sundarbans in relation to regional climate factors and understanding the impacts of human activities on the mangrove landscape over recent decades are critical for effective ecosystem management such as landscape and land-use planning, which could eventually preserve the functionality of this ecosystems. The Sundarbans, located in the delta region spanning coastal areas of southern Bangladesh and eastern India, serves as a key study area. We used long-term MODIS-NDVI data (2000−2020) alongside major climatic factors to analyze greenness trends, while also utilizing Landsat data (1989–2020) to assess human-induced disturbances in the Sundarbans landscape through standard land cover monitoring techniques. The results revealed a significant annual increase in greenness (0.0021/year, p = 0.01 ), with a more pronounced improvement in the wet season (0.0026/year, p = 0.001 ) compared to the dry season (0.0016/year, p = 0.05 ). Climatic factors, including annual mean precipitation and air temperature, were strongly correlated with greenness, influencing 76 % and 78 % of the pixels, respectively, with increased rainfall observed in dense mangrove areas. During the wet season, greenness expanded, showing significant correlations with precipitation (78 %) and air temperature (81 %) across most regions, except in the central Sundarbans. In ...