Impacts of climate change and human activities on different degraded grassland based on NDVI.

ABSTRACT: Grassland degradation has emerged as a serious socio-economic and ecological problem, endangering both long-term usage and the regional biogeochemical cycle. Climate change and human activities are the two leading factors leading to grassland degradation. However, it is unclear what the degradation level caused by these two factors is. Using the normalized difference vegetation index (NDVI) and coefficient of variation of NDVI (CV_NDVI), the spatial distribution features of grassland degradation or restoration were analyzed in Qilian County in the northeast of the Qinghai-Tibet Plateau. The dominant climate variables affecting NDVI variation were selected through the combination of random forest model and stepwise regression method to improve the residual trend analysis, and on t

SUBMITTER: Hou Q 

PROVIDER: S-EPMC9508234 | biostudies-literature | 2022 Sep

REPOSITORIES: biostudies-literature