Decoupling the Effect of Climate and Land-Use Changes on Carbon Sequestration of Vegetation in Mideast Hunan Province, China

Urbanization and global climate change are two important environmental phenomena in the 21st century. Human activities changes usually increase uncertainties of ecosystem functions structures can greatly affect regional landscape patterns carbon cycle. Consequently, it is critical to understand how various land-use influence dynamics at a scale. In this study, we quantitatively analyzed spatial temporal net primary productivity (NPP) effects factors human disturbance (i.e., changes) on “Chang–Zhu–Tan” (CZT) urban agglomeration region from 2000 2015. The Carnegie–Ames–Stanford Approach (CASA) model was combined with spatially explicit maps, monthly data, MODIS NDVI images simulate CZT area. Based our six different scenarios, also relative roles total production. Our results indicated that annual NPP study area maintained an upward trend by 7.31 gC•m−2•yr−1 between At same time, average 628.99 gC•m−2 We found lower middle north than others. addition, could contribute positive effect production 3.42 T gC. Meanwhile, amounted −1.44 gC period. Temperature precipitation had negative sequestration As forest land constituted over 62.60% use 2015, caused urbanization be ignored Although simultaneously during period 2000–2015, prioritizing protection existing increasing storage assists understanding impact while providing scientific basis for rational effective ecological environment mid-east Hunan Province, China.