Potential responses of vegetation to atmospheric aerosols in arid and semi-arid regions of Asia

Changes in atmospheric aerosols have profound effects on ecosystem productivity, vegetation growth and activity by directly indirectly influencing climate environment conditions. However, few studies focused the of vulnerable arid semi-arid regions, which are also source areas aerosols. Using datasets aerosol optical depth (AOD), normalized difference index (NDVI) multiple climatic variables including photosynthetically active radiation (PAR), surface solar (SSR), air temperature (TEM) total precipitation (PRE), we analyzed potential responses to their associated factors regions Asia from 2005 2015. Our results suggested that with decreasing growing-season NDVI were mainly observed relatively sparse coverage, while AOD tended increase as decreased these regions. Upon further analysis, found might exert a negative influence reducing SSR, PAR TEM, well suppressing PRE most Asia. Moreover, varied among different growing stages. At early stage, higher concentration was accompanied suppressed enhancing cooling SSR PAR. middle alter microphysical properties clouds PRE, thereby restricting growth. late exerted significantly positive influences increasing TEM high anthropogenic Overall, at stages, could changing PAR, This study not only clarifies impacts areas, but explains roles climate.