To mitigate the impacts of land degradation and achieve sus-tainable development,several large-scale conservation programs including the Key Shelterbelt Construction Program,Natural Forest Conservation Program,and the Grain to Green Program have been formulated into action in China since the late 1970s and 1998,respectively[1].Recent satellite observations from 2000 to 2017 revealed a strikingly prominent greening in China due to these efforts[2].Unraveling the influence of the greening on climate has become a new challenge in climate change research and ade-quate assessing of its environmental impact is imperative.