Evidence for a Historic Change Occurring in China.

Xuejun Liu,*,† Peter Vitousek,‡ Yunhua Chang, Weifeng Zhang,† Pamela Matson, and Fusuo Zhang† †College of Resources and Environmental Sciences, China Agricultural University, Beijing 100193, China ‡Department of Biology, Stanford University, Stanford, California, 94016, United States Department of Environmental Science and Engineering, Fudan University, Shanghai 200433, China School of Earth, Energy and Environment, Stanford University, Stanford, California 94305, United States