Responses of ecosystem productivity to natural and anthropogenic environmental changes in the conterminous U.S. from 1971 to 2015

Jinxun Liu, USGS Western Geographic Science Center, Menlo Park, CA, United States, Benjamin M Sleeter, U.S. Geological Survey, Western Geographic Science Center, Menlo Park, CA, United States, Zhiliang Zhu, U.S. Geological Survey, Reston, VA, United States and Todd J Hawbaker, US Geological Survey, Geosciences and Environmental Change Science Center, Lakewood, CO, United States