An Analysis of the Spatiotemporal Evolution, Key Control Features, and Driving Mechanisms of Carbon Source/Sink in the Continental Ecosystem of China's Shandong Province from 2001 to 2020. - Xiaolong Xu; Fang Han; Junxin Zhao; Youheng Li; Ziqiang Lei; Shan Zhang; Hui Han (ISPRS Int. J. Geo Inf., 2025)