Contributions of vegetation heterogeneity within tower footprint to CO2 flux estimations through graph neural network modeling - Huimin Zou; Jiquan Chen; Xianglan Li; Jianhua Zhu; Xiaojian Liu; Zhen Tian; Zhulin Chen; Jie Dai; Zhiyong Xue; G. Philip Robertson (Remote Sensing of Environment, 2025)