Analysis of the temporal and spatial variations in net primary productivity of vegetation in the grassland region of Inner Mongolia and the factors influencing those changes

• ZHANG Zifan, 
• XIONG Maoqiu, 
• LI Fujie, 
• LIU Xiaohuang, 
• HAO Yuheng, 
• XING Liyuan, 
• WANG Xinhua, 
• LAI Ming, 
• YUAN Pengcheng