干旱对灌溉和雨养农田生态系统生产力的影响对比分析
刘莹,朱秀芳,徐昆,陈令仪,郭锐

Comparative Analysis of the Impact of Drought on the Crop Productivity of Irrigated and Rain-fed Farmland Ecosystems
Ying Liu,Xiufang Zhu,Kun Xu,Lingyi Chen,Rui Guo
图3 区域尺度上2000~2014年北方旱区农田生态系统干旱、EVI和GPP变化趋势分析图
Fig.3 The trends of drought, EVI and GPP in farmland ecosystems in the DNC from 2000 to 2014 at a regional scale