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
表2 不同滞后月份下去趋势干旱指数与植被生产力异常的相关系数
Table 2 The correlation coefficients of Detrended SPEI and vegetation productivity anomaly in each lag month

植被

生产力

滞后月份相关系数(干旱区)相关系数(半干旱区)
灌溉农田雨养农田灌溉农田雨养农田
EVI00.54**0.67**0.69**0.77**
10.62**0.80**0.78**0.82**
20.56**0.72**0.75**0.84**
30.50*0.65**0.62**0.75**
40.420.49*0.45*0.42
50.330.430.45*0.42
60.350.460.300.11
GPP00.75**0.77**0.75**0.79**
10.82**0.88**0.87**0.878**
20.66**0.80**0.82**0.876**
30.55*0.72**0.62**0.77**
40.420.49*0.45*0.46*
50.360.440.54*0.46*
60.320.350.27-0.02