遥感干旱指数在洛川苹果干旱监测中的适用性分析
张茂,张霞,胡光成,王楠

Applicability Analysis of Remote Sensing based Drought Indices in Drought Monitoring of Apple in Luochuan
Mao Zhang,Xia Zhang,Guangcheng Hu,Nan Wang
表1 2014~2016年洛川县苹果滞后不同时相遥感干旱指数与土壤湿度相关系数
Table 1 Correlation coefficient between remote sensing based drought indices of apple with different time lags and soil moisture in Luochuan from 2014 to 2016
遥感干旱指数2014年2015年2016年
012301230123
NDWI0.69**0.54*0.41**0.310.68**0.58**0.62*0.54**0.740.68**0.71**0.73**
VSWI(NDVI)0.300.58*0.52**0.46**0.72*0.73*0.74*0.75*0.60**0.74**0.74**0.77*
VSWI(EVI)0.50.56*0.590.51**0.71**0.710.83**0.87**0.69*0.71*0.83**0.85**
TVDI(NDVI)-0.14-0.56**-0.39-0.21**-0.18*-0.42**-0.34**-0.4*-0.28-0.48*-0.33*-0.36
TVDI(EVI)-0.27-0.67**-0.55*-0.43*-0.28-0.39**-0.27*-0.33*-0.48*-0.6**-0.56-0.59**