Chinese Journal of Agrometeorology ›› 2014, Vol. 35 ›› Issue (06): 675-681.doi: 10.3969/j.issn.1000-6362.2014.06.011

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Comparison of Remote Sensing Based Soil Moisture Indices in Hebei Province

JIANG Ya zhen,ZHANG Yu jie,SUN Chen,YOU Song cai   

  1. 1Institute of Environment and Sustainable Development in Agriculture,Chinese Academy of Agricultural Sciences,Beijing100081,China;2Graduate School of Chinese Academy of Agricultural Sciences,Beijing100081
  • Received:2014-04-10 Online:2014-12-20 Published:2015-05-21

Abstract: Temperature Vegetation Drought Index(TVDI)and Vegetation Supply Water Index(VSWI)in May of 2010 in Hebei province were calculated based on Enhanced Vegetation Index(EVI)which was computed from Terra/MODIS MOD09A1 and LST which was deprived from MOD11A2.Suitability of monitoring soil moisture in Hebei province using TVDI and VSWI was compared and analyzed.The qualitative analysis between the two indices and 8d average precipitation data in the same period showed that TVDI and precipitation data had obvious contrary trend and the trend between VSWI and precipitation data was not obvious.Quantitative correlation analysis showed that TVDI and precipitation data had a significant negative correlation(P<0.05),while which was not significant between VSWI and precipitation data.Therefore,TVDI is more appropriate than VSWI for soil moisture monitoring in the study period in Hebei province.

Key words: Soil moisture, TVDI, VSWI, Precipitation