%0 Journal Article
%T The Application of TVDI in Drought Monitoring for Winter Wheat in Spring<br>TVDI在冬小麦春季干旱监测中的应用
%A LI Chun-qiang
%A LI Hong-jun
%A <br>李春强
%A 李红军
%J 遥感技术与应用
%D 2008
%I 
%X Droughts hazard occurs frequently in nature and has a great impact on agriculture.Timely monitoring and assessment of drought conditions is critical to mitigate its effects.Using NOAA/AVHRR satellite data,we derived the normalized difference vegetation index (NDVI),soil-adjusted vegetation index (SAVI),land surface temperature (LST) and analyzed the spatial characteristics of vegetation indices and land surface temperature.The temperature vegetation dryness index (TVDI) was used to monitor the winter wheat drought conditions from March to May of 2005 in the middle-south part of Hebei Province.The results showed that the correlation of soil moisture with TVDI based on SAVI was better than that based on NDVI.The analysis of TVDI and soil moisture data from weather stations' measurement demonstrated that a good correlation existed between TVDI and relative humidity of soil at 10cm and 20cm.Therefore,TVDI is a better indicator for operational drought monitoring.
%K Remote sensingzz
%K Winter wheatzz
%K Temperature vegetation dryness indexzz
%K Soil-adjusted vegetation index(SAVI)zz
%K Normalized difference vegetation index(NDVI)zz<br>遥感
%K 冬小麦
%K 温度植被旱情指数
%K 土壤调整植被指数
%K 归一化植被指数
%K 冬小麦
%K 春季
%K 干旱监测
%K 应用
%K Spring
%K Winter
%K Wheat
%K Monitoring
%K Drought
%K 关系
%K 土壤相对湿度
%K 相关性分析
%K 观测资料
%K 土壤水分
%K 气象站
%K 土壤表层
%K 结果
%K 状况
%K 温度植被旱情指数
%K 河北省
%K 研究
%U http://www.alljournals.cn/get_abstract_url.aspx?pcid=5B3AB970F71A803DEACDC0559115BFCF0A068CD97DD29835&cid=8240383F08CE46C8B05036380D75B607&jid=6F56B81324C1B239DA82AE08A4344F0C&aid=EE6E0CE3C962584BAD656002C313301C&yid=67289AFF6305E306&vid=EA389574707BDED3&iid=0B39A22176CE99FB&sid=8575BEDA702C4B7C&eid=31611641D4BB139F&journal_id=1004-0323&journal_name=遥感技术与应用&referenced_num=1&reference_num=14