4种干旱监测方法在云南省的对比应用  

COMPARISON AND APPLICATION OF FOUR DROUGHT MONITORING METHODS IN YUNNAN PROVINCE

作　　者：赵敏[1] 胡文英[1] 李艳芳[1] 

机构地区：[1]云南师范大学旅游与地理科学学院,云南昆明650500

出　　处：《云南地理环境研究》2016年第1期14-21,共8页Yunnan Geographic Environment Research

基　　金：基于MODIS数据的云南省干旱遥感动态研究(01300205020503071)

摘　　要：面对多种多样的干旱监测方法,如何进行选取是目前遥感干旱应用所面临的主要难题。基于MODIS数据和云南省96个气象站2010年2月与2012年2月的气象资料,利用条件植被指数(VCI)、温度植被指数(TVDI)、云参数法以及标准降水指数(SPI)方法监测云南省干旱,并将4种方法监测结果与云南省干旱监测系统监测结果进行对比分析其在云南省的适用状况。结果表明:在该区,VCI监测干旱程度偏轻且干旱程度空间分布连续性差。云参数方法监测结果与实际干旱分布存在差异。由于没有考虑到前期降水等因素,SPI对该区干旱监测还有待进一步的探索。4种方法中,TVDI法既考虑了温度因素又考虑了地表植被状态,监测结果与实际干旱状况吻合度最好。There is a variety of drought monitoring methods,witch one should be chosen is the main problem. VCI（ Vegetation Condition Index） 、TVDI（ Temperature- Vegetation Dryness Index） 、SPI（ Standardized Precipitation Index） and cloud parameters——the four methods is used to monitor drought in Yunnan Province based on meteorological data of 94 M eteorological Point and M ODIS data in the February of 2010 and2012. Comparing the result with the drought severity that monitored by Drought M onitoring System in Yunnan Province. The result showed that it was lighter than others by VCI method and having poor spatial continuity of drought. It well told the state of drought conditions in Yunnan Province that the cloud parameters did. While it can＇t well monitoring the spatial distribution of the drought. Because of the precipitation before monitoring days and other factors was not considered that there was big difference between monitor result and the real. M onitoring drought by TVDI consists of temperature and different types of the earth＇s surface vegetation,this monitor result achieved high conformity with real drought status.

关 键 词：云参数法 云南省 干旱 监测方法 

分 类 号：TP79[自动化与计算机技术—检测技术与自动化装置]