热带地理2011，Vol.31Issue(3)：272-277,6.
基于AMSR-E被动微波遥感数据的广东省土壤水分变化监测
Monitoring of Soil Moisture Variation Based on AMSR-E Passive Microwave Remote Sensing
摘要
Abstract
As an important parameter in hydrology, meteorology and agriculture research, soil moisture serves as a basis for flood-drought forecasting. The passive microwave remote sensing is the most potent technique to retrieve soil moisture data. In this paper a brief introduction is made to microwave radiative transfer model and formula on vegetation-covered surface. The microwave polarization difference index (MPDI) can reflect soil moisture variation when the influences are similar to those from surface roughness, vegetation canopy and atmosphere etc. By the microwave radiation brightness temperature from the advanced microwave scanning radiometer for earth observing system (AMSR-E), the monthly average values of microwave polarization difference index (MPDI )are calculated, and the values of normalized month anomaly index( AMPDI )of October at 10.7GHz channel from 2004 to 2009 in Guangdong province are analyzed statistically. On that basis a map of soil moisture variation is drawn, and comparison between the data of soil moisture and precipitation in the studied region is made. The study shows that AMPDI can monitor anomalous variability of soil moisture, and it provides an effective and simple approach to monitoring the grade of drought and flood关键词
被动微波/土壤水分/AMSR-E/MPDIKey words
passive microwave/ soil moisture/ AMSR-E/ MPDI分类
信息技术与安全科学引用本文复制引用
刘万侠,刘旭拢,翁丰惠,周常萍..基于AMSR-E被动微波遥感数据的广东省土壤水分变化监测[J].热带地理,2011,31(3):272-277,6.基金项目
广东省科学院青年科学研究基金(qnjjsq200808) （qnjjsq200808）
广东省自然科学基金(05000646) （05000646）
