J4 ›› 2008, Vol. 25 ›› Issue (1): 44-47.

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Monitoring Soil Humidity by Using EOS/MODIS VSWI Product in Qingyang

LIANG Yun1ZHANG Feng 2,HAN Tao1   

  1. 1.Institute ofArid Meteorology,CMA,Key Laboratory ofArid Climate Change and Reducing Disaster of Gansu Province,lanzhou 730020,China;2.Qingyang Meteorological Bureau ofC,ansu Province,Qingyang 745000,China
  • Received:2005-11-24 Revised:2006-11-03 Online:2007-03-31 Published:2007-03-31

利用EOS/MODIS植被供水指数监测庆阳地区的土壤湿度

梁芸1张峰2韩涛1   

  1. 1.中国气象局兰州干旱气象研究所,甘肃省干旱气候变化与减灾重点实验室,甘肃兰州730020;2.甘肃省庆阳市气象局,甘肃庆阳745000
  • 作者简介:梁芸(1975一),女,宁夏中卫人,助理工程师,主要从事遥感应用服务工作
  • 基金资助:

    科技部科研院所社会公益研究专题,中国干旱气象灾害监测预警方法研究(2004DIB5JI92—03)资助

Abstract:

Based on the MODIS data and observed soil humidity in Qingyang region,the linearity relation has been found between VSWI and soil humidity through statistic regression analysis.The soil humidity provided by MODIS VSW1 was validated by the actual soil humidity through dynamic monitoring in 2005 in Qingyang region,thus it is feasible to monitor soil humidity by VSWI product.

Key words: EOS/MODIS, VSWI, soil humidity

摘要:

利用MODIS资料和庆阳市土壤湿度资料,拟合出了植被供水指数(VSWI)与土壤湿度的关系式,回归分析表明:MODIS植被供水指数与地面湿度之间有较好的线性关系,通过对2005年庆阳地区春早的动态监测发现,用此方法监测的土壤湿度与实际测墒值基本吻合。因此,认为利用MODIS植被供水指数监测庆阳地区的土壤湿度是可行的。

关键词: EOS/MODIS, 植被供水指数, 土壤湿度

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