Hangzhou Drought Situation Real-time Automatic And Remote Sensing Monitoring Method Research

Hangzhou drought is a common natural disasters,from 1959 to 1995 in Hangzhou meteorological data analysis,Hangzhou drought(all types) Year of the percentage of 37%(14 / 37).Drought Monitoring can not be separated from the monitoring of soil moisture,the domestic agricultural,meteorological departments to conventional method of drying of soil moisture by 70, although simple,the equipment Yaoqiubugao,but time-consuming,laborious,sampling hole will be cut off plants The root system and affect the movement of soil moisture,deep sampling difficulties,fixed-point measurements inevitably brought about by the transposition sampling error,in most cases can not be long-term fixed-point monitoring.This is the first in Zhejiang Province in the use of rapid,accurate,continuous in-situ determination and without radiation at the Domain Reflectometry(TDR) in Hangzhou,the whole area of soil moisture building 14 automatic monitoring stations set up in Hangzhou drought automatic moisture monitoring network,and The city's soil moisture wireless transmission, real-time monitoring,and business operation.At the same time,drought monitoring of remote sensing in Hangzhou on the algorithm,EOS-MODIS use of remote sensing instruments on the macro-Hangzhou drought,dynamic monitoring.NASA provided the use of Hangzhou on July 28, 2006 eight months on the 13th of MODIS surface temperature and vegetation index products, using temperature dry vegetation index(Temperature-Vegetation Dryness Index) method of Hangzhou for the period of soil moisture conditions The inversion of the preliminary results show that:the inversion method used TVDI Hangzhou soil moisture,the result basically consistent with the actual situation and to meet the practical needs of business.Achieve in a short period of time more precise understanding of the drought throughout the region in the development of timely understanding of the drought in the region,of information,provided by the Government of Hangzhou and drought monitoring and artificial rainfall weather bulletin weekly services such as the decision-making material.