基于MODIS遥感反演冠层温度在东北地区的应用  

Monitoring Crop Condition in Northeast China by Using Canopy Temperature Derived from MODIS Remote Sensing Data

作　　者：程涛[1,2] 孙文超[1,2] 徐宗学[1,2] 洪思扬[1,2] 

机构地区：[1]北京师范大学水科学研究院,北京1000875 [2]城市水循环与海绵城市技术北京市重点实验室,北京100875

出　　处：《中国农村水利水电》2017年第8期9-13,18,共6页China Rural Water and Hydropower

基　　金：水利部公益性行业科研专项项目(201401036)

摘　　要：东北三省是我国重要的粮食主产区,东北农业生产关乎国家粮食安全。近些年来,东北连遭干旱侵袭,对农业生产产生了较大的威胁,因此,及时的干旱监测和预警极为重要。利用MODIS卫星遥感数据,基于植被指数温度(VI^TS)特征空间和线性混合模型,选取地表温度LST和归一化植被指数NDVI反演植被冠层温度(Canopy Temperature),并利用手持式红外测温仪在吉林省梨树县地面测量的玉米冠层温度对反演的冠层温度进行验证。结果表明,反演的冠层温度与实测值较为一致,并且在作物生长的中后期效果较好。本研究建立的冠层温度反演算法能够较为准确地反演作物的生长状况,可为东北地区提供及时的农业灌溉技术指导。Northeast China has been one of the most important major grain producers,where agricultural production is closely related to national food security. In recent years,northeast China has undergone successive droughts,posing a tremendous threat to agricultural production. Therefore,drought monitoring and timely pre-warning is extremely important. This study is based on NDVI ~ TSmethod and linear mixed models and uses MODIS remote sensing data as input. The land surface temperature（LST） and the normalized difference vegetation index（NDVI） are selected from MODIS products to retrieve vegetation canopy temperature and then compared with ground observations of maize canopy temperature measured by handheld infrared thermometer in Lishu County,Jilin Province. Research results show that the retrieval canopy temperature accords well with observed data and performs better in the middle and later growing period. The canopy temperature retrieval method used in this study can provide a relatively accurate estimation of crop growing conditions and help in the timely agricultural irrigation in Northeast China.

关 键 词：东北地区 遥感反演 MODIS 冠层温度 

分 类 号：TV93[水利工程—水利水电工程] P407.6[天文地球—大气科学及气象学]