MODIS与ETM数据在甘蔗长势遥感监测中的应用

Application of MODIS and ETM Data in Sugarcane Growth Monitoring

广西是主要糖业生产基地之一,甘蔗的长势和产量作为一种基础信息,对于政府决策、糖业企业经营规模和甘蔗种植户田间管理等方面都具有非常重要的参考价值。本文从遥感监测入手,利用MODIS资料,采用归一化植被指数的方法监测甘蔗长势。同时利用ETM资料的高空间分辨率的优势,采用监督分类方法提取相关的地表特征,排除监测区内非甘蔗用地信息的干扰。ETM和MODIS资料的结合提高了甘蔗长势监测的精度,可为甘蔗估产奠定基础。

Guangxi Autonomous Region is one of the sugarcane （Saccharum officinarum） production bases in China. The information on the growth and yield of Sugarcane provide important references for government policy making, production management of sugar enterprises and field management of sugarcane. Based on the data of MODIS and remote sensing technique, the sugarcane growth was monitored by the method of ND VI. Meanwhile, the ETM data, which has an advantage of high space distinguish rate, was used to pick up the information of sugarcane fields by the method of direct classification from the image of ETM, which will eliminate those interferential information from the monitoring fields and im- prove the precision of sugarcane growth monitoring by remote sensing method greatly. Therefore it had been proved that the monitoring accuracy for sugarcane growth was improved by application of MODIS data combined with ETM data.