基于MODIS数据的成都市水稻遥感估产研究

Research on the Yield Estimation of Rice in Chengdu Based on MODIS Data

以遥感和地理信息系统为主要技术支撑,利用多时相的高光谱分辨率MODIS数据,对成都市2003年水稻进行了估产研究。在利用研究区最佳时相遥感影像提取水稻种植面积的基础上,以多时相的高光谱分辨率遥感数据建立水稻单产模型,并计算出成都市2003年的水稻总产量。研究表明,成都市各行政区当年水稻总产量估算结果的误差为17.45%;利用多时相MODIS数据对农作物进行遥感估产具有一定的可行性,同时通过该研究也为西南地区大范围的农作物遥感估产在方法上提供了一定的借鉴作用。

Based on remote sensing and GIS technology, the 2003＇ rice yield of Chengdu was predicted. The necessary information of rice in Chengdu was obtained and the predicting model for per hectare yield of rice was constructed, using the multi-temporal MODIS data. The rice yield of Chengdu was figured also out, and the errors were indicated to be 17.45%. The result was considered to be satisfying. Thereby, a conclusion could be drawn that multi-temporal MODIS data could be used to estimate the yield of corn in the city of Chengdu feasibly. On the other hand, the result also provides some references to the remote sensing for yield estimation of the whole south-east of China.