基于GIS的水稻遥感估产模型研究

以NOAA/AVHRR资料为主,利用GIS技术提取水稻可能种植区域,在此基础上计算各区和各县的比值植被指数和规一化植被指数,提出的水稻遥感估产比值模型和回归模型,预报浙江省的水稻总产,1998年的拟合精度和1999年的预报精度都达到95%以上.

The Rice Production Forecasting Models Using NOAA/AVHRR Data Based on GIS

Remote sensing data has been widely used to forecast rice production.The ratio models and regression models of rice production forecasting were established using NOAA/AVHRR data in this paper.To establish these models , the rice potential planting area was extracted using geographic information system technique from digital landuse map. Then the normalized vegetation index and ratio vegetation index was calculated for different regions and counties using NOAA/AVHRR data.The method are used to estimate the early and late rice production in Zhejiang province of China in 1998 and 1999.The results are acceptable.It warranted that the extracted information form the rice potential planting area is belonging to the rice and not to any other vegetation. Since the GIS database is available, the method is easily applicable to any new NOAA/AVHRR images and guarantees the avoidance of errors.