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提出利用 GIS与 TM数据集成技术估算中国南方丘陵山地早稻种植面积的方法 .该方法首先利用 ARC/INFO对土地利用现状图进行数字化 ,建立拓朴关系后将其转化为栅格 ,然后进行投影变换 ,使土地利用现状图、行政图、TM数据具有相同的坐标 ,最后利用土地现状图 ,提取水田分布图 ,对水田分布图进行分类估算早稻种植面积 .不同方法比较结果表明 :非监督分类法不能用于提取丘陵山区的水稻种植面积 ;只用 TM资料估算龙游县早稻面积 ,与统计数据相比 ,平行六面体分类法、最大似然分类法分别达到 82 .83 %和 59.95% ;而用 GIS与 TM数据资料集成技术对水田分布图进行分类估算早稻面积 ,平行六面体分类法、最大似然分类法的估算精度分别达到 93 .98%和 60 .65% ,所以利用平行六面体分类法对南方丘陵山地早稻种植面积估算是可行的 .
This paper proposes a method to estimate the planting area of early rice in hilly mountainous area of southern China by using GIS and TM data integration technology.Firstly, ARC / INFO is used to digitize the land use status map, then the topological relations are established and transformed into grids, , So that the land use status map, the administrative map and the TM data have the same coordinates, and finally extract the paddy field distribution map and the paddy field distribution chart to estimate the planting area of the paddy rice. The comparison of different methods shows that the unsupervised classification method can not Which was used to extract the rice planting area in hilly area. According to the TM data, the area of early rice in Longyou County was estimated. Compared with the statistical data, the maximum likelihood classification method of parallelepiped classification method reached 82.83% and 59.95% And TM data integration technology to classify the paddy field distribution map. The estimation accuracy of early rice area, parallelepiped classification method and maximum likelihood classification method reached 93.98% and 60.65% respectively. Therefore, using the method of parallelepiped classification, Estimated planting area of mountain morning rice is feasible.