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作物种植面积对调整农业结构、制定区域粮食安全政策有着十分重要的意义。本文以山东省嘉祥县为研究区,利用3景不同时相的HJ卫星CCD遥感数据,结合野外调查样本,通过分析研究区主要秋收作物(玉米、棉花和水稻)在不同生育期的光谱特征和归一化植被指数(NDVI)的特点,对分类影像进行系列阈值分割、掩膜处理,最后利用决策树算法成功提取了山东省嘉祥县的玉米、棉花和水稻的种植面积,总体精度分别达到93.31%、89.41%、95.82%。 更多还原

【Abstract】 Crop planting area is significant to the agricultural structure adjustment and regional food balance policy.Based on field investigation and spectral property and analysisofcrop NDVI during growing period in HJ-1-CCD images,different threshold configurations are set to build decision trees.Planting areas of rice,cotton and corn are precisely extracted utilizing multi-temporal HJ-1-CCD images in Jiaxiang county,Shandong province.The statistical planting area data from the government are prepared ... 更多还原