【摘 要】
：
封面图片为全球农情遥感速报系统CropWatch生成的全球主要农业生产国2014年7月至10月最佳植被状况指数图(a)与耕地种植状况图(b),反映出作物长势与耕地利用状况的空间分布特征。CropWatch系统由中国科学院遥感与数字地球所创建,该系统以遥感数据为主要数据源,结合有限的地面观测数据,构建了不同时空尺度的农情遥感监测多层次技术体系,可实现全球尺度,洲际主产区、31个主要农业生产国以及9个
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封面图片为全球农情遥感速报系统CropWatch生成的全球主要农业生产国2014年7月至10月最佳植被状况指数图(a)与耕地种植状况图(b),反映出作物长势与耕地利用状况的空间分布特征。CropWatch系统由中国科学院遥感与数字地球所创建,该系统以遥感数据为主要数据源,结合有限的地面观测数据,构建了不同时空尺度的农情遥感监测多层次技术体系,可实现全球尺度,洲际主产区、31个主要农业生产国以及9个大国的省/州的农情监测与产量预测。依托地面实测数据,CropWatch系统可对其指标和方法进行系统验证,
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