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美国农业部国家农业统计局（NASS，USDA）联合美国宇航局（NASA）和乔治梅森大学（George Mason University）合作开发了一种可使使用者直接获取NASA高分辨率土壤湿度数据的“作物状况和土壤水分分析工具”（Crop CASMA）。
USDA Releases New Data on Soil Erosion and Development of Private Lands
New Data Soil Erosion Private Lands
2010/4/29
Agriculture Deputy Secretary Kathleen Merrigan today announced that soil erosion on cropland declined by more than 40 percent during the past 25 years, while more than one-third of all development of ...