Information on land use and soil erosion was extracted from TM remotely sensed images.
应用TM遥感影像，提取土地利用和土壤侵蚀的相关信息。
GIS based soil information system (SIS) is very important for assessment of the capacity of land production, the status, rates of soil degradation and global change studies.
地理信息系统(GIS)支持下的土壤信息系统(SIS)在评价土地生产能力、土地退化的现状、速率和风险以及全球变化研究中具有重要意义。
GIS based soil information system (SIS) is very important for assessment of the capacity of land production, the status, rates of soil degradation and global change studies.
地理信息系统(GIS)支持下的土壤信息系统(SIS)在评价土地生产能力、土地退化的现状、速率和风险以及全球变化研究中具有重要意义。
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