同时由于干旱区面积广大，又存在大片沙漠和高山等人迹罕至的地方，因此采用遥感与地理信息系统技术提取相关信息的应用潜力更大。
It is potential to take RS and GIS technology to acquire arid areas information, because arid areas is so vast and it has so many deserts and high-mountain which people rarely come.
通过使用遥感和地理信息系统宏观研究手段审视干旱区土壤盐渍化和改良措施得到一些新认识。
By using remote sensing and GIS together with macroscopic research method, we have gained new knowledge on soil salination of the arid region and strategies for soil improvements.
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