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沙地水分定位动态监测是沙区农业、林业生产中的一项重要措施。一般测定沙地含水量多采用烘干法 ,由于沙地干燥 ,取样十分困难 ,加之测点变动 ,沙地水分空间变异性带来的测定误差 ,不能满足野外连续测定沙地水分动态变化的要求。在土壤水分测定中利用电阻法测定土壤含水量 ,是目前国内外应用比较多的方法之一 ,而应用在沙漠研究中却不多见。在塔克拉玛干沙漠腹地应用电阻法测定沙地水分动态 ,可以对沙地水分连续测定 ,特别是长期水分动态监测 ,电阻法测定仍是一种简便易行的新方法
Dynamic monitoring of water location in sandland is an important measure in the agriculture and forestry production in sandy area. The general determination of sandy water content using drying method, due to dry sand, sampling is very difficult, combined with changes in measuring point, the spatial variability of sand caused by the measurement error can not meet the field continuous determination of the dynamic changes of sand moisture requirements . Determination of soil water content by resistance method in soil moisture measurement is one of the most widely used methods at home and abroad, but its application in desert research is rare. Determining the moisture content of sandy land in the hinterland of Taklimakan Desert can be used to measure the moisture in sandy land continuously, especially the long-term moisture dynamic monitoring and the resistance method is still a new and simple method