The study reveals that the formation of dried soil layer is mainly caused by natural factors due to the reduction of precipitation and gravitational water.
研究表明，土壤干层的形成主要是自然原因造成的，是降水量少决定的重力水带分布深度小引起的。
In order to avoid the occurrence of dried soil layer, it is necessary to select the tree species with slow growth and low water consumption, and the afforesting density should be reduced.
为防止严重的土壤干层发生，选择生长较缓慢、消耗水分少的树种是必要的，并应减小造林树种植株密度。
The research shows that the influx depth of gravity water in soil can indicate the existence of dried soil layer and the degree it developed, which is the key factor to decide the kind of vegetation.
已有的研究表明，土壤中重力水的入渗深度能够指示土壤干层的有无和发育强弱，是决定植被类型的最主要和最关键的因素。
At the same time this paper discussed the relation between water and soil conservation and break-off discharge in the Yellow River, dried soil layer.
同时对黄河断流以及土壤干层与水土保持建设的关系进行了探讨。
In artificial forestland, soil dried layer has been formed because of water deficit.
在人工林地，因水分亏缺形成了严重程度不同的干化层。
Meanwhile the significance of solving problems about dried soil layer is discussed.
同时，研究指出了解决土壤干层问题的意义。
Meanwhile the significance of solving problems about dried soil layer is discussed.
同时，研究指出了解决土壤干层问题的意义。
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