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土壤是水分循环系统的重要组成部分,其保水持水性对作物生长十分重要,并在水土流失、山体滑坡和洪水的防护方面具有重要的作用。本文选取土壤饱和导水率、有效田间持水量、空气容量等因素作为评价指标,对土壤的水分调节功能进行评价。以郑州市郊区为研究对象,开展实例研究。评价结果表明,研究区域的土壤水平衡调节功能在质量等级方面整体较高,而在数量等级方面较低;整体来说,西南山区和西北地区水平衡调节功能相对较高,而东南部相对较低。在水平衡调节功能等级较低的地区进行土地利用时,应注意对作物水分的补给以及加强相应的防洪措施。
Soil is an important part of the water cycle system. Its water holding capacity is very important for crop growth and plays an important role in soil erosion, landslide and flood protection. In this paper, factors such as saturated hydraulic conductivity, available water holding capacity and air capacity were selected as evaluation indexes to evaluate soil moisture regulation. Taking the outskirts of Zhengzhou as the research object, a case study is carried out. The evaluation results show that the adjustment function of soil water balance in the study area is generally higher in quality level and lower in quantity level; on the whole, the water balance regulation function is relatively higher in the southwest mountainous area and the northwest area, while the southeast relative area is relatively low. When land use is carried out in areas with lower water balance adjustment functions, attention should be paid to the supply of crop moisture and corresponding flood control measures.