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在黄土高原半干旱地区,降水是限制植被生长的主要限制因子。鱼鳞坑作为一种集水措施在人工造林中被普及推广。为研究鱼鳞坑雨季的集水功能,对样地鱼鳞坑内部、上部及侧面坡面典型部位的土壤水分进行了连续性监测,结果显示:7—8月,鱼鳞坑内的平均土壤含水量维持在低于鱼鳞坑外部坡面的水平;鱼鳞坑内20～40cm土层是土壤水分的主要利用层,鱼鳞坑的集雨效果表现在40～60cm土层上;单个鱼鳞坑的集雨效果存在差异性,这种差异性主要表现在有径流产生的降雨期。单个鱼鳞坑的集雨效果受鱼鳞坑的布置模式、施工工艺等因素的影响。
In semi-arid areas of the Loess Plateau, precipitation is the main limiting factor that limits vegetation growth. Fish-scale pit as a catchment measures in afforestation has been popularized. In order to study the water catchment function during the wet season of fish-scale pit, the continuous monitoring of soil moisture in the typical part of the inner, upper and side slope of the fish-scale pit was carried out. The results showed that the average soil water content in the scale pit was maintained at Which is lower than the level of the outer slope of the scale pit. The 20-40 cm soil layer in the fish scale pit is the main utilization layer of soil moisture, and the catchment effect of the fish scale pit is on the 40-60 cm soil layer. , This difference is mainly manifested in the precipitation period of rainfall. The rain-collecting effect of a single fish-scale pit is affected by factors such as the layout mode of the fish-scale pit and the construction technology.