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采用TRIME管状土壤含水率测试仪定位测定,对鹫峰国家森林公园典型林地土壤水分的垂直变化、季节性变化以及土壤水分消退规律进行研究。结果表明:1)各林地土壤水分垂直变化总体趋势基本上一致,先增加再近稳定后缓慢减少,各林地土壤含水率大小顺序为:栓皮栎>刺槐>油松>侧柏,土壤水分大致分为:表层速变层、水分利用层、水分稳定调节层。2)4块林地土壤含水率变异系数平均值随着深度的增加而降低,10cm处的变异系数最大,这可能与降水的入渗与树木的吸收两种作用有关。3)各林地土壤水分季节性变化明显,大体上在7月～9月份较高,6月份含水率较低。整个生长季土壤平均含水率差异不是很大。4)在8月3日较大规模降水后,4种林分的土壤水分消退都体现出了蒸渗型的特征。
The vertical and seasonal changes of soil moisture and soil moisture in the typical forestland of Jiufeng National Forest Park were studied using the TRIME tubular soil moisture content tester. The results showed as follows: 1) The vertical trend of soil moisture in each forest was basically the same, and then increased first and then decreased slowly. The order of soil moisture was as follows: Quercus variabilis> Robinia pseudoacacia> Pinus tabulaeformis> Arborvitae, soil moisture As: rapid surface layer, water use layer, moisture regulation layer. 2) The mean value of coefficient of variation of soil water content in four forestlands decreased with depth, and the coefficient of variation at 10cm was the largest, which may be related to the infiltration of precipitation and the absorption of trees. 3) The seasonal variation of soil moisture in each forest is obvious, generally higher from July to September and lower in June. The average soil water content throughout the growing season is not very different. 4) After the large-scale precipitation on August 3, the soil moisture of the four stands showed the characteristics of steaming type.