不同林地类型土壤水库蓄水特性研究

Properties of Soil Reservoir Storage in Different Forest Land Types

研究不同林地类型土壤水库的蓄水特性,以期加深对森林土壤水库削洪补枯机理的认识。以裸露地为对照,木荷林地、杉木林地和封山育林地为研究对象,对它们土壤水库的蓄水功能及其动态变化进行研究。结果表明:木荷林地、杉木林地、封山育林地和对照土壤水库的年均蓄水量分别为381.1,368.7,336.9和243.6mm,分别占各自总库容的75.62%,78.18%,74.62%和59.57%。不同季节中不同林地类型土壤水库的月均蓄水量大小顺序均为多雨期>雨量中等期>少雨期,木荷林地、杉木林地和封山育林地土壤水库多雨期的月均蓄水量分别比对照的多124.8,121.9和85.0mm,少雨期的月均蓄水量也分别比对照的多141.0,129.2和91.0mm。

<Abstrcat> Taking bare land as control, three forest lands, viz. Schima superba, Cunninghamia lanceolata, enclosing & tending forest land are studied. According to the studies on storage function and dynamic change of their soil reservoirs, the results show that mean annual water storage of soil reservoir in Schima superba, Cunninghamia lanceolata, enclosing & tending forest and the control was 381.1 mm, 368.7 mm, 336.9 mm and 243.6 mm, accounting for 75.62%, 78.18%, 74.62% and 59.57% of total capacity respectively. Average monthly water storage of different types of soil reservoirs in different seasons was rainy season >rain middle season >dry season; Mean monthly water storage of Schima superba, Cunninghamia lanceolata, enclosing & tending forest was separately 124.8 mm, 121.9 mm and 85.0 mm greater than that in the control in rainy season, and in dry season it was 141.0 mm, 129.2 mm, 91.0 mm greater respectively.