官司河流域7种林分枯落物及土壤层水文效应  

Hydrological Effects of Forest Litters and Soil in Guansi River Watershed

作　　者：唐素贤[1] 郑江坤[1] 蒲晓君 史鹏举[3] 孟晨[3] 宫渊波[3] 

机构地区：[1]四川农业大学,雅安625014 [2]遂宁水土保持试验站 [3]生态林业工程省级重点实验室(四川农业大学)

出　　处：《东北林业大学学报》2014年第10期50-53,共4页Journal of Northeast Forestry University

基　　金：中国博士后科学基金面上资助项目(2012M511938);四川省高等学校水土保持与荒漠化防治重点实验室建设项目;林业公益性行业科研专项(201104109)

摘　　要：为定量评估森林水源涵养能力,结合野外采样和浸水试验对官司河流域7种林分枯落物及土壤层水文效应进行比较。结果表明：林分枯落物蓄积量范围为4.49~13.19 t·hm-2,其中马尾松纯林最大,麻栎纯林最小;各林分枯落物最大持水深和有效拦蓄量均表现为未分解层大于半分解层,且纯竹林最大,分别为2.87 mm和9.77 t·hm-2。枯落物层持水量和吸水速率与浸水时间均显著。各林分0~30 cm土壤总孔隙度变化范围为37.1%~54.3%,竹林和松栎混交林的表层土壤有效持水量最大,分别为256.5、244.5 t·hm-2。纯竹林、松栎混交林持水效果较好,可作为水源涵养林得以推广。By field sampling and soaking experiments,we studied the hydrological effects of forest litter and soil for assessing the water conservation capacity quantitatively. The accumulation amount of litter layer were in the range of 4.49-13.19 t /hm2,that of the Pinus massoniana forest and Quercus acutissima forest were the maximum and the least. Water holding depth and effective interception amount of Bambusoideae forest litter were 2.87 mm and 9.77 t /hm2,respectively. Relationship between water holding capacity,absorption rate and soaking time were were significant. The soil porosity in 0-30 cm varied from 37.1% to 54.3%. Soil effective water holding capacity of Bambusoideae forest and Pinus-Quercus mixed forest were256.5 t /hm2 and 244.5 t /hm2,respectively. Therefore,Bambusoideae forest and Pinus-Quercus mixed forest,as water conservation forest,might be cultivated widely.

关 键 词：吸水速率 有效拦蓄量 土壤有效持水量 川中丘陵区 

分 类 号：S715.7[农业科学—林学]