开化生态公益林主要森林类型水土保持功能综合评价

Comprehensive Evaluation on Soil and Water Conservation Function of Main Forest Types of Ecological Protection Forest in Kaihua County

对浙江省开化县生态公益林中主要森林类型的水土保持功能进行评价。选取林冠截留率、灌草层盖度、枯落物覆盖度、枯落物厚度、枯落物最大持水量、土壤稳渗透速率、土壤非毛管空隙度、土壤可蚀性k值为评价指标,构建森林水土保持功能综合评价方法。结合实测数据,对研究区各森林类型水土保持功能进行评价。结果表明:水土保持功能为针阔混交林>麻栎林>毛竹林>马尾松林>杉木林;针阔混交林的水土保持功能属较强等级,毛竹林、麻栎林、杉木林、马尾松林为中等。

Soil and water conservation function of main forest types of ecological protection forest in Kaihua county of Zhejiang province were evaluated. Rate of canopy interception,shrub-grass layer coverage,litter coverage,litter thickness,maximal water holding value of litter layer,soil steady infiltration,soil non capillary porosity and soil erodibility k were selected as evaluation index,and comprehensive evaluation method of water conservation function was used. The results show that the desending order of soil and water conservation function was coniferous-broadleaved mixed forest〉Quercus acutissima〉Phyllostachys heterocycla〉Pinus massoniana〉Cunninghamia lanceolata; the soil and water conservation function of coniferous-broadleaved mixed forest belongs to stronger grade,Phyllostachys heterocycla,Quercus acutissima,Cunninghamia lanceolata,Pinus massoniana were middle.