玉溪东风水库主要森林类型水源涵养功能综合评价

摘要

Yuxi Dongfeng Reservoir is an important water source ,as well as the emphasis of ecological con‐struction and water source protection area .Through the Dongfeng Reservoir basin within the scope of the five main types of water conservation forest function ,the comprehensive evaluation was carried on .Litter maximum moisture rate ,volume ,effective held and soil total porosity and capillary porosity ,soil thickness ,soil maxi‐mum storage capacity were selected as the evaluation index ,the comprehensive evaluation method of forest function of water conservation was constructed .The results showed that 5 kinds of main forest types of water conservation function was not very good .Water conservation function from big to small was chestnut forest , Christmas trees ,oak forest ,mixed forest and Chinese fir forest .The Christmas trees ,oak forest and chestnut forest were better for water conservation function ,Chinese fir forest and mixed forests had poor water conser‐vation functions .%东风水库是玉溪市重要水源地，是生态建设和水源保护的重点区域。为探究该区域森林水源还养功能，选取枯落物最大持水率、蓄积量、有效拦蓄量以及土壤总孔隙度、非毛管孔隙度、土层厚度、土壤最大蓄水量为评价指标，构建森林水源涵养功能的综合评价方法，通过对东风水库流域范围内的5种主要森林类型的水源涵养功能进行综合评价。结果表明：5种主要森林类型的水源涵养功能都不是很好。水源涵养功能由大到小为板栗林、圣诞树林、冈栎林、混交林、杉木林。其中圣诞树林、冈栎林、板栗林的水源涵养功能较好，杉木林、混交林的水源涵养功能较差。