水源地不同林分水源涵养功能评价  

The evaluation on the soil water conservation function of five types forests in urban water source region

作　　者：陈严武[1] 史正涛[1] 曾建军[1] 林紫红 毛慧玲[1] 

机构地区：[1]云南师范大学旅游与地理科学学院,昆明650500

出　　处：《干旱区资源与环境》2015年第2期67-74,共8页Journal of Arid Land Resources and Environment

基　　金：水利部公益性行业项目(201001058);云南省社会发展项目(05400206040216002)资助

摘　　要：通过野外调查采样和实验室分析,运用基于熵值的水源涵养能力相对优异性量化评价模型对松华坝水源地落叶阔叶林、常绿阔叶林、常绿落叶阔叶混交林、针叶林和落叶阔叶针叶混交林五种森林植被水源涵养能力进行量化分析。结果表明:不同林分枯落物层水源涵养能力得分为常绿阔叶林(0.3175)>常绿落叶阔叶混交林(0.2883)>落叶阔叶林(0.0904)>落叶阔叶针叶混交林(0.0288)>针叶林(0.0039);不同林分土壤层水源涵养能力得分排序为常绿落叶阔叶混交林(0.6067)>落叶阔叶林(0.3634)>落叶阔叶针叶混交林(0.2102)>常绿阔叶林(0.0762)>针叶林(0.0345);不同林分水源涵养功能总得分排序为常绿落叶阔叶混交林(0.8950)>落叶阔叶林(0.4538)>常绿阔叶林(0.3937)>落叶阔叶针叶混交林(0.2390)>针叶林(0.0384),表明多种植阔叶林树种或阔叶针叶混交林更有利于增强水源地水源涵养功能。Combining field survey and indoor analysis,adopting an evaluation model of entropy-based water conversation capacity relative superiority quantitative,this research made a quantitative analysis on Songhuaba reservoir catchment,which involves five types forests,Deciduous Broad-leaved forest（ A1）,evergreen broad-leaved forest（ A2）,evergreen and deciduous broad-leaved mixed forest（ A3）,coniferous forest（ A4） and deciduous broad-leaved and coniferous mixed forest（ A5）. The results indicate that the score sorting of litter water conservation capacity in different types vegetations are evergreen broad-leaved forest（ 0. 3175） evergreen and deciduous broad-leaved mixed forest（ 0. 2883） deciduous broad-leaved forest（ 0. 0904） deciduous broad-leaved and coniferous mixed forest（ 0. 0288） coniferous forest（ 0. 0039）; the score sorting of soil layer water conservation capacity in different types vegetations are evergreen and deciduous broad-leaved mixed forest（ 0. 6067） deciduous broad-leaved forest（ 0. 3634） deciduous broad-leaved and coniferous mixed forest（ 0. 2102） evergreen broad-leaved forest（ 0. 0762） coniferous forest（ 0. 0345）; the total score sorting of water conservation capacity in different types vegetations are evergreen and deciduous broad-leaved mixed forest（ 0. 8950） deciduous broad-leaved（ 0. 4538） evergreen broad-leaved forest（ 0. 3937） deciduous broad-leaved and coniferous mixed forest（ 0. 2390） coniferous forest（ 0. 0384）. Studies suggest that in the future water source protection,more broad-leaved tree species and more broad-leaf coniferous mixed forest should be planted,which is more beneficial to water source conservation and to forest vegetations supply continuous water to reservoir.

关 键 词：水源涵养功能 水源地 森林植被 相对优异性评价模型 

分 类 号：S727.21[农业科学—林木遗传育种]