缙云山几种林分水源涵养和保土功能评价  

Evaluation of Soil and Water Conservation Capacity of Several Forest in Jinyun Mountain

作　　者：陈引珍[1] 程金花[1] 张洪江[1] 李猛[1] 

机构地区：[1]北京林业大学水土保持学院,水土保持与荒漠化防治教育部重点实验室,北京100083

出　　处：《水土保持学报》2009年第2期66-70,共5页Journal of Soil and Water Conservation

基　　金：国家自然科学基金项目(40771042);国家林业科技支撑项目(2006BAD03A1304);国家林业局林业科技推广计划项目(2007-100);国家林业局“948”项目(2006-4-26);瑞典国际自然科学基金项目(IFS)(D/3492-2)

摘　　要：在对缙云山几种天然林林分林冠层、枯枝落叶层和土壤层拦蓄降水和保土功能指标定性评价的基础上,采用坐标综合评定法对重庆缙云山几种天然林林分水源涵养和保土功能进行了综合评价。结果表明:不同林分水源涵养和保土综合能力由大到小顺序为:常绿阔叶灌丛、针阔混交林、常绿阔叶林、楠竹林。常绿阔叶灌丛水源涵养和保土综合能力评价值(0.0653)比其它林分少两个数量级,说明其水源涵养和保土功能明显优于其它林分类型。由分析可得,树种组成丰富、枯落物储量多的灌木林水源涵养和保土能力最强,针阔混交林的水源涵养和保土能力要优于单一的阔叶林,而楠竹林最差。Based on the evaluation on different layers of several natural forests, including canopy, litters and soil layer, the soil and water conservation capacity was comprehensively evaluated by the method of comprehensively coordinate. Results showed that the sequence of different forests from high to low is that evergreen broadleaf shrub forest, mixed forest of conifer and broadleaf, evergreen broadleaf forest, and Phyllostachys pubescence forest. The evaluation value （0. 065 3） of evergreen broadleaf shrub forest is much smaller than other forests, which shows that its capacity of soil and water conservation is much stronger than other forests. Results also showed that the shrub forest which has more plants and more litter has the strongest capacity of conserving soil and water. The capacity of soil and water conservation of mixed forest of conifer and broadleaf is better than forest with single broadleaf trees, and Phyllostachys pubescence forest is the worst.

关 键 词：缙云山 水源涵养 保土功能 

分 类 号：S157.1[农业科学—土壤学] S157.2[农业科学—农业基础科学]