密云水库不同林地配置下地表水水质状况分析  

Analysis on Surface Water Quality in Different Woodland Configuration in Miyun Reservior

作　　者：王俭成[1] 杨建英[1] 白麟[1] 

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

出　　处：《水土保持研究》2012年第4期247-251,共5页Research of Soil and Water Conservation

基　　金：林业生态建设关键技术研究与示范专项项目"都市重要水源区水源涵养林构建技术试验示范"(2006BAD03A18);全国林业公益性项目"四川地震灾区灾后植被恢复及可持续发展关键技术研究与示范"(201104109)

摘　　要：密云水库是北京市最重要的饮用水水源地,它为北京提供了近70%的生活用水,因此密云水库的水质保护成为了当前迫切需要解决的问题。为此,在密云县太师屯镇建立10个以不同造林模式配置的水源涵养林试验区,并构建径流小区。通过检测各径流小区地表水水质情况,进而找出发挥水文效益最佳的造林模式。运用综合指数法、模糊数学法和灰色关联法对数据进行分析后,得出:不同造林模式对地表水水质的影响很大,2号试验地的油松和黄栌混交林改善水质效果最佳,达到了国家Ⅰ类水标准,其他试验地的改善水质效果不佳,均差于2号试验地。由此可见,油松混交黄栌的造林模式为密云水源林的最佳造林模式,且该混交林树种的成活率均在90%以上,建议进行推广栽植。Miyun Reservoir is the most important potable water resources of Beijing,which has supplied nearly seventy percent of domestic water for Beijing.So the water quality protection of Miyun Reservoir has become an urgent problem to be solved at present.Therefore,we built water conservation forest experimental site in Taishitun Town of Miyun Reservoir,which was divided into ten parts,and each part was configured in different afforestation models.Then runoff plots were constructed.In order to find out the best afforestation mode of hydrologic benefit,the surface water quality condition of each runoff plot was tested,and the experimental data was analyzed by using synthetic index method,fuzzy mathematics method and gray correlation method.The results showed that different afforestation models indeed had different effects on surface water quality.We thought that the experimental site of NO.2 had the best effect on water quality which was planted with Pinus tabulaeformis and Cotinus coggygria.And its result had achieved the national gradeⅠ.However the other experimental sites had the worse effect than experimental site of NO.2.All the above,we can see that Pinus tabulaeformis mixed Cotinus coggygria was the best afforestation model.And the two species survival rates were more than ninety percent,and were advised for demonstration and extension.

关 键 词：水源涵养林 水质 造林模式 密云水库 

分 类 号：X832[环境科学与工程—环境工程]