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基于通径分析的陕北黄土坡面径流产沙影响因素

艾宁 魏天兴 朱清科 葛根巴图 秦伟 赵兴凯 赵维军 马欢 杨苑君

艾宁, 魏天兴, 朱清科, 葛根巴图, 秦伟, 赵兴凯, 赵维军, 马欢, 杨苑君. 基于通径分析的陕北黄土坡面径流产沙影响因素[J]. 北京林业大学学报, 2015, 37(6): 77-84. doi: 10.13332/j.1000-1522.20140428
引用本文: 艾宁, 魏天兴, 朱清科, 葛根巴图, 秦伟, 赵兴凯, 赵维军, 马欢, 杨苑君. 基于通径分析的陕北黄土坡面径流产沙影响因素[J]. 北京林业大学学报, 2015, 37(6): 77-84. doi: 10.13332/j.1000-1522.20140428
AI Ning, WEI Tian-xing, ZHU Qing-ke, GEGENBATU, QIN Wei, ZHAO Xing-kai, ZHAO Wei-jun, MA Huan, YANG Yuan-jun. Factors affecting slope runoff and sediment yield in northern Shaanxi Province based on path analysis[J]. Journal of Beijing Forestry University, 2015, 37(6): 77-84. doi: 10.13332/j.1000-1522.20140428
Citation: AI Ning, WEI Tian-xing, ZHU Qing-ke, GEGENBATU, QIN Wei, ZHAO Xing-kai, ZHAO Wei-jun, MA Huan, YANG Yuan-jun. Factors affecting slope runoff and sediment yield in northern Shaanxi Province based on path analysis[J]. Journal of Beijing Forestry University, 2015, 37(6): 77-84. doi: 10.13332/j.1000-1522.20140428

基于通径分析的陕北黄土坡面径流产沙影响因素

doi: 10.13332/j.1000-1522.20140428
基金项目: 

林业公益性行业科研专项(201104002-2)。

详细信息
    作者简介:

    艾宁,博士生。主要研究方向:林业生态工程及水土保持。 Email: xiangmub@126.com 地址: 100083 北京市清华东路35号北京林业大学水土保持学院。责任作者: 朱清科,教授,博士生导师。主要研究方向:林业生态工程及复合农林学。 Email: zhuqingke@sohu.com 地址:同上。

    艾宁,博士生。主要研究方向:林业生态工程及水土保持。 Email: xiangmub@126.com 地址: 100083 北京市清华东路35号北京林业大学水土保持学院。责任作者: 朱清科,教授,博士生导师。主要研究方向:林业生态工程及复合农林学。 Email: zhuqingke@sohu.com 地址:同上。

Factors affecting slope runoff and sediment yield in northern Shaanxi Province based on path analysis

  • 摘要: 通过对陕北半干旱黄土区16场有径流产沙发生的次降雨数据进行收集,以径流量和产沙量为因变量,植被类型、植被盖度、坡度、坡向、降雨量、降雨历时、场均雨强、I5、I10、I15、I30、土壤密度、土壤稳渗率作为自变量,在进行逐步回归分析的基础上,对影响径流量及产沙量的主要因素进行通径分析,结果表明:1)植被盖度、降雨量、降雨历时、I30、稳渗率是影响径流量的主要因素,径流量、植被盖度、坡度、降雨量、场均雨强、I15、土壤密度为影响坡面降雨产沙量的主要因素;2)降雨历时、降雨量、I30对径流量起到决定性作用,且对径流量产生影响的直接影响因素排序为降雨历时I30降雨量植被盖度稳渗率,而间接影响排序为降雨量降雨历时稳渗率I30植被盖度,决定系数排序为d降雨量·降雨历时d降雨历时·降雨历时dI30·I30d降雨量·降雨量d植被盖度·植被盖度;3)径流量、降雨量、I15对产沙量起到决定性作用。对产沙量影响因素排序:从直接通径系数来看,径流量I15土壤密度降雨量场均雨强植被盖度坡度;从间接通径系数来看,降雨量场均雨强植被盖度I15土壤密度径流量坡度;从决定系数来看,d径流量·径流量d径流量·降雨量d径流量·I15dI15·I15d土壤密度·土壤密度d降雨量·降雨量。

     

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