| 贡嘎山暗针叶林生态系统溶质优先运移分析 |
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| 引用本文： | 牛健植,余新晓,张志强.贡嘎山暗针叶林生态系统溶质优先运移分析[J].北京林业大学学报,2009,31(5):48-53. |
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| 作者姓名： | 牛健植 余新晓 张志强 |
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| 作者单位： | 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 |
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| 基金项目： | 高等学校博士学科点专项科研基金资助项目(20060022002);;国家自然科学基金项目(30471379) |
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| 摘 要： | 以长江上游贡嘎山暗针叶林生态系统为研究对象，利用自制土柱装置，以KNO3和KBr作为示踪试剂，采用集中输入（脉冲输入）和稳定均匀输入（阶跃输入）两种基本类型，通过淋洗液和出流液的浓度和体积变化获得穿透曲线对研究区域优先流及溶质优先迁移进行研究。结果表明:长江上游贡嘎山暗针叶林生态系统是优先流及优先迁移的典型区域，其优先流运移过程可以分成5个区域，土壤优先流过程引起溶质的快速大量迁移，导致土壤深层和地下水中溶质浓度快速提高，增加了深层土壤污染的程度。
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| 关 键 词： | 贡嘎山 暗针叶林生态系统 优先流 优先迁移 溶质运移 穿透曲线 水质 |
| 收稿时间： | 1900-01-01 |
Solute preferential transport analysis of dark coniferous forest ecosystem of Gongga Mountain, Sichuan Province of southwestern China |
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| NIU Jian-zhi,YU Xin-xiao,ZHANG Zhi-qiang.Solute preferential transport analysis of dark coniferous forest ecosystem of Gongga Mountain, Sichuan Province of southwestern China[J].Journal of Beijing Forestry University,2009,31(5):48-53. |
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| Authors: | NIU Jian-zhi YU Xin-xiao ZHANG Zhi-qiang |
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| Institution: | Key Laboratory of Soil and Water Conservation & Desertification Combating of Ministry of Education, School of Soil and Water Conservation, Beijing Forestry University, 100083, P.R.China. |
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| Abstract: | This paper selects dark coniferous forest ecosystem of Gongga Mountain,which was in the upper reaches of Yangtze River,as the research area to study the preferential flow and solute preferential transport by inputing the tracer,KNO_3 and KBr to the self-made soil column instruments at different ways to examine density and volume changes of inflow and outflow(the ways are mass input(impulse input)and stable,well-distributed input(step input)).The results showed that dark coniferous forest ecosystem of Gongga... |
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| Keywords: | Gongga Mountain dark coniferous forest ecosystem preferential flow preferential transport solute transport breakthrough curve water quality |
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