紫色丘陵区典型小流域氮素迁移及其环境效应
文献类型：期刊论文
| 作者 | 况福虹 ; 汪涛; 朱波
|
| 刊名 | 山地学报
 |
| 出版日期 | 2006 |
| 卷号 | 24期号:5页码:601-606 |
| 关键词 | 紫色土 氮素 非点源污染 小流域 |
| 其他题名 | Non-point-source Nitrogen Movement and Its Environmental Effects in a Small Watershed in Hilly Area of Purple Soil |
| 通讯作者 | 朱波 |
| 合作状况 | 其它 |
| 中文摘要 | 选择四川盆地中部紫色土丘陵区典型小流域，通过2002-2004年3a对主要土地利用地类氮素流失、小流域地表水和井水氮素迁移形态、途径与通量的连续观测，研究非点源氮素的来源、去向、迁移特征及其环境效应。结果表明，紫色土坡地氮素主要通过径流与泥沙迁移，坡耕地、居民点氮素流失是小流域非点源氮的主要贡献者，其氮素流失负荷分别为150．4kg、73．84kg，占小流域氮素迁移总负荷的52。4％、25．7％；紫色丘陵区小流域地表水已呈现明显氮素富营养化特征，地下水硝酸盐污染较为严重，应重视该地区非点源污染控制；小流域氮素迁移的尺度差异明显，坡地以颗粒态氮为主，小流域以硝酸盐为主，氮素迁移的尺度效应可能导致非点源氮污染的异地效应，从而加剧长江三峡水体富营养化压力。 |
| 英文摘要 | A typical small watershed in hilly area of purple soil in the ． central Sichuan Basin was selected for monitoting of nitrogen movement．Continuous orientation-observations had been conducted from 2002 through 2004 to monitor nitrogen distribution in runof，sediment，SUl'~ace and ground water．Furthermore，we could know nitrogen forms and loads in different moving passes so as to find out characteristics of non--point--source nitrogen pollution and impacts on water environment． Results showed，nitrogenloads from slope cropland and residence accounted for 52．4％ an d 25．7％ of total nitrogen loads in the watershed，indicated slope cropland，residence were main eontrib． utors for non—point—source nitrogen in the watershed．Total nitrogen of surface water in this watershed averaged to 2．58 mg／L showed obvious eutriphication．Nitrate nitrogen of the ground water reached to 1 0．55 mg／L averagely which could not be used as drinking water based on WHO threshold(10．0 mV'L)．Scale efects of monitoring showed evidently resulted in contents of nitrogen forms especially particulate and nitrate nitrogen changed a lot from runof plots to outlet of the watershed． Our research suggests that non ，point--source nitrogen pollution is very serious in the hilly area of purple soil an d brings to great pressure to local water environment．However ， non-point—source nitrogen maybe imposes to water eftvironment of Yangtze River and Three Gorges Reservoirthrough long distance travel of soluble nitrate． |
| 分类号 | X522 |
| 资助信息 | 国家自然科学基金(40571093);国家重点基础研究发展计划(2003CB415202) |
| 语种 | 中文 |
| 公开日期 | 2010-07-21 |
| 源URL | [http://ir.imde.ac.cn/handle/131551/1066]  |
| 专题 | 成都山地灾害与环境研究所_成都山地所知识仓储（2009年以前） 成都山地灾害与环境研究所_山地表生过程与生态调控重点实验室 |
| 推荐引用方式 GB/T 7714 | 况福虹,汪涛,朱波. 紫色丘陵区典型小流域氮素迁移及其环境效应[J]. 山地学报,2006,24(5):601-606. |
| APA | 况福虹,汪涛,&朱波.(2006).紫色丘陵区典型小流域氮素迁移及其环境效应.山地学报,24(5),601-606. |
| MLA | 况福虹,et al."紫色丘陵区典型小流域氮素迁移及其环境效应".山地学报 24.5(2006):601-606. |
入库方式： OAI收割
来源：成都山地灾害与环境研究所
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