| 三峡库区兰陵溪小流域养分流失特征 |
| |
| 引用本文： | 曾立雄,肖文发,黄志霖,王佐庆.三峡库区兰陵溪小流域养分流失特征[J].环境科学,2013,34(8):3035-3042. |
| |
| 作者姓名： | 曾立雄 肖文发 黄志霖 王佐庆 |
| |
| 作者单位： | 1. 中国林业科学研究院森林生态环境与保护研究所,国家林业局森林生态环境重点实验室,北京 100091
2. 秭归县林业局,宜昌,443600 |
| |
| 基金项目： | "十二五"国家科技支撑计划项目(2011BAD38B04);长江三峡库区(秭归)森林生态定位站项目 |
| |
| 摘 要： | 三峡库区蓄水后,库区部分支流速度变缓,小流域面源污染已经成为库区面临的重要环境问题.本文以兰陵溪小流域的一个封闭式集水区为研究对象,监测集水区尺度典型降雨条件下氮磷流失的过程和负荷,比较不同养分流失途径,结果表明:①TN的浓度随着径流量的增加的逐渐降低,降雨停止后缓慢上升,而TP的浓度随着径流量的增加而迅速升高,降雨停止后则迅速下降;②TN的负荷流失过程和降雨量关系较为密切,TP的负荷流失受降雨强度影响较大,N素的流失以溶解态为主,而P素则以颗粒态为主;③地表径流是研究区P素和N素流失主要途径,同时壤中流对N素流失的影响也非常大;④N和P各形态的流失负荷与径流量均呈显著的线性关系;⑤集水区TP的年流失负荷为28.94 kg·(a·km2)-1,TN的年流失负荷为1 040.41 kg·(a·km2)-1。
|
| 关 键 词： | 三峡库区 小流域 退耕还林 面源污染 |
| 收稿时间： | 2012/10/12 0:00:00 |
| 修稿时间： | 3/6/2013 12:00:00 AM |
Characteristics of Nutrient Loss of Lanlingxi Watershed in the Three Gorges Reservoir Area |
| |
| ZENG Li-xiong,XIAO Wen-f,HUANG Zhi-lin and WANG Zuo-qing.Characteristics of Nutrient Loss of Lanlingxi Watershed in the Three Gorges Reservoir Area[J].Chinese Journal of Environmental Science,2013,34(8):3035-3042. |
| |
| Authors: | ZENG Li-xiong XIAO Wen-f HUANG Zhi-lin and WANG Zuo-qing |
| |
| Institution: | Key Laboratory of Forest Ecology and Environment, State Forestry Administration, Research Institute of Forest Ecology, Environment and Protection, Chinese Academy of Forestry, Beijing 100091, China;Key Laboratory of Forest Ecology and Environment, State Forestry Administration, Research Institute of Forest Ecology, Environment and Protection, Chinese Academy of Forestry, Beijing 100091, China;Key Laboratory of Forest Ecology and Environment, State Forestry Administration, Research Institute of Forest Ecology, Environment and Protection, Chinese Academy of Forestry, Beijing 100091, China;Forestry Bureau of Zigui Country, Yichang 443600, China |
| |
| Abstract: | |
| |
| Keywords: | the Three Gorges Reservoir Area watershed returning farmland to forest agricultural non-point source pollution (AGNPS) |
| 本文献已被 CNKI 万方数据 等数据库收录！ |
| 点击此处可从《环境科学》浏览原始摘要信息 |
| 点击此处可从《环境科学》下载免费的PDF全文 |
|
