[1]苏斌,傅开道,钟荣华,等.澜沧江-湄公河干流底沙重金属含量空间变化及污染评价[J].山地学报,2011,(06):660.
　SU Bin,FU Kaidao,ZHONG Ronghua,et al.Spatial Change of Heavy Metal Concentration and Pollution Assessment in Bed Loads along Mainstream of the Lancang-Mekong River[J].Mountain Research,2011,(06):660.
点击复制

澜沧江-湄公河干流底沙重金属含量空间变化及污染评价()
分享到：

《山地学报》[ISSN:1008-2186/CN:51-1516]

卷:
期数:
2011年06期
页码:
660
栏目:
山地学报
出版日期:
2011-01-01

文章信息/Info

Title:
Spatial Change of Heavy Metal Concentration and Pollution Assessment in Bed Loads along Mainstream of the Lancang-Mekong River
作者:
苏斌;傅开道;钟荣华;宋静宜;
云南大学亚洲国际河流中心，云南 昆明 650091
Author(s):
SU Bin;  FU Kaidao;  ZHONG Ronghua; SONG Jingyi
Asian International Rivers Center, Yunnan University, Kunming 650091, China
关键词:
澜沧江-湄公河流域; 重金属污染; 地积累指数法; 潜在生态危害指数法
Keywords:
the Lancang-Mekong River;  heavy metal pollution;  index of geoaccumulation;  potential ecological risk index
分类号:
X522
文献标志码:
A
摘要:
国际河流澜沧江-湄公河流域资源开发引起的水文情势、泥沙和水环境变化一直是国际社会关注的重点。本研究选取了该河干流境内外8个关键河段的底沙进行采样,并进行5种重金属元素(锌Zn、铅Pb、铜Cu、铬Cr、砷As)含量实验测试,分析了该河干流底沙重金属含量空间变化。运用沉积学原理,应用地积累指数法和潜在生态危害指数法评价了澜沧江-湄公河流域干流底沙重金属污染的情况。结果显示:1.在澜沧江-湄公河流域干流底沙重金属元素中Zn、Pb、As在上游中国境内澜沧江底沙中的含量平均值分别为91.43 mg/kg、41.85 mg/kg、21.84 mg/kg,均大于其在下游境外湄公河底沙中平均含量,其平均含量分...
Abstract:
More global attention is being paid to hydrological regime, sediment and water environmental changes caused by resource development in the Lancang-Mekong River Basin. In this paper, Eight critical reaches along mainstream of the Lancang-Mekong River were chosen for bed loads sampling, and 5 heavy metal elements were tested in the laboratory to discuss their spatial changes and pollution assessment in the watercourse. Methods of Index of Geoaccumulation and Ecological Risk Index were employed to assess heavy metal pollution status in the mainstream of the Lancang-Mekong river. The results show that (1) the average concentration of the heavy metal elements Zn、Pb、As in the bed loads in the Lancang (Upper Mekong) river is 9143 mg/kg、4185 mg/kg、2184 mg/kg， respectively, greater than the average concentration of those heavy metal elements in the bed loads of the Mekong (Lower Mekong) river(6817 mg/kg、2822 mg/kg、1497 mg/kg)， the average concentration of Cr in the bed sediment of the downstream-Mekong river is 41886 mg/kg larger than that in the Lancang river where the average concentration of Cr is 4219 mg/kg, and Cr concentration reaches 76293 mg/kg at Luang Prabang and 4229 mg/kg at Pakse. The Cu concentrations of in the 8 samples are almost equivalent, though they are slightly low at Jiajiu as 117 mg/kg and at the boundary 7 mg/kg. (2) The result of the Index of Geoaccumulation shows that the contamination induced with Zn, Pb and As in the Upper Mekong has exceeded the pollution standard, in which Pb and As are worse than Zn. However, Cr is the major pollutant in the Lower Mekong, especially at Luang Prabang and Pakse. (3) The Ecological Risk Index suggests that the potential ecological risk of heavy metal in the whole Mekong is light．Based on analysis above, we argue that the heavy metal pollution in bed loads caused by mining of mineral resources or geochemical background in the upper part of the basin has not led to transboundary pollutant issue, probably due to reservoir trapping and dilution along the river. This research and results could enhance the deficiency of study in heavy metal pollution in the whole Mekong River, as well as a reference for government to decisionmaking during resource utilization in the watershed.

备注/Memo

备注/Memo:
收稿日期(Received date)：2011-06-20；改回日期(Accepted)：2011-10-12。
基金项目（Foundation item）：国家自然科学
基金项目; 云南省中青年学术技术带头人后备人才计划。\[National Natural Science Foundation of China, No. 40801218;The Reserver’s Training Projects of Yunnan Mid-Youth Scientific Technical Leader, No. 2009CI050.\]
作者简介（Biography）：苏斌（1986－），彝族，云南昆明人，跨境生态与安全硕士研究生，从事国际河流泥沙污染及其迁移方向研究。\[Yi,born in Kunming,master,engaged in international migration of river sediment pollution and its.\]E-mail: kdfu@ynu.edu.cn
更新日期/Last Update: 1900-01-01