海南岛东北部红树林湿地沉积物中重金属污染评价.doc

文档介绍：目录
0 引言 3
1 研究区概况 4
2 样品的采集、处理及测定 4
4
5
3 沉积物重金属污染评价 6
评价方法的选取 6
(ERA)模型的建立 6
3. 3 回归过量分析(ERA)模型法对重金属污染的评价 7
(ERA)模型法的科学依据 7
(ERA)模型分析及结果 8
(ERA)模型法的改进 9
9
10
4 结论 11
5 致谢 11
参考文献 11
海南岛东北部红树林湿地沉积物中重金属污染评价本项目得到海南省自然科学基金项目(40879);海南省教育厅项目(HJKJ2010-28)及教育部留学回国人员科研启动基金项目资助
作者:杨迅捷季一诺指导老师:赵志忠教授
(海南师范大学,地理与旅游学院,海南中国 571158)
摘要:本研究在以海南岛东北部的红树林湿地沉积物为研究对象,在分析沉积物中各种元素含量的基础之上,运用回归过量分析法和内梅罗综合污染指数法等研究方法对海南岛东北部脆弱的红树林湿地生态系统进行科学的评价。结果表明:海南岛东北部的红树林湿地沉积物环境质量总体较好,但Cd、Cu和Ni的均值较高,其他重金属相对含量相对较低。相比较而言,清澜港、东寨港和新盈港等三个红树林湿地中,东寨港和清澜港综合评价为Ⅲ级,属于中污染湿地;新盈港的污染等级为Ⅱ级,属轻污染湿地。
关键词:沉积物;重金属;污染评价;红树林
Contamination Assessment of Heavy Metals in ediments of Mangrove Forestsin Northeastern Hainan Island
Author: Yang Xunjie, Ji Yinuo Tutor: Professor Zhao Zhizhong
(School of Geography and Tourism, Hainan Normal University, Haikou571158)
Abstract: Based on the analysis of the contents of heavy metals(Cu、Pb、Cd、Zn、Hg、As、Cr、Ni)in the sediments in the mangrove wetland areas in northeastern Hainan Island, the author tries to assess the mangrove wetland ecosystems scientifically of the mangrove wetland areas by using the method of the Excess after Regression Analysis (ERA) and Nemerow Pollution Index Method. The result indicates that the quality of sediments of the mangrove forests is acceptably satisfied. However, the contents of Cd, Cu and Ni are still higher than the background concentration, while the rest remains relatively low. Moreover, paring with the multiple pollution indexes of the three sections of Qinglangang, Dongzhaigang and Xinyinggang, the
result indicated that environment qualities of Dongzhaigang and Qinglangang are classified as the third class, which is moderately contaminated, while Xinyinggang is classified as the second class, or slightly contaminated.
Keywords: Sediments; Heavy metals; Contamination Estimate; Mangrove Forests.
0 引言
海南岛地处北半球热带北缘,介于18°09′N~21°1