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[1]杨丽伟,张菊,邓焕广,等.东平湖底泥重金属污染及其对摇蚊分布的影响[J].应用与环境生物学报,2016,22(22卷04):680-688.[doi:10.3724/SP.J.1145.2015.11023]
 YANG Liwei,ZHANG Ju,DENG Huanguang,et al.Heavy metal pollution and its influence on the distribution of chironomids in the sediments of Lake Dongping, Shandong, China*[J].Chinese Journal of Applied & Environmental Biology,2016,22(22卷04):680-688.[doi:10.3724/SP.J.1145.2015.11023]
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东平湖底泥重金属污染及其对摇蚊分布的影响()
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《应用与环境生物学报》[ISSN:1006-687X/CN:51-1482/Q]

卷:
22卷
期数:
2016年22卷04期
页码:
680-688
栏目:
研究论文
出版日期:
2016-08-25

文章信息/Info

Title:
Heavy metal pollution and its influence on the distribution of chironomids in the sediments of Lake Dongping, Shandong, China*
作者:
杨丽伟张菊邓焕广侯战方陈诗越
1江苏师范大学地理测绘与城乡规划学院 徐州 2211162聊城大学环境与规划学院 聊城 252059
Author(s):
YANG Liwei1 ZHANG Ju2 DENG Huan’guang2 HOU Zhanfang2 & CHEN Shiyue1**
1School of Geography, Geamatics, and Planning, Jiangsu Normal University, Xuzhou 221116, China2School of Environment and Planning, Liaocheng University, Liaocheng 252059, China
关键词:
东平湖重金属摇蚊潜在生态危害冗余分析
Keywords:
Lake Dongping heavy metals chironomidea potential ecological risk redundancy analysis
分类号:
Q178.1 + X822
DOI:
10.3724/SP.J.1145.2015.11023
摘要:
东平湖是南水北调东线的重要调蓄湖,其水环境状况对输水安全具有重要意义. 为分析与评价东平湖底泥重金属污染状况及其与摇蚊分布关系,采集30个东平湖底泥样品,分别测试和鉴定其中的元素含量和摇蚊亚化石种属. 运用地积累指数和生态危害指数法对东平湖底泥重金属污染进行分析评价,发现Cu、Pb、Zn、Ni是主要污染物,但污染程度相对较低,整体为轻度—中度污染水平,潜在生态危害性为轻微水平,且其污染及危害性均呈现出由湖区东南向西北逐渐降低的空间分布特征. 其中,Cu污染最为严重,部分地区达到强污染水平. 东平湖底泥共鉴定出41个摇蚊属种,主要优势种由Stempellinella-Zavrelia(30.88%)、Propsilocerus akamusi-type(26.79%)、Paratanytarsus(10.34%)、Cricotopus sylvestris-type(7.52%)和Hydrobaenus conformis-type(5.19%)组成. Stempellinella-Zavrelia和Propsilocerus akamusi-type是东平湖的绝对优势种,合占全湖的57.67%,且几乎呈全湖性分布. 摇蚊RDA分析显示第一轴特征值为0.073,摇蚊种属与环境的相关关系达到了58.4%. RDA结果表明影响摇蚊组成分布的显著因子是Mn,并解释了7.3%的摇蚊变率. 摇蚊属种Stempellinella-Zavrelia、Propsilocerus akamusi-type、Paratanytarsus、Hydrobaenus conformis-type等分布在Mn污染较小的区域. Pearson相关分析进一步表明东平湖底泥不同摇蚊种属对重金属Mn污染的响应存在显著差异. 总体来看,底泥重金属对东平湖摇蚊组成和分布有显著影响,但不同金属对其影响存在差异. (图5 表3 参32)
Abstract:
In order to understand the characteristics of heavy metal pollution and its relationship with chironomids, we collected 30 samples of surface sediment in Lake Dongping. The geo-accumulation index and ecological risk index were used to evaluate and analyze the heavy metal pollution in surface sediment of Lake Dongping. Results show that the main pollution elements were Cu, Pb, Zn, and Ni. The level of pollution was relatively low and the potential ecological risk in the state of mild level. The Cu pollution was more severe than other several kinds of heavy metal, and reached strong level in some areas. The pollution and potential ecological harm of heavy metals (Cu, Pb, Zn and Ni) was characterized by a spatial distribution that gradually decreased from southeast to northwest, indicating that the pollution of the Dawen River had great impact on the environment of Lake Dongping. Furthermore, 41 taxa of subfossil chironomids (including the unidentified taxa) were present in Lake Dongping. The dominant taxa consisted of Stempellinella-Zavrelia (30.88%), Propsilocerus akamusi-type (26.79%), Paratanytarsus (10.34%), Cricotopussylvestris-type (7.52%), and Hydrobaenus conformis-type (5.19%). Among them, the taxa of Stempellinella-Zavrelia and Propsilocerus akamusi-type were distributed in almost the entire lake. The value of the first axis for redundancy analysis was 0.073, and the correlation between species and environmental was up to58.4%. The RDA results showed Mn as the significant variable of heavy metals affecting chironomids, explaining 7.3% of variable ratio for chironomids. Taxa slightly?polluted by Mn distributed abundantly in the area, including Stempellinella-Zavrelia, Propsilocerus akamusi-type, Paratanytarsus, and Hydrobaenus conformis-type, with significant differences in their responses to Mn.

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更新日期/Last Update: 2016-08-25