基于底泥重金属污染及生态风险评价的星云湖疏浚深度判定

魏伟伟; 李春华; 叶春; 侯雪超; 王昊

doi:10.12153/j.issn.1674-991X.20190120

基于底泥重金属污染及生态风险评价的星云湖疏浚深度判定

doi: 10.12153/j.issn.1674-991X.20190120

魏伟伟¹,
李春华¹,
叶春^1,*, ,,
侯雪超^1,2,
王昊¹

^1. 湖泊水污染治理与生态修复技术国家工程实验室,国家环境保护湖泊污染控制重点实验室,中国环境科学研究院
^2. 河北大学物理科学与技术学院

详细信息

作者简介:
魏伟伟(1988—),男,助理研究员,主要从事湖泊生态修复研究,wei20060216@126.com

通讯作者:
叶春 E-mail: yechbj@163.com

中图分类号: X524
计量
- 文章访问数: 447
- HTML全文浏览量: 161
- PDF下载量: 148
- 被引次数: 0
出版历程
- 收稿日期: 2019-07-08
- 刊出日期: 2020-05-20

Determination of dredging depth of Xingyun Lake based on heavy metal pollution and ecological risk assessment of sediment

WEI Weiwei¹,
LI Chunhua¹,
YE Chun^{1,*
, ,},
HOU Xuechao^1,2,
WANG Hao¹

^1. National Engineering Laboratory for Lake Pollution Control and Ecological Restoration, State Environmental Protection Key Laboratory for Lake Pollution Control, Chinese Research Academy of Environmental Sciences
^2. College of Physics Science & Technology, Hebei University

More Information

Corresponding author: YE Chun E-mail: yechbj@163.com

摘要

摘要: 湖泊污染底泥环保疏浚工程需判定合理的疏浚深度。以星云湖底泥为研究对象,采集8个底泥柱状样,分析底泥中As、Cr、Cu、Ni、Pb、Zn浓度的垂向变化特征,应用地累积指数法和潜在生态风险指数法评价了重金属污染程度及潜在生态风险,基于重金属污染程度和生态风险水平确定合理的环保疏浚深度。结果表明:星云湖底泥中As、Cr、Cu、Ni、Pb和Zn浓度平均值分别为14.76、35.76、46.14、46.08、115.76和109.82 mg/kg,As、Pb和Zn浓度均超过GB 15618—2018《土壤环境质量农用地土壤污染风险管控标准(试行)》中农用地土壤污染风险筛选值;底泥中重金属的污染多为清洁水平,部分采样点Pb和Zn偏中度污染,总体表现为Pb>Zn>As>Ni>Cu>Cr;底泥重金属潜在生态风险处于轻度生态风险水平,各采样点生态风险水平为1^#>7^#>2^#>6^#>4^#>3^#>8^#>5^#;利用临界累积深度法结合生态风险变化拐点法推荐星云湖除东南部外湖湾底泥环保疏浚深度为20~30 cm。
- 重金属 /
- 疏浚深度 /
- 地累积指数 /
- 潜在生态风险指数 /
- 星云湖
Abstract: It is necessary to determine rational dredging depth for environmental dredging projects of polluted sediment in lakes. Eight columnar sediment samples were collected from Xingyun Lake, and the vertical variation characteristics of heavy metals including As, Cr, Cu, Ni, Pb and Zn in the sediment of Xingyun Lake were analyzed. Geo-accumulation index and potential ecological risk index were used to assess the pollution degree and potential ecological risks posed by heavy metal contaminations, based on which the reasonable dredging depth was determined. The results showed that the average concentrations of As, Cr, Cu, Ni, Pb and Zn in the sediments of Xingyun Lake were 14.76, 35.76, 46.14, 46.08, 115.76 and 109.82 mg/kg, respectively. Compared with Soil Environmental Quality Risk Control Standard for Soil Contamination of Agricultural Land (Trial) (GB 15618-2018), As, Pb and Zn contents in the sediments of Xingyun Lake exceeded the screening value of agricultural land soil pollution risk. The pollution of heavy metals in the sediment was mostly clean, and the pollution of Pb and Zn in some sampling sites was relatively moderate, and the overall performance was Pb>Zn>As>Ni>Cu>Cr. The potential ecological risk of heavy metals in sediment was at the level of mild ecological hazard, and the ecological hazard level of each sampling point was 1^#>7^#>2^#>6^#>4^#>3^#>8^#>5^#. The environmental dredging depth of Xingyun Lake sediment was recommended to be 20-30 cm by using the method of critical cumulative depth combined with the inflection point of ecological risk change.
- heavy metal /
- dredging depth /
- geo-accumulation index /
- potential ecological risk index /
- Xingyun Lake

HTML全文

参考文献(22)

[1]	YALCIN M G, ILHAN S . Multivariate analyses to determine the origin of potentially harmful heavy metals in beach and dune sediments from Kizkalesi Coast (Mersin),Turkey[J]. Bulletin of Environmental Contamination and Toxicology, 2008,81(1):57-68. doi: 10.1007/s00128-008-9461-2 pmid: 18500662
[2]	BING H, WU Y, LIU E , et al. Assessment of heavy metal enrichment and its human impact in lacustrine sediments from four lakes in the mid-low reaches of the Yangtze River,China[J]. Journal of Environmental Science, 2013,25(7):1300. doi: 10.1016/s1001-0742(12)60195-8 pmid: 24218840
[3]	JARA-MARTIN M E, SOTO-JIMENEZ M F, PAEZ-SUNA F . Bulk and bioavailable heavy metals (Cd,Cu,Pb and Zn) in surface sediments from Mazatlán Harbor (SE Gulf of California)[J]. Bulletin of Environmental Contamination and Toxicology, 2008,80:150-153. doi: 10.1007/s00128-007-9334-0 pmid: 18196190
[4]	KLEIN J . Sediment dredging and macrophyte harvest as lake restoration techniques[J]. Land and Water, 1998,42(3):10-12.
[5]	PEMPKOWIAK J, SIKORA A, BIEMACKA E . Speciation of heavy metals in marine sediments vs their bioaccumulation by mussels[J]. Chemosphere, 1999,39(2):313-321. doi: 10.1016/s0045-6535(99)00112-5 pmid: 10399846
[6]	姜霞, 王雯雯, 王书航 , 等. 竺山湾重金属污染底泥环保疏浚深度的推算[J]. 环境科学, 2012,33(2):1189-1197. JANG X, WANG W W, WANG S H , et al. Calculation of environmental dredging depth of heavy metal polluted sediments in Zhushan Bay of Taihu Lake[J]. Environmental Science, 2012,33(2):1189-1197.
[7]	丁涛, 田英杰, 刘进宝 , 等. 杭州市河道底泥重金属污染评价与环保疏浚深度研究[J]. 环境科学学报, 2015,35(3):911-917. DING T, TIAN Y J, LIU J B , et al. Assessment of heavy metal status in sediments and environmental dredging depth in Hangzhou[J]. Acta Scientiae Circumstantiae, 2015,35(3):911-917.
[8]	郑田甜, 赵筱青, 卢飞飞 , 等. 云南星云湖流域种植业面源污染驱动力分析[J]. 生态与农村环境学报, 2019,35(6):730-737. ZHENG T T, ZHAO X Q, LU F F , et al. Analysis on the driving force of farming non-point source pollution in the Xingyun Lake Basin of Yunnan Province[J]. Journal of Ecology and Rural Environment, 2019,35(6):730-737.
[9]	靳澍清, 金星, 陆娅 , 等. 星云湖径流区磷矿开采开发磷污染入湖量调查[J]. 环境科学导刊, 2010,29(6):43-45.
[10]	刘永, 余俊清, 张丽莎 , 等. 近60年来星云湖沉积物中重金属污染记录[J]. 盐湖研究, 1991,1(2):142-150.
[11]	MULLER G . Index of geo-accumulation in sediments of the Rhine River[J]. Journal of Geology, 1969,2(3):108-118.
[12]	李飞, 徐敏 . 海州湾表层沉积物重金属的来源特征及风险评价[J]. 环境科学, 2014,35(3):1035-1040. LI F, XU M . Source characteristics and contamination evaluation of heavy metals in the surface sediments of Haizhou Bay[J]. Environmental Science, 2014,35(3):1035-1040.
[13]	郭晶, 李利强, 黄代中 , 等. 洞庭湖表层水和底泥中重金属污染状况及其变化趋势[J] 环境科学研究, 2016,29(1):44-51. GUO J, LI L Q, HUANG D Z , et al. Assessment of heavy metal pollution in surface water and sediment of Dongting Lake[J]. Research of Environmental Sciences, 2016,29(1):44-51.
[14]	中国环境监测总站. 中国土壤元素背景值[M]. 北京: 中国环境科学出版社, 1990: 331-379.
[15]	HAKANSON L . An ecological risk index for aquatic pollution control:a sediment logical approach[J]. Water Research, 1980,14(8):975-1001. doi: 10.1016/0043-1354(80)90143-8
[16]	王方园, 洪华嫦, 岑艳 , 等. 东江流域底泥重金属分析及潜在环境生态风险[J]. 环境化学, 2012,31(9):1328-1334. WANG F Y, HONG H C, CEN Y , et al. The analysis and pollution assessment of heavy metals in the sediment of the East River[J]. Environmental Chemistry, 2012,31(9):1328-1334.
[17]	李梁, 胡小贞, 刘娉婷 , 等. 滇池外海底泥重金属污染分布特征及风险评价[J]. 中国环境科学, 2010,30(增刊):46-51. LI L, HU X Z, LIU P T , et al. Heavy metals distribution characteristics and potential ecological risk evaluation in the sediment of outer area of Lake Dianchi[J]. China Environmental Science, 2010,30(Suppl):46-51.
[18]	BAI J H, XIAO R, CUI B S , et al. Assessment of heavy metal pollution in wetland soils from the young and old reclaimed regions in the Pearl River Estuary,South China[J]. Environmental Pollution, 2011,159(3):817-824. doi: 10.1016/j.envpol.2010.11.004 pmid: 21144635
[19]	郑国璋 . 关中娄土剖面中重金属元素的垂直分布规律研究[J]. 地球学报, 2008,29(1):109-115. ZHENG G Z . The vertical distribution regularity of heavy metal elements in Guanzhong Tier Soil Profile[J]. Acta Geoscientica Sinica, 2008,29(1):109-115.
[20]	云南省史志编撰委员会. 中华人民共和国地方志丛书:江川县志[M]. 昆明: 云南人民出版社, 1994: 2235.
[21]	高秋生, 田自强, 焦立新 , 等. 白洋淀重金属污染特征与生态风险评价[J]. 环境工程技术学报, 2019,9(1):66-75. GAO Q S, TIAN Z Q, JIAO L X , et al. Pollution characteristics and ecological risk assessment of heavy metals in Baiyangdian Lake[J]. Journal of Environmental Engineering Technology, 2019,9(1):66-75.
[22]	简敏菲, 李玲玉, 徐鹏飞 , 等. 鄱阳湖-乐安河湿地水土环境中重金属污染的时空分布特征[J]. 环境科学, 2014,35(5):1760-1765. JIAN M F, LI L Y, XU P F , et al. Spatiotemporal variation characteristics of heavy metals pollution in the water,soil and sediments environment of the Lean River-Poyang Lake Wetland[J]. Environmental Science, 2014,35(5):1760-1765.