洞庭湖表层沉积物中重金属变化趋势及风险评估
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摘要
为掌握洞庭湖重金属污染的变化趋势及风险,利用2007—2017年洞庭湖表层沉积物中Cr、Cu、Pb、Cd、Hg、As的连续监测数据,通过潜在生态风险指数法进行评价,并通过Daniel趋势检验和M-K(Mann-Kendall)突变检验对重金属的变化趋势进行分析,同时结合历史文献数据对1984—2017年洞庭湖沉积物中重金属的演变特征进行分析.结果表明,2007—2017年洞庭湖沉积物重金属RI(综合潜在生态风险指数)范围为32. 63～917. 23,平均值为196. 24,属于"较高"风险水平,空间分布呈南洞庭湖>东洞庭湖>西洞庭湖,不同重金属单因子潜在生态风险水平呈Cd>Hg>As>Pb>Cu>Cr的特征. Daniel趋势检验和M-K突变检验结果显示,2007—2017年除西洞庭湖的w(Pb)、东洞庭湖和西洞庭湖的w(Hg)外,其他重金属质量分数在各湖区都呈下降趋势;东洞庭湖和南洞庭湖重金属潜在生态风险水平分别在2014—2015年和2016年发生了突变. 1984—2017年洞庭湖沉积物中重金属质量分数演变特征分析表明,1984年和1990—1999年全湖重金属综合潜在生态风险分别为"较高"和"中等"水平,2004—2010年和2011—2015年均为"很高"水平,2016—2017年降至"较高"水平,同时w(Cu)、w(Pb)、w(Cd)、w(As)在2016—2017年下降明显,而w(Cr)、w(Hg)还有上升趋势.研究显示,洞庭湖重金属污染在2014—2017年有明显下降趋势,其主要原因可能是湘江和洞庭湖的全面综合治理,Cr、Pb和Hg在部分湖区还存在持续污染,应作为洞庭湖重金属下一步防治的重点.
The variation trend and ecological risk of heavy metals in Dongting Lake sediments were evaluated by the Daniel and MannKendall( M-K) statistic test and the potential ecological risk index using the continuous monitoring data of Cr,Cu,Pb,Cd,Hg and As in the surface sediments of Dongting Lake during 2007-2017,and combined with historical data during 1984-2017 to analyze the characteristics of long-term evolution of the heavy metals in Dongting Lake sediments over the past 30 years. The results showed that the average potential ecological risk index( RI) of the heavy metals in the sediments of Dongting Lake from 2007 to 2017 was 196. 24(ranging from 32. 63 to 917. 23),suggesting a high ecological risk. The spatial distribution of the RI values was as follows: South Dongting Lake>East Dongting Lake>West Dongting Lake. The decreasing order of the values of the single ecological risk index of the heavy metals was as follows: Cd>Hg>As>Pb>Cu>Cr. The results of the Daniel trend test showed that,except for w( Pb) of West Dongting Lake and w( Hg) of East and West Dongting Lake,the contents of the heavy metals showed a decreasing trend in every lake regions in 2007-2017. The results of the M-K statistic test showed that,in recent 10 years,the RI values of the heavy metals in the sediments of East Dongting Lake mutated during 2014-2015,and that of the South Dongting Lake mutated in 2016. Analysis of the evolution in the last 30 years showed that the RI of the heavy metals in the whole lake was in high and moderate risk in 1984 and during 1990-1999,respectively,presented a very high risk during 2004-2010 and 2011-2015,and reduced to a relatively high-risk level in 2016-2017. In addition,the values of w(Cu),w(Pb),w( Cd),w( As) decreased significantly during 2016 to 2017,however,the values of w( Hg) and w( Cr) increased.Research showed that the pollution of the heavy metals in Dongting Lake sediments presented decreasing trend in the last two or three years,and the control of heavy metals pollution in Dongting Lake and Xiangjiang River may be the main reason for it. The pollution of Hg,Cr,and Pb still existed in some lake regions,and they should be the focus of the next step in the prevention of heavy metals in Dongting Lake.
The variation trend and ecological risk of heavy metals in Dongting Lake sediments were evaluated by the Daniel and MannKendall( M-K) statistic test and the potential ecological risk index using the continuous monitoring data of Cr,Cu,Pb,Cd,Hg and As in the surface sediments of Dongting Lake during 2007-2017,and combined with historical data during 1984-2017 to analyze the characteristics of long-term evolution of the heavy metals in Dongting Lake sediments over the past 30 years. The results showed that the average potential ecological risk index( RI) of the heavy metals in the sediments of Dongting Lake from 2007 to 2017 was 196. 24(ranging from 32. 63 to 917. 23),suggesting a high ecological risk. The spatial distribution of the RI values was as follows: South Dongting Lake>East Dongting Lake>West Dongting Lake. The decreasing order of the values of the single ecological risk index of the heavy metals was as follows: Cd>Hg>As>Pb>Cu>Cr. The results of the Daniel trend test showed that,except for w( Pb) of West Dongting Lake and w( Hg) of East and West Dongting Lake,the contents of the heavy metals showed a decreasing trend in every lake regions in 2007-2017. The results of the M-K statistic test showed that,in recent 10 years,the RI values of the heavy metals in the sediments of East Dongting Lake mutated during 2014-2015,and that of the South Dongting Lake mutated in 2016. Analysis of the evolution in the last 30 years showed that the RI of the heavy metals in the whole lake was in high and moderate risk in 1984 and during 1990-1999,respectively,presented a very high risk during 2004-2010 and 2011-2015,and reduced to a relatively high-risk level in 2016-2017. In addition,the values of w(Cu),w(Pb),w( Cd),w( As) decreased significantly during 2016 to 2017,however,the values of w( Hg) and w( Cr) increased.Research showed that the pollution of the heavy metals in Dongting Lake sediments presented decreasing trend in the last two or three years,and the control of heavy metals pollution in Dongting Lake and Xiangjiang River may be the main reason for it. The pollution of Hg,Cr,and Pb still existed in some lake regions,and they should be the focus of the next step in the prevention of heavy metals in Dongting Lake.
引文
[1] YANG Bo,LIU Yuping,OU Fuping,et al. Temporal and spatial analysis of COD concentration in east Dongting Lake by using of remotely sensed data[J]. Procedia Environmental Sciences,2011,10:2703-2708.
[2] QINA Y,ZHENG M H,GAO L,et al. Heavy metal contamination and its environmental risk assessment in surface sediments from Lake Dongting,People's Republic of China[J]. Bulletin of Environmental Contamination and Toxicology,2005,75(1):204-210.
[3]谢意南,欧阳美凤,黄代中,等.洞庭湖及其入湖口沉积物中重金属的污染特征、来源与生态风险[J].环境化学,2017,36(10):2253-2264.XIE Yinan,OUYANG Meifeng,HUANG Daizhong,et al. Pollution characteristics,sources and ecological risk of heavy metals in sediments from Dongting Lake and its lake inlets[J].Environmental Chemistry,2017,36(10):2253-2264.
[4] LIANG Jie,LIU Jiayu,YUAN Xingzhong,et al.Spatial and temporal variation of heavy metal risk and source in sediments of Dongting Lake wetland,Mid-South China[J]. Journal of Environmental Science and Health Part A:Toxic/Hazardous Substances&Environmental Engineering,2015,50(1):100-108.
[5]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 Jing,LI Liqiang,HUANG Daizhong,et al.Assessment of heavy metal pollution in surface water and sediment of Dongting Lake[J].Research of Environmental Sciencs,2016,29(1):44-51.
[6] LI Jingbao,YIN Hui,CHENG Jiang,et al.Sedimentation effects of the Dongting Lake area[J]. Journal of Geographical Sciences,2009,19(3):287-298.
[7] REN Jun,SHANG Zhen,TAO Ling,et al.Multivariate analysis and heavy metals pollution evaluation in Yellow River surface sediments[J].Polish Journal of Environmental Studies,2015,3(24):1041-1048.
[8] RAMAMOORTHY S,RUST B R.Heavy metal exchange processes in sediment-water systems[J]. Environmental Geology,1978,2(3):165-172.
[9] TURMEL D,PARKER G,LOCAT J. Reprint of evolution of an anthropic source to sink system:Wabush Lake[J]. Earth-Science Reviews,2015,153:175-191.
[10] WANG Shaofeng, JIA Yongfeng, WANG Shuying, et al.Fractionation of heavy metals in shallow marine sediments from Jinzhou Bay,China[J]. Journal of Environmental Sciences,2010,22(1):23-31.
[11] LIU Honglei,LI Liqiang,YIN Chengqing,et al.Fraction distribution and risk assessment of heavy metals in sediments of Moshui Lake[J].Journal of Environmental Sciences,2008,20:390-397.
[12] RERTIN C,VOURG A. Trends in the heavy metal content(Cd,Pb,Zn)of river sediments in the drainage basin of smelting activities[J].Water Research,1995,29(7):1729-1736.
[13] ABDEL-SATAR A M,ALI M H,GOHER M E. Distribution and speciation of Fe,Mn,Zn,Cu,Pb and P in surface sediments of Lake Mariut,Egypt[J].Oceanological and Hydrobiological Studies,2017,46(2):154-167.
[14] ZHANG Yanfeng,HAN Yuwei,YANG Jinxi,et al. Toxicities and risk assessment of heavy metals in sediments of Taihu Lake,China,based on sediment quality guidelines[J]. Journal of Environmental Sciences,2017,12:31-38.
[15] WARDHANI E,ROOSMINI D,NOTODARMOJO S.Status of heavy metal in sediment of Saguling Lake,West Java[C]//IOP Conference Series:Earth and Environmental Science,2017.
[16] RAJESHKUMAR S,LIU Yang,ZHANG Xiangyang,et al.Studies on seasonal pollution of heavy metals in water,sediment,fish and oyster from the Meiliang Bay of Taihu Lake in China[J].Chemosphere,2018,191(4):626-638.
[17] MAKOKHA V A,QI Yueling,SHEN Yun,et al. Concentrations,distribution,and ecological risk assessment of heavy metals in the East Dongting and Honghu Lake,China[J]. Exposure and Health,2016,8(1):31-41.
[18] HU Cong,DENG Zhengmiao,XIE Yonghong,et al. The risk assessment of sediment heavy metal pollution in the east Dongting Lake wetland[J].Journal of Chemistry,2015,2015(15):1-8.
[19] LI Fei,HUANG Jinhui,ZENG Guangming,et al.Integrated source apportionment,screening risk assessment,and risk mapping of heavy metals in surface sediments:a case study of the Dongting Lake,Middle China[J]. Human and Ecological Risk Assessment:An International Journal,2014,20(5):1213-1230.
[20] YAO Zhigang,BAO Zhengyu,GAO Pu.Environmental assessments of trace metals in sediments from Dongting Lake,Central China[J].Journal of China University of Geosciences,2006,17(4):310-319.
[21]张光贵,田琪,郭晶.洞庭湖表层沉积物重金属中生态风险及其变化趋势研究[J].生态毒理学报,2015,10(3):184-191.ZHANG Guanggui,TIAN Qi,GUO Jing.Heavy metal ecological risk of surface sediments in Dongting Lake and its trend[J]. Asian Journal of Ecotoxicology,2015,10(3):184-191.
[22]李芬芳,符哲,李利强,等.洞庭湖表层沉积物重金属污染状况评估[J].环境化学,2017,36(11):2462-2471.LI Fenfang,FU Zhe,LI Liqiang,et al. Assessment on heavy metal pollution in the surface sediments of Dongting Lake[J].Environmental Chemistry,2017,36(11):2462-2471.
[23] HAKANSON L. An ecological risk index for aquatic pollution control:a sedimentological approach[J]. Water Research,1980,14(8):975-1001.
[24]李健,曾北危,姚岳云,等.洞庭湖水系水体环境背景值调查研究[J].环境科学,1986,7(4):62-68.LI Jian, ZENG Beiwei, YAO Yueyun, et al. Studies on environmental background levels in waters of Dongting Lake system[J].Environmental Science,1986,7(4):62-68.
[25]刘婉清,倪兆奎,吴志强,等.江湖关系变化对鄱阳湖沉积物重金属分布及生态风险影响[J].环境科学,2014,35(5):1750-1758.LIU Wanqing,NI Zhaokui,WU Zhiqiang,et al. Influence of the river-lake relation change on the distribution of heavy metal and ecological risk assessment in the surface sediment of Poyang Lake[J].Environmental Science,2014,35(5):1750-1758.
[26]滑丽萍,华珞,高娟,等.中国湖泊底泥的重金属污染评价研究[J].土壤,2006,38(4):366-373.HUA Liping,HUA Luo,GAO Juan,et al. Heavy metal pollution of sediments of lakes in China[J].Soils,2006,38(4):366-373.
[27]田琪,张光贵,谢意南,等.洞庭湖主要入湖口表层沉积物重金属分布特征与生态风险评价[J].生态毒理学报,2017,12(2):191-200.TIAN Qi,ZHANG Guanggui,XIE Yinan,et al. Distribution and ecological risk assessment of heavy metals in surface sediments from main tributary entrances of Dongting Lake[J]. Asian Journal of Ecotoxicology,2017,12(2):191-200.
[28]万群,李飞,祝慧娜,等.东洞庭湖沉积物中重金属的分布特征、污染评价与来源辨析[J].环境科学研究,2011,24(12):1378-1384.WAN Qun,LI Fei,ZHU Huina,et al. Distribution characteristics,pollution assessment and source identification of heavy metals in the sediment of East Dongting Lake[J]. Research of Environmental Sciences,2011,24(12):1378-1384.
[29] YAO Zhigang,BAO Zhengyu,ZHOU Lifa,et al. A statistical approach for determining the environment impact of surface sediments from the Dongting Lake area,Central China[J]. Chinese Journal of Geochemistry,2009,28(1):79-104.
[30] MAO Longjiang,MO Duowen,GUO Yuanyuan,et al. Multivariate analysis of heavy metals in surface sediments from lower reaches of the Xiangjiang River,southern China[J]. Environmental Earth Sciences,2013,69(3):765-771.
[31] KENDALL M. Rand correlation methods[M]. London:Charles Criffin,1975.
[32] MANN H B. Nonparametric tests against trend[J]. Econometrica,1945,13(3):245-259.
[33] LIU Changming,ZHENG Hongxing.Changes in components of the hydrological cycle in the Yellow River Basin during the second half of the 20thcentury[J]. Hydrological Processes,2004,18(12):2337-2345.
[34]姚志刚,鲍征宇,高璞.洞庭湖沉积物重金属环境地球化学[J].地球化学,2006,35(6):629-638.YAO Zhigang,BAO Zhengyu,GAO Pu.Environmental geochemistry of heavy metals in sediments of Dongting Lake[J]. Geochimica,2006,35(6):629-638.
[35]童霆.河口三角洲元素含量与矿产资源:以湘资沅澧为例[J].第四纪研究,2005,25(3):298-305.TONG Ting. Element concentrations in river delta sediments and mineral resources potential in the drainage basin:a case study in the Xiangjiang,Zishui,Yuanjiang,and Lishui rivers basins[J].Quaternary Sciences,2005,25(3):298-305.
[36]湖南省国土委员会办公室,湖南省经济研究中心.洞庭湖区整治开发综合考察研究专题报告[R].长沙:湖南省国土委员会办公室,1985.
[37]童霆.洞庭湖的净化作用与微量元素资源[J].中国地质,1998(10):33-36.TONG Ting. Purifying and minor element mineral resources in the Dongting Lake[J].Geology in China,1998(10):33-36.
[38]卜跃先,陆强国,谭建强.洞庭湖水质污染状况与综合评价[J].人民长江,1997,28(2):40-43.PU Yuexian,LU Qiangguo,TAN Jianqiang.Water pollution status in Dongting Lake and its comprehensive assessment[J]. Yangtze River,1997,28(2):40-43.
[39]杨国兵.洞庭湖水质污染状况及综合评价[C]//中国水利学会2003学术年会论文集.北京:中国水利学会,2003:633-636.
[40]申锐莉,鲍征宇,周旻,等.洞庭湖湿地水相中重金属的地球化学评价[J].人民长江,2007(11):121-123.
[41]毕斌.洞庭湖水环境中重金属污染特征、赋存形态及其源解析[D].临汾:山西师范大学,2017.
[42]卢宏玮,曾光明,何理.洞庭湖流域水体污染物变化趋势及风险分析[J].水土保持通报,2004,24(2):12-16.LU Hongwei,ZENG Guangming,HE Li.Changing tendency and risk of water contamination in Dongting Lake watershed[J]. Bulletin of Soil and Water Conservation,2004,24(2):12-16.
[43]申锐莉,张建新,鲍征宇,等.洞庭湖水质评价(2002—2004年)[J].湖泊科学,2006,18(3):243-249.SHEN Ruili,ZHANG Jianxin,BAO Zhengyu,et al. Water quality assessment in Lake Dongting(2002-2004),China[J]. Journal of Lake Sciences,2006,18(3):243-249.
[44]张光贵,谢意南,莫永涛.洞庭湖典型水域表层沉积物中重金属空间分布特征及其潜在生态风险评价[J].环境科学研究,2015,28(10):1545-1552.ZHANG Guanggui,XIE Yinan,MO Yongtao. Spatial distribution characteristics and potential ecological risk assessment of heavy metals in typical water surface sediments of Dongting Lake[J].Research of Environmental Sciences,2015,28(10):1545-1552.
[45]施汶妤.长江中下游四大沿江湖泊沉积物记录的全新世环境变化及其对比分析[C]//中国地理学会百年庆典学术论文摘要集.北京:中国地理学会,2009:35.
[46]来红州,莫多闻,苏成.洞庭湖演变趋势探讨[J].地理研究,2004,23(1):78-86.LAI Hongzhou,MO Duowen,SU Cheng. Discussion on the evolutionary trend of Lake Dongting[J]. Geographical Research,2004,23(1):78-86.
[2] QINA Y,ZHENG M H,GAO L,et al. Heavy metal contamination and its environmental risk assessment in surface sediments from Lake Dongting,People's Republic of China[J]. Bulletin of Environmental Contamination and Toxicology,2005,75(1):204-210.
[3]谢意南,欧阳美凤,黄代中,等.洞庭湖及其入湖口沉积物中重金属的污染特征、来源与生态风险[J].环境化学,2017,36(10):2253-2264.XIE Yinan,OUYANG Meifeng,HUANG Daizhong,et al. Pollution characteristics,sources and ecological risk of heavy metals in sediments from Dongting Lake and its lake inlets[J].Environmental Chemistry,2017,36(10):2253-2264.
[4] LIANG Jie,LIU Jiayu,YUAN Xingzhong,et al.Spatial and temporal variation of heavy metal risk and source in sediments of Dongting Lake wetland,Mid-South China[J]. Journal of Environmental Science and Health Part A:Toxic/Hazardous Substances&Environmental Engineering,2015,50(1):100-108.
[5]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 Jing,LI Liqiang,HUANG Daizhong,et al.Assessment of heavy metal pollution in surface water and sediment of Dongting Lake[J].Research of Environmental Sciencs,2016,29(1):44-51.
[6] LI Jingbao,YIN Hui,CHENG Jiang,et al.Sedimentation effects of the Dongting Lake area[J]. Journal of Geographical Sciences,2009,19(3):287-298.
[7] REN Jun,SHANG Zhen,TAO Ling,et al.Multivariate analysis and heavy metals pollution evaluation in Yellow River surface sediments[J].Polish Journal of Environmental Studies,2015,3(24):1041-1048.
[8] RAMAMOORTHY S,RUST B R.Heavy metal exchange processes in sediment-water systems[J]. Environmental Geology,1978,2(3):165-172.
[9] TURMEL D,PARKER G,LOCAT J. Reprint of evolution of an anthropic source to sink system:Wabush Lake[J]. Earth-Science Reviews,2015,153:175-191.
[10] WANG Shaofeng, JIA Yongfeng, WANG Shuying, et al.Fractionation of heavy metals in shallow marine sediments from Jinzhou Bay,China[J]. Journal of Environmental Sciences,2010,22(1):23-31.
[11] LIU Honglei,LI Liqiang,YIN Chengqing,et al.Fraction distribution and risk assessment of heavy metals in sediments of Moshui Lake[J].Journal of Environmental Sciences,2008,20:390-397.
[12] RERTIN C,VOURG A. Trends in the heavy metal content(Cd,Pb,Zn)of river sediments in the drainage basin of smelting activities[J].Water Research,1995,29(7):1729-1736.
[13] ABDEL-SATAR A M,ALI M H,GOHER M E. Distribution and speciation of Fe,Mn,Zn,Cu,Pb and P in surface sediments of Lake Mariut,Egypt[J].Oceanological and Hydrobiological Studies,2017,46(2):154-167.
[14] ZHANG Yanfeng,HAN Yuwei,YANG Jinxi,et al. Toxicities and risk assessment of heavy metals in sediments of Taihu Lake,China,based on sediment quality guidelines[J]. Journal of Environmental Sciences,2017,12:31-38.
[15] WARDHANI E,ROOSMINI D,NOTODARMOJO S.Status of heavy metal in sediment of Saguling Lake,West Java[C]//IOP Conference Series:Earth and Environmental Science,2017.
[16] RAJESHKUMAR S,LIU Yang,ZHANG Xiangyang,et al.Studies on seasonal pollution of heavy metals in water,sediment,fish and oyster from the Meiliang Bay of Taihu Lake in China[J].Chemosphere,2018,191(4):626-638.
[17] MAKOKHA V A,QI Yueling,SHEN Yun,et al. Concentrations,distribution,and ecological risk assessment of heavy metals in the East Dongting and Honghu Lake,China[J]. Exposure and Health,2016,8(1):31-41.
[18] HU Cong,DENG Zhengmiao,XIE Yonghong,et al. The risk assessment of sediment heavy metal pollution in the east Dongting Lake wetland[J].Journal of Chemistry,2015,2015(15):1-8.
[19] LI Fei,HUANG Jinhui,ZENG Guangming,et al.Integrated source apportionment,screening risk assessment,and risk mapping of heavy metals in surface sediments:a case study of the Dongting Lake,Middle China[J]. Human and Ecological Risk Assessment:An International Journal,2014,20(5):1213-1230.
[20] YAO Zhigang,BAO Zhengyu,GAO Pu.Environmental assessments of trace metals in sediments from Dongting Lake,Central China[J].Journal of China University of Geosciences,2006,17(4):310-319.
[21]张光贵,田琪,郭晶.洞庭湖表层沉积物重金属中生态风险及其变化趋势研究[J].生态毒理学报,2015,10(3):184-191.ZHANG Guanggui,TIAN Qi,GUO Jing.Heavy metal ecological risk of surface sediments in Dongting Lake and its trend[J]. Asian Journal of Ecotoxicology,2015,10(3):184-191.
[22]李芬芳,符哲,李利强,等.洞庭湖表层沉积物重金属污染状况评估[J].环境化学,2017,36(11):2462-2471.LI Fenfang,FU Zhe,LI Liqiang,et al. Assessment on heavy metal pollution in the surface sediments of Dongting Lake[J].Environmental Chemistry,2017,36(11):2462-2471.
[23] HAKANSON L. An ecological risk index for aquatic pollution control:a sedimentological approach[J]. Water Research,1980,14(8):975-1001.
[24]李健,曾北危,姚岳云,等.洞庭湖水系水体环境背景值调查研究[J].环境科学,1986,7(4):62-68.LI Jian, ZENG Beiwei, YAO Yueyun, et al. Studies on environmental background levels in waters of Dongting Lake system[J].Environmental Science,1986,7(4):62-68.
[25]刘婉清,倪兆奎,吴志强,等.江湖关系变化对鄱阳湖沉积物重金属分布及生态风险影响[J].环境科学,2014,35(5):1750-1758.LIU Wanqing,NI Zhaokui,WU Zhiqiang,et al. Influence of the river-lake relation change on the distribution of heavy metal and ecological risk assessment in the surface sediment of Poyang Lake[J].Environmental Science,2014,35(5):1750-1758.
[26]滑丽萍,华珞,高娟,等.中国湖泊底泥的重金属污染评价研究[J].土壤,2006,38(4):366-373.HUA Liping,HUA Luo,GAO Juan,et al. Heavy metal pollution of sediments of lakes in China[J].Soils,2006,38(4):366-373.
[27]田琪,张光贵,谢意南,等.洞庭湖主要入湖口表层沉积物重金属分布特征与生态风险评价[J].生态毒理学报,2017,12(2):191-200.TIAN Qi,ZHANG Guanggui,XIE Yinan,et al. Distribution and ecological risk assessment of heavy metals in surface sediments from main tributary entrances of Dongting Lake[J]. Asian Journal of Ecotoxicology,2017,12(2):191-200.
[28]万群,李飞,祝慧娜,等.东洞庭湖沉积物中重金属的分布特征、污染评价与来源辨析[J].环境科学研究,2011,24(12):1378-1384.WAN Qun,LI Fei,ZHU Huina,et al. Distribution characteristics,pollution assessment and source identification of heavy metals in the sediment of East Dongting Lake[J]. Research of Environmental Sciences,2011,24(12):1378-1384.
[29] YAO Zhigang,BAO Zhengyu,ZHOU Lifa,et al. A statistical approach for determining the environment impact of surface sediments from the Dongting Lake area,Central China[J]. Chinese Journal of Geochemistry,2009,28(1):79-104.
[30] MAO Longjiang,MO Duowen,GUO Yuanyuan,et al. Multivariate analysis of heavy metals in surface sediments from lower reaches of the Xiangjiang River,southern China[J]. Environmental Earth Sciences,2013,69(3):765-771.
[31] KENDALL M. Rand correlation methods[M]. London:Charles Criffin,1975.
[32] MANN H B. Nonparametric tests against trend[J]. Econometrica,1945,13(3):245-259.
[33] LIU Changming,ZHENG Hongxing.Changes in components of the hydrological cycle in the Yellow River Basin during the second half of the 20thcentury[J]. Hydrological Processes,2004,18(12):2337-2345.
[34]姚志刚,鲍征宇,高璞.洞庭湖沉积物重金属环境地球化学[J].地球化学,2006,35(6):629-638.YAO Zhigang,BAO Zhengyu,GAO Pu.Environmental geochemistry of heavy metals in sediments of Dongting Lake[J]. Geochimica,2006,35(6):629-638.
[35]童霆.河口三角洲元素含量与矿产资源:以湘资沅澧为例[J].第四纪研究,2005,25(3):298-305.TONG Ting. Element concentrations in river delta sediments and mineral resources potential in the drainage basin:a case study in the Xiangjiang,Zishui,Yuanjiang,and Lishui rivers basins[J].Quaternary Sciences,2005,25(3):298-305.
[36]湖南省国土委员会办公室,湖南省经济研究中心.洞庭湖区整治开发综合考察研究专题报告[R].长沙:湖南省国土委员会办公室,1985.
[37]童霆.洞庭湖的净化作用与微量元素资源[J].中国地质,1998(10):33-36.TONG Ting. Purifying and minor element mineral resources in the Dongting Lake[J].Geology in China,1998(10):33-36.
[38]卜跃先,陆强国,谭建强.洞庭湖水质污染状况与综合评价[J].人民长江,1997,28(2):40-43.PU Yuexian,LU Qiangguo,TAN Jianqiang.Water pollution status in Dongting Lake and its comprehensive assessment[J]. Yangtze River,1997,28(2):40-43.
[39]杨国兵.洞庭湖水质污染状况及综合评价[C]//中国水利学会2003学术年会论文集.北京:中国水利学会,2003:633-636.
[40]申锐莉,鲍征宇,周旻,等.洞庭湖湿地水相中重金属的地球化学评价[J].人民长江,2007(11):121-123.
[41]毕斌.洞庭湖水环境中重金属污染特征、赋存形态及其源解析[D].临汾:山西师范大学,2017.
[42]卢宏玮,曾光明,何理.洞庭湖流域水体污染物变化趋势及风险分析[J].水土保持通报,2004,24(2):12-16.LU Hongwei,ZENG Guangming,HE Li.Changing tendency and risk of water contamination in Dongting Lake watershed[J]. Bulletin of Soil and Water Conservation,2004,24(2):12-16.
[43]申锐莉,张建新,鲍征宇,等.洞庭湖水质评价(2002—2004年)[J].湖泊科学,2006,18(3):243-249.SHEN Ruili,ZHANG Jianxin,BAO Zhengyu,et al. Water quality assessment in Lake Dongting(2002-2004),China[J]. Journal of Lake Sciences,2006,18(3):243-249.
[44]张光贵,谢意南,莫永涛.洞庭湖典型水域表层沉积物中重金属空间分布特征及其潜在生态风险评价[J].环境科学研究,2015,28(10):1545-1552.ZHANG Guanggui,XIE Yinan,MO Yongtao. Spatial distribution characteristics and potential ecological risk assessment of heavy metals in typical water surface sediments of Dongting Lake[J].Research of Environmental Sciences,2015,28(10):1545-1552.
[45]施汶妤.长江中下游四大沿江湖泊沉积物记录的全新世环境变化及其对比分析[C]//中国地理学会百年庆典学术论文摘要集.北京:中国地理学会,2009:35.
[46]来红州,莫多闻,苏成.洞庭湖演变趋势探讨[J].地理研究,2004,23(1):78-86.LAI Hongzhou,MO Duowen,SU Cheng. Discussion on the evolutionary trend of Lake Dongting[J]. Geographical Research,2004,23(1):78-86.