Distribution characteristics and ecological risk assessment of nitrogen, phosphorus and heavy metals in sediments of typical inland lakes: A case study of Wuhu Lake in Wuhan
HE Jun1, LI Fulin1, TAO Liang2, ZHANG Ao1, ZHAO Yongbo1
1. Wuhan Center, China Geological Survey, Hubei Wuhan 430205, China; 2. Wuhan Geomatics Institute, Hubei Wuhan 430022, China
Abstract：Urban inland lake wetland is important for urban ecosystem. The authors in this paper have taken Wuhu Lake of Wuhan as an example to evaluate distribution characteristics, influencing factors, enrichment pollution degree and ecological risk of nitrogen, phosphorus, organic matter and heavy metals in surface sediments by mathematical statistics, nutrient index, geoaccumulation index and potential ecological risk. The results show that the contents of total nitrogen, total phosphorus and organic matter in the surface sediments in the northwest of Wuhu Lake were significantly higher than those in the southeast. The surface runoff and farmland may be main sources of nutrients around Wuhu Lake, and the paddy field was more conducive to the enrichment of total phosphorus in sedimentary. The mixed sources of organic matter in the sedimentary were endogenous aquatic plants and exogenous terrestrial plants, displaying a significant positive correlation with total nitrogen. The content of heavy metals in the sedimentary was generally low, with high Cd content in local parts, and the content is generally higher in the north than in the south. The enrichment and potential risk of heavy metals in sedimentary were generally low, with low enrichment of Cd and Pb in local parts and moderate potential risks of Cd and Hg. The potential ecological risk of sedimentary was low to medium, and the distribution of potential ecological risk is highly consistent with content of Cd in sedimentary.
何军, 李福林, 陶良, 张傲, 赵永波. 典型内陆湖泊沉积物氮、磷和重金属分布特征及生态风险评价——以武汉市武湖为例[J]. 中国地质调查, 2022, 9(2): 110-118.
HE Jun, LI Fulin, TAO Liang, ZHANG Ao, ZHAO Yongbo. Distribution characteristics and ecological risk assessment of nitrogen, phosphorus and heavy metals in sediments of typical inland lakes: A case study of Wuhu Lake in Wuhan. , 2022, 9(2): 110-118.
[1] Munishi S,Jewitt G.Degradation of Kilombero Valley Ramsar wetlands in Tanzania[J].Phys Chem Earth,2019,112:216-227. [2] Shen G,Yang X C,Jin Y X,et al.Remote sensing and evaluation of the wetland ecological degradation process of the Zoige Plateau Wetland in China[J].Ecol Indic,2019,104:48-58. [3] 朱香英,梁亚荣.武汉市湖泊侵占现状分析与洪涝灾害[J].环境保护科学,2017,43(4):102-107. Zhu X Y,Liang Y R.Analysis of the current situation of lake encroachment and flood disaster in Wuhan City[J].Environ Prot Sci,2017,43(4):102-107. [4] 陈海珍,石铁柱,邬国锋.武汉市湖泊景观动态遥感分析(1973—2013年)[J].湖泊科学,2015,27(4):745-754. Chen H Z,Shi T Z,Wu G F.The dynamic analysis of lake landscape of Wuhan City in recent 40 years[J].J Lake Sci,2015,27(4):745-754. [5] Liu M,Chen J B,Sun X S,et al.Accumulation and transformation of heavy metals in surface sediments from the Yangtze River estuary to the East China Sea shelf[J].Environ Pollut,2019,245:111-121. [6] Huang B,Guo Z H,Xiao X Y,et al.Changes in chemical fractions and ecological risk prediction of heavy metals in estuarine sediments of Chunfeng Lake estuary,China[J].Mar Pollut Bull,2019,138:575-583. [7] 马舒欣,乔永民,唐梦瑶,等.广州市主要湖泊沉积物重金属污染与生态风险评价[J].生态与农村环境学报,2019,35(5):600-607. Ma S X,Qiao Y M,Tang M Y,et al.Heavy metal pollution and potential ecological risk assessment in surface sediments from lakes located in Guangzhou City[J].J Ecol Rural Environ,2019,35(5):600-607. [8] Mortimer C H.The exchange of dissolved substances between mud and water in lakes[J].J Ecol,1941,29(2):280-329. [9] Koski-Vähälä J,Hartikainen H,Tallberg P.Phosphorus mobilization from various sediment pools in response to increased pH and silicate concentration[J].J Environ Qual,2001,30(2):546-552. [10] Mohiuddin K M,Zakir H M,Otomo K,et al.Geochemical distribution of trace metal pollutants in water and sediments of downstream of an urban river[J].Int J Environ Sci Technol,2010,7(1):17-28. [11] 苏春利,王焰新.武汉市墨水湖沉积物重金属污染特征与防治对策[J].矿物岩石,2006,26(2):111-116. Su C L,Wang Y X.Pollutant characteristics and pollution control of heavy metal contaminants in sediments of Moshui Lake,Wuhan,China[J].J Mineral Petrol,2006,26(2):111-116. [12] 王永华,钱少猛,徐南妮,等.巢湖东区底泥污染物分布特征及评价[J].环境科学研究,2004,17(6):22-26. Wang Y H,Qian S M,Xu N N,et al.Characteristics of distribution of pollutants and evaluation in sediment in the east area of Chaohu Lake[J].Res Environ Sci,2004,17(6):22-26. [13] Karthikeyan P,Vennila G,Nanthakumar G,et al.Dataset for spatial distribution and pollution indices of heavy metals in the surface sediments of Emerald Lake,Tamil Nadu,India[J].Data Brief,2020,28:104877. [14] Kostka A,Lésniak A.Spatial and geochemical aspects of heavy metal distribution in lacustrine sediments,using the example of lake Wigry (Poland)[J].Chemosphere,2020,240:124879. [15] 杨水化,彭正洪,焦洪赞,等.城市富营养化湖泊的外源污染负荷与贡献解析——以武汉市后官湖为例[J].湖泊科学,2020,32(4):941-951. Yang S H,Peng Z H,Jiao H Z,et al.External pollution source load and contribution of urban eutrophic lakes:Taking Lake Houguanhu of Wuhan as an example[J].J Lake Sci,2020,32(4):941-951. [16] 姜庆虎,刘艳芳,黄浦江,等.城市湖泊流域面源污染的源-汇效应研究——以武汉市东湖为例[J].生态环境学报,2013,22(3):469-474. Jiang Q H,Liu Y F,Huang P J,et al.The source-sink effect between urban diffuse pollution and lake watershed:A case study in East Lake of Wuhan[J].Ecol Environ Sci,2013,22(3):469-474. [17] 万玲,洪军,谷静丽.武汉市江汉区湖泊的水质分析[J].环境科学与技术,2013,36(12):424-427. Wan L,Hong J,Gu J L.The analysis of the quality of the lakes in Jianghan district of Wuhan city[J].Environ Sci Technol,2013,36(12):424-427. [18] 吴来燕,薛怀军,何文豪,等.武汉市菱角湖沉积物中营养元素的分布特征[J].中南民族大学学报:自然科学版,2015,34(3):22-24. Wu L Y,Xue H J,He W H,et al.The distribution of nitrogen and posphorus in the sediment of Lingjiaohu Lake in Wuhan[J].J South-Central Univ Natl:Nat Sci Ed,2015,34(3):22-24. [19] 唐阵武,程家丽,岳勇,等.武汉典型湖泊沉积物中重金属累积特征及其环境风险[J].湖泊科学,2009,21(1):61-68. Tang Z W,Cheng J L,Yue Y,et al.Accumulations and risks of heavy metals in the sediments from 8 typical lakes in Wuhan,China[J].J Lake Sci,2009,21(1):61-68. [20] 刘心愿,朱勇辉,姚仕明,等.湖泊分蓄洪区洪水风险图编制探讨——以湖北武湖、涨渡湖为例[J].人民长江,2017,48(14):9-11,22. Liu X Y,Zhu Y H,Yao S M,et al.Discussion on flood risk mapping for flood diversion and storage area:Case of Wuhu and Zhangduhu Lakes area,Hubei Province[J].Yangtze River,2017,48(14):9-11,22. [21] 张淑倩,孔令阳,邓绪伟,等.江汉湖群典型湖泊生态系统健康评价——以梁子湖、洪湖、长湖、斧头湖、武湖为例[J].环境科学学报,2017,37(9):3613-3620. Zhang S Q,Kong L Y,Deng X W,et al.Assessment of ecosystem health of typical lake wetland in the Jianghan lake group:A case study of Liangzi Lake,Honghu Lake,Changhu Lake,Futou Lake and Wuhu Lake[J].Acta Sci Circumst,2017,37(9):3613-3620. [22] Muller C.Sediment index[J].Chemiker Zeitung,1981,105:53-58. [23] 李姗姗,谭光超,彭晓晨,等.重要风险区域土壤重金属污染特征及来源分析[J].资源环境与工程,2019,33(4):495-498. Li S S,Tan G C,Peng X C,et al.Analysis of characteristics and sources of heavy metal pollution in soil in major risk areas[J].Resour Environ Eng,2019,33(4):495-498. [24] Hakanson L.An ecological risk index for aquatic pollution control.A sedimentological approach[J].Water Res,1980,14(8):975-1001. [25] 冀文豪.长江中游湖泊表层沉积物碳氮特征及来源研究[D].合肥:安徽农业大学,2017. Ji W H.Characters of Carbon and Nitrogen and Sources Analysis of Surface Sediments from Lakes in the Middle of Yantze River[D].Hefei:Anhui Agricultural University,2017. [26] 童文彬,杨良觎,章明奎.浙江省红壤丘陵区旱地与水田土壤肥力的比较研究[J].江西农业学报,2019,31(4):46-50. Tong W B,Yang L Y,Zhang M K.Comparative study on soil fertility between upland and paddy field in red soil hilly region of Zhejiang province[J].Acta Agric Jiangxi,2019,31(4):46-50. [27] 郭泌汐,刘勇勤,张凡,等.西藏湖泊沉积物重金属元素特征及生态风险评估[J].环境科学,2016,37(2):490-498. Guo B X,Liu Y Q,Zhang F,et al.Characteristics and risk assessment of heavy metals in core sediments from lakes of Tibet[J].Environ Sci,2016,37(2):490-498. [28] 蔡金傍,李文奇,刘娜,等.洋河水库底泥污染特性研究[J].农业环境科学学报,2007,26(3):886-893. Cai J B,Li W Q,Liu N,et al.Characteristics of contaminated sedi-ments in Yanghe Reservoir[J].J Agro-Environ Sci,2007,26(3):886-893. [29] 刘丽娜,马春子,张靖天,等.东北典型湖泊沉积物氮磷和重金属分布特征及其污染评价研究[J].农业环境科学学报,2018,37(3):520-529. Liu L N,Ma C Z,Zhang J T,et al.Distribution characteristics of pollution from nitrogen,phosphorus,and heavy metals in sediments of shankou lake in northeast China[J].J Agro-Environ Sci,2018,37(3):520-529.
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