Historical sources and ecological risk trends of typical toxic pollutants in sediments from Taihu Lake, Yangtze Delta, China
The long-term changes of heavy metals (HMs) and polycyclic aromatic hydrocarbons (PAHs) in sediments can reflect the ecological risks (ER) caused by their pollution sources in different historical periods. This is of great significance to the improvement of environmental protection policies in the f...
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| Format: | Article |
| Language: | English |
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Elsevier
2024-02-01
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| Series: | Ecological Indicators |
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| Online Access: | http://www.sciencedirect.com/science/article/pii/S1470160X24001365 |
| _version_ | 1797295808588021760 |
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| author | Ning Li Zhonghua Zhao Lu Zhang Huanchao Zhang Genmei Wang Xuefeng Xie Ke Liu Zhenyi Jia Xinyu Cheng Jiale Wen Yan Li |
| author_facet | Ning Li Zhonghua Zhao Lu Zhang Huanchao Zhang Genmei Wang Xuefeng Xie Ke Liu Zhenyi Jia Xinyu Cheng Jiale Wen Yan Li |
| author_sort | Ning Li |
| collection | DOAJ |
| description | The long-term changes of heavy metals (HMs) and polycyclic aromatic hydrocarbons (PAHs) in sediments can reflect the ecological risks (ER) caused by their pollution sources in different historical periods. This is of great significance to the improvement of environmental protection policies in the future. The study area is located in Taihu Lake, China. 137Cs and 210Pb were used for dating. Indicators related to local socio-economic development were introduced to optimize source identification in the absolute principal component score multiple linear regression (APCS-MLR) model. On this basis, the mean effect range median quotient (M-ERM-Q) method was used to evaluate the ER of source-oriented HMs and PAHs at different ages. The HMs content was relatively stable from 1949 to 2015, and then increased significantly. The PAH contents were on the rise during the whole historical period. The average contribution rate of traffic emission and fertilization to HMs was 50.59 % and 49.41 %. Ecological risk caused by Traffic emitted pollutants was relatively stable before 2015, then increased sharply, and finally reached a medium–high level. However, fertilization ER has always maintained an increasing trend and accelerated after 1980, ultimately reaching medium–low ER. The contribution rates of coal combustion, mixed sources (biomass and coal) and gasoline combustion to PAHs were 13.20 %, 52.45 % and 34.36 %, respectively. The ER of mixed sources and gasoline combustion showed a gradually increasing trend before 2007, and then began to decrease. However, coal combustion ER has been increasing, and the increase accelerated in 2000. Nevertheless, the ER of these three sources was still low. Overall, a certain degree of HMs pollution has been caused by traffic emissions and fertilization in recent years. Local governments should prioritize the control of these two sources to protect the Taihu Lake ecosystem. |
| first_indexed | 2024-03-07T21:53:17Z |
| format | Article |
| id | doaj.art-6f0519dd1f904f55986b086eca6253ff |
| institution | Directory Open Access Journal |
| issn | 1470-160X |
| language | English |
| last_indexed | 2024-03-07T21:53:17Z |
| publishDate | 2024-02-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Ecological Indicators |
| spelling | doaj.art-6f0519dd1f904f55986b086eca6253ff2024-02-25T04:35:08ZengElsevierEcological Indicators1470-160X2024-02-01159111679Historical sources and ecological risk trends of typical toxic pollutants in sediments from Taihu Lake, Yangtze Delta, ChinaNing Li0Zhonghua Zhao1Lu Zhang2Huanchao Zhang3Genmei Wang4Xuefeng Xie5Ke Liu6Zhenyi Jia7Xinyu Cheng8Jiale Wen9Yan Li10Collaborative Innovation Center of Sustainable Forestry, College of Forestry, Nanjing Forestry University, Nanjing, Jiangsu, China; Key Laboratory of Geographic Information Science of the Ministry of Education, School of Geographic Sciences, East China Normal University, Shanghai, ChinaState Key Laboratory of Lake Science and Environment, Nanjing Institute of Geography and Limnology, Chinese Academy of Sciences, Nanjing 210008, China; Corresponding authors at: Collaborative Innovation Center of Sustainable Forestry, College of Forestry, Nanjing Forestry University, Nanjing, Jiangsu, China.State Key Laboratory of Lake Science and Environment, Nanjing Institute of Geography and Limnology, Chinese Academy of Sciences, Nanjing 210008, ChinaCollaborative Innovation Center of Sustainable Forestry, College of Forestry, Nanjing Forestry University, Nanjing, Jiangsu, ChinaCollaborative Innovation Center of Sustainable Forestry, College of Forestry, Nanjing Forestry University, Nanjing, Jiangsu, ChinaKey Laboratory of Watershed Earth Surface Processes and Ecological Security, Zhejiang Normal University, Jinhua, Zhejiang, ChinaCollege of Resources and Environment, Henan University of Economics and Law, Zhengzhou, Henan, ChinaKey Laboratory of Watershed Earth Surface Processes and Ecological Security, Zhejiang Normal University, Jinhua, Zhejiang, ChinaCollaborative Innovation Center of Sustainable Forestry, College of Forestry, Nanjing Forestry University, Nanjing, Jiangsu, China; Key Laboratory of Geographic Information Science of the Ministry of Education, School of Geographic Sciences, East China Normal University, Shanghai, ChinaCollaborative Innovation Center of Sustainable Forestry, College of Forestry, Nanjing Forestry University, Nanjing, Jiangsu, China; Key Laboratory of Geographic Information Science of the Ministry of Education, School of Geographic Sciences, East China Normal University, Shanghai, ChinaCollaborative Innovation Center of Sustainable Forestry, College of Forestry, Nanjing Forestry University, Nanjing, Jiangsu, China; Key Laboratory of Geographic Information Science of the Ministry of Education, School of Geographic Sciences, East China Normal University, Shanghai, China; Corresponding authors at: Collaborative Innovation Center of Sustainable Forestry, College of Forestry, Nanjing Forestry University, Nanjing, Jiangsu, China.The long-term changes of heavy metals (HMs) and polycyclic aromatic hydrocarbons (PAHs) in sediments can reflect the ecological risks (ER) caused by their pollution sources in different historical periods. This is of great significance to the improvement of environmental protection policies in the future. The study area is located in Taihu Lake, China. 137Cs and 210Pb were used for dating. Indicators related to local socio-economic development were introduced to optimize source identification in the absolute principal component score multiple linear regression (APCS-MLR) model. On this basis, the mean effect range median quotient (M-ERM-Q) method was used to evaluate the ER of source-oriented HMs and PAHs at different ages. The HMs content was relatively stable from 1949 to 2015, and then increased significantly. The PAH contents were on the rise during the whole historical period. The average contribution rate of traffic emission and fertilization to HMs was 50.59 % and 49.41 %. Ecological risk caused by Traffic emitted pollutants was relatively stable before 2015, then increased sharply, and finally reached a medium–high level. However, fertilization ER has always maintained an increasing trend and accelerated after 1980, ultimately reaching medium–low ER. The contribution rates of coal combustion, mixed sources (biomass and coal) and gasoline combustion to PAHs were 13.20 %, 52.45 % and 34.36 %, respectively. The ER of mixed sources and gasoline combustion showed a gradually increasing trend before 2007, and then began to decrease. However, coal combustion ER has been increasing, and the increase accelerated in 2000. Nevertheless, the ER of these three sources was still low. Overall, a certain degree of HMs pollution has been caused by traffic emissions and fertilization in recent years. Local governments should prioritize the control of these two sources to protect the Taihu Lake ecosystem.http://www.sciencedirect.com/science/article/pii/S1470160X24001365Taihu lakeSedimentsHeavy metalsPolycyclic aromatic hydrocarbonsEcological risks |
| spellingShingle | Ning Li Zhonghua Zhao Lu Zhang Huanchao Zhang Genmei Wang Xuefeng Xie Ke Liu Zhenyi Jia Xinyu Cheng Jiale Wen Yan Li Historical sources and ecological risk trends of typical toxic pollutants in sediments from Taihu Lake, Yangtze Delta, China Ecological Indicators Taihu lake Sediments Heavy metals Polycyclic aromatic hydrocarbons Ecological risks |
| title | Historical sources and ecological risk trends of typical toxic pollutants in sediments from Taihu Lake, Yangtze Delta, China |
| title_full | Historical sources and ecological risk trends of typical toxic pollutants in sediments from Taihu Lake, Yangtze Delta, China |
| title_fullStr | Historical sources and ecological risk trends of typical toxic pollutants in sediments from Taihu Lake, Yangtze Delta, China |
| title_full_unstemmed | Historical sources and ecological risk trends of typical toxic pollutants in sediments from Taihu Lake, Yangtze Delta, China |
| title_short | Historical sources and ecological risk trends of typical toxic pollutants in sediments from Taihu Lake, Yangtze Delta, China |
| title_sort | historical sources and ecological risk trends of typical toxic pollutants in sediments from taihu lake yangtze delta china |
| topic | Taihu lake Sediments Heavy metals Polycyclic aromatic hydrocarbons Ecological risks |
| url | http://www.sciencedirect.com/science/article/pii/S1470160X24001365 |
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