Characteristics and environmental significance of organic carbon deposition in Baiyangdian Lake, China, 1969–2020
Lake sediments provide a basis for ecological information that can reconstruct the history of a lake ecosystem and clarify the carbon sink process. We combined chronological information relating to sediment cores in Baiyangdian Lake with the history of human activities, to examine the influence of t...
| Main Authors: | , , , , , |
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| Language: | English |
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Elsevier
2023-12-01
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| Series: | Ecological Indicators |
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| Online Access: | http://www.sciencedirect.com/science/article/pii/S1470160X23013559 |
| _version_ | 1797422655534530560 |
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| author | Hongchen Bian Hao Guo Wenqiang Zhang Qi Li Shaoyuan Bai Baoqing Shan |
| author_facet | Hongchen Bian Hao Guo Wenqiang Zhang Qi Li Shaoyuan Bai Baoqing Shan |
| author_sort | Hongchen Bian |
| collection | DOAJ |
| description | Lake sediments provide a basis for ecological information that can reconstruct the history of a lake ecosystem and clarify the carbon sink process. We combined chronological information relating to sediment cores in Baiyangdian Lake with the history of human activities, to examine the influence of the natural environment and human activities on the humification of organic carbon. This analysis revealed the evolution of the ecological environment in the lake over the past 50 years. The results showed the average deposition rate of sediments to be 0.957 cm/a; with the total organic carbon and total nitrogen contents of sediments ranging from 14.32 to 333.19 g/kg and from 0.95 to 26.90 g/kg, respectively. The δ13C values ranged from −13.04 ‰ to −29.07 ‰, while the δ15N values ranged from −1.43 ‰ to 8.37 ‰. The fulvic acid carbon (FAC) content ranged from 0.52 g/kg to 14.21 g/kg, and the humic acid carbon (HAC) content ranged from 1.67 g/kg to 23.82 g/kg. The HAC/FAC value gradually increased as the sediment deepend. The results of each index in the sedimentary column, combined with the dating information, allowed us to conclude that, from 1969 to 1985, human activities had little effect on the lake, and the source of organic carbon and the humification process remained stable. During this period, the water purification function of the lake continued to improve. From 1985 to 2014, the surrounding economy developed rapidly, resulting in significant changes in the lake's ecological structure and the distribution of lake plants. Serious eutrophication occurred, leading to increased pollution Between 2014 and 2020, the lake protection measures implemented achieved initial positive results. During the period, the source of organic carbon and the humification process stabilized, eutrophication was alleviated, and the burial and fixation of organic carbon gradually reached a healthier state. |
| first_indexed | 2024-03-09T07:36:30Z |
| format | Article |
| id | doaj.art-ad2a5d45826c484e8988492b2f51d3d3 |
| institution | Directory Open Access Journal |
| issn | 1470-160X |
| language | English |
| last_indexed | 2024-03-09T07:36:30Z |
| publishDate | 2023-12-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Ecological Indicators |
| spelling | doaj.art-ad2a5d45826c484e8988492b2f51d3d32023-12-03T05:40:00ZengElsevierEcological Indicators1470-160X2023-12-01157111213Characteristics and environmental significance of organic carbon deposition in Baiyangdian Lake, China, 1969–2020Hongchen Bian0Hao Guo1Wenqiang Zhang2Qi Li3Shaoyuan Bai4Baoqing Shan5State Key Laboratory on Environmental Aquatic Chemistry, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, P.O. Box 2871, Beijing 100085, PR ChinaTechnical Centre for Soil, Agriculture and Rural Ecology and Environment, Ministry of Ecology and Environment, No.8, Dayangfang, Beijing 100012, PR ChinaState Key Laboratory on Environmental Aquatic Chemistry, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, P.O. Box 2871, Beijing 100085, PR China; Corresponding author.State Key Laboratory on Environmental Aquatic Chemistry, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, P.O. Box 2871, Beijing 100085, PR ChinaCollege of Materials Science and Engineering, Guilin University of Technology, Guilin 541004, PR ChinaState Key Laboratory on Environmental Aquatic Chemistry, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, P.O. Box 2871, Beijing 100085, PR ChinaLake sediments provide a basis for ecological information that can reconstruct the history of a lake ecosystem and clarify the carbon sink process. We combined chronological information relating to sediment cores in Baiyangdian Lake with the history of human activities, to examine the influence of the natural environment and human activities on the humification of organic carbon. This analysis revealed the evolution of the ecological environment in the lake over the past 50 years. The results showed the average deposition rate of sediments to be 0.957 cm/a; with the total organic carbon and total nitrogen contents of sediments ranging from 14.32 to 333.19 g/kg and from 0.95 to 26.90 g/kg, respectively. The δ13C values ranged from −13.04 ‰ to −29.07 ‰, while the δ15N values ranged from −1.43 ‰ to 8.37 ‰. The fulvic acid carbon (FAC) content ranged from 0.52 g/kg to 14.21 g/kg, and the humic acid carbon (HAC) content ranged from 1.67 g/kg to 23.82 g/kg. The HAC/FAC value gradually increased as the sediment deepend. The results of each index in the sedimentary column, combined with the dating information, allowed us to conclude that, from 1969 to 1985, human activities had little effect on the lake, and the source of organic carbon and the humification process remained stable. During this period, the water purification function of the lake continued to improve. From 1985 to 2014, the surrounding economy developed rapidly, resulting in significant changes in the lake's ecological structure and the distribution of lake plants. Serious eutrophication occurred, leading to increased pollution Between 2014 and 2020, the lake protection measures implemented achieved initial positive results. During the period, the source of organic carbon and the humification process stabilized, eutrophication was alleviated, and the burial and fixation of organic carbon gradually reached a healthier state.http://www.sciencedirect.com/science/article/pii/S1470160X23013559Baiyangdian LakeSedimentOrganic carbonLake ecological evolution |
| spellingShingle | Hongchen Bian Hao Guo Wenqiang Zhang Qi Li Shaoyuan Bai Baoqing Shan Characteristics and environmental significance of organic carbon deposition in Baiyangdian Lake, China, 1969–2020 Ecological Indicators Baiyangdian Lake Sediment Organic carbon Lake ecological evolution |
| title | Characteristics and environmental significance of organic carbon deposition in Baiyangdian Lake, China, 1969–2020 |
| title_full | Characteristics and environmental significance of organic carbon deposition in Baiyangdian Lake, China, 1969–2020 |
| title_fullStr | Characteristics and environmental significance of organic carbon deposition in Baiyangdian Lake, China, 1969–2020 |
| title_full_unstemmed | Characteristics and environmental significance of organic carbon deposition in Baiyangdian Lake, China, 1969–2020 |
| title_short | Characteristics and environmental significance of organic carbon deposition in Baiyangdian Lake, China, 1969–2020 |
| title_sort | characteristics and environmental significance of organic carbon deposition in baiyangdian lake china 1969 2020 |
| topic | Baiyangdian Lake Sediment Organic carbon Lake ecological evolution |
| url | http://www.sciencedirect.com/science/article/pii/S1470160X23013559 |
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