| Understanding the changes of optically active substances (OACs) in Hulun Lake in the past 35 years and its indication to the degradation of aquatic ecology | |
Zhang, Hao1,2 ; Yao B(姚波)3; Wang, Shengrui1,2; Huang, Yuqi1,2
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| Corresponding Author | Wang, Shengrui(wangsr@bnu.edu.cn) |
| Source Publication | JOURNAL OF CLEANER PRODUCTION
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| 2022-12-01 | |
| Volume | 377Pages:18 |
| ISSN | 0959-6526 |
| Abstract | Lake eutrophication and ecological degradation are among the most serious environmental problems in the world and identifying changes in key water quality parameters and associated drivers is critical for lake man-agement. Optically active substances (OACs) are important water quality indicators that affect lake water ecology and evaluate lake eutrophication. Climate change and human activities are important factors driving the changes of OACs in lakes. Understanding how and why OACs varies in long-term trend in response to different influencing factors and its driving mechanism is needed to understand. In this study, based on the Landsat series satellite data, this study investigated the historical changes of OACs in Hulun Lake, quantitatively explained the response relationship of OACs to meteorological, hydrological and human activity elements, and discussed their indicative role in the degradation of water ecology. The results showed that during 1986-2020, OACs had obvious periodic changes; from 1986 to 1999, Chla, CDOM and TSM are relatively stable at lower values; during 2000-2009, the concentration of total suspended matter (TSM) and coloured dissolved organic matter (CDOM) increased, and the concentration of chlorophyll a (Chla) decreased; during 2010-2020 The annual TSM and CDOM concentration decreased, and the Chla concentration increased. The results showed that among the hy-drometeorological and anthropogenic variables selected to explain changes in the OAC, gross domestic product (GDP) is the key factor influencing changes in the OACs, explaining 39.3%, 71.8% and 60.6% of the changes in Chla, CDOM and TSM, respectively. Air temperature (AT) can explain 24.0% of the variation in Chla, evapo-transpiration (Eva) can explain 19.1% and 5.52% of the variation in CDOM and TSM, and precipitation (P) can explain 13.8% and 7.5% of the variation in Chla and TSM. Water level is an important pathway affecting OACs in Hulun Lake, explaining 50.7% of the variation in CDOM, 48.0% of the variation in TSM and 23.1% of the variation in Chla. Warming and drought in the Hulun Lake basin and human activities ultimately lead to changes in OACs. Finally, a pattern diagram to assess the degree of ecological degradation of lake was proposed. This study has substantial implications to monitor and assess the ecological degradation status of lake and maintain the sustainable development of lakes in cold and arid regions. |
| Keyword | Optically active substance Driving mechanism Ecological degradation Indication Hulun lake |
| DOI | 10.1016/j.jclepro.2022.134286 |
| Indexed By | SCI ; EI |
| Language | 英语 |
| WOS ID | WOS:000876686700001 |
| WOS Keyword | DISSOLVED ORGANIC-MATTER ; CHLOROPHYLL-A ; CDOM ABSORPTION ; EUTROPHIC LAKE ; CLIMATE-CHANGE ; WATER CLARITY ; NUTRIENT ; LANDSAT ; PHYTOPLANKTON ; LIGHT |
| WOS Research Area | Science & Technology - Other Topics ; Engineering ; Environmental Sciences & Ecology |
| WOS Subject | Green & Sustainable Science & Technology ; Engineering, Environmental ; Environmental Sciences |
| Funding Project | National Key Research and Development Project of China ; Guangdong -Hong Kong Joint Laboratory for Water Security ; National High-level Personnel of Special Support Program (People Plan) ; [2019YFC0409201] ; [2020B1212030005] ; [312232102] |
| Funding Organization | National Key Research and Development Project of China ; Guangdong -Hong Kong Joint Laboratory for Water Security ; National High-level Personnel of Special Support Program (People Plan) |
| Classification | 一类 |
| Ranking | 2 |
| Contributor | Wang, Shengrui |
| Citation statistics | |
| Document Type | 期刊论文 |
| Identifier | http://dspace.imech.ac.cn/handle/311007/90670 |
| Collection | 流固耦合系统力学重点实验室 |
| Affiliation | 1.Beijing Normal Univ, Ctr Water Res, Guangdong Hong Kong Joint Lab Water Secur, Zhuhai 519087, Guangdong, Peoples R China; 2.Beijing Normal Univ, Coll Water Sci, Engn Res Ctr, Minist Educ Groundwater Pollut Control & Remediat, Beijing 100875, Peoples R China; 3.Chinese Acad Sci, Inst Mech, Key Lab Mech Fluid Solid Coupling Syst, Beijing 100190, Peoples R China |
| Recommended Citation GB/T 7714 | Zhang, Hao,Yao B,Wang, Shengrui,et al. Understanding the changes of optically active substances (OACs) in Hulun Lake in the past 35 years and its indication to the degradation of aquatic ecology[J]. JOURNAL OF CLEANER PRODUCTION,2022,377:18. |
| APA | Zhang, Hao,姚波,Wang, Shengrui,&Huang, Yuqi.(2022).Understanding the changes of optically active substances (OACs) in Hulun Lake in the past 35 years and its indication to the degradation of aquatic ecology.JOURNAL OF CLEANER PRODUCTION,377,18. |
| MLA | Zhang, Hao,et al."Understanding the changes of optically active substances (OACs) in Hulun Lake in the past 35 years and its indication to the degradation of aquatic ecology".JOURNAL OF CLEANER PRODUCTION 377(2022):18. |
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