| 模型揭示的浅水湖泊稳态转换影响因素分析 |
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| 引用本文： | 邓文文,王荣,刘正文,郑文秀,张晨雪.模型揭示的浅水湖泊稳态转换影响因素分析[J].地球科学进展,2021,36(1):83-94. |
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| 作者姓名： | 邓文文 王荣 刘正文 郑文秀 张晨雪 |
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| 作者单位： | 暨南大学生态学系水生生物研究所,广东 广州 510632;中国科学院南京地理与湖泊研究所,江苏 南京 210008;中国科学院南京地理与湖泊研究所,江苏 南京 210008;暨南大学生态学系水生生物研究所,广东 广州 510632;中国科学院南京地理与湖泊研究所,江苏 南京 210008;中国—丹麦科研教育中心,北京 100190;中国科学院南京地理与湖泊研究所,江苏 南京 210008;中国科学院大学,北京 100049;中国科学院南京地理与湖泊研究所,江苏 南京 210008;安徽师范大学地理与旅游学院,安徽 芜湖 241003 |
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| 基金项目： | 中国科学院南京地理与湖泊研究所“一三五”自主部署项目“气候变化对典型浅水湖泊生态系统弹性的影响及机理”(编号:NIGLAS2017GH01);中国科学院青年创新促进会(编号:Award 2017364)资助。 |
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| 摘 要： | 富营养化会导致浅水湖泊发生稳态转换,生态系统服务严重受损。磷是驱动湖泊发生稳态转换的重要环境因子,探究湖水磷浓度的变化规律是湖泊管理的关键。通过磷动力学模型,从影响湖水磷浓度的主要参数入手,探讨了每种参数变化对磷浓度的具体影响。结合前人研究结果,详细讨论了不同类型气候变化和人类活动对湖泊稳态转换时间、滞后时长、修复速率等的影响。研究认为,气候变化所导致的温度升高、光强减弱、风浪增强等和人类活动所导致的生物扰动、水位波动增强等因素变化虽不会改变湖泊稳态转换突变时间,但会推迟湖泊修复时间,造成突变阈值减小,滞后时间延长,稳态增大。在湖泊保护中要重点考虑主要外力驱动对湖泊稳态转换过程影响的区别,避免有害突变的发生。
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| 关 键 词： | 浅水湖泊 富营养化 稳态转换 磷动力学模型 湖泊修复 |
The Influencing Factors of Critical Transition in Shallow Lakes Revealed by Model |
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| DENG Wenwen,WANG Rong,LIU Zhengwen,ZHENG Wenxiu,ZHANG Chenxue.The Influencing Factors of Critical Transition in Shallow Lakes Revealed by Model[J].Advance in Earth Sciences,2021,36(1):83-94. |
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| Authors: | DENG Wenwen WANG Rong LIU Zhengwen ZHENG Wenxiu ZHANG Chenxue |
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| Institution: | (Department of Ecology and Institute of Hydrobiology,Jinan University,Guangzhou 510632,China;Nanjing Institute of Geography and Limnology,Chinese Academy of Sciences,Nanjing 210008,China;Sino-Danish Center for Education and Research,Beijing 100190,China;University of Chinese Academy of Sciences,Beijing 100049,China;School of Geography and Tourism,Anhui Normal University,Wuhu Anhui 241003,China) |
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| Abstract: | Eutrophication can cause critical transitions in shallow lakes and severely impair ecosystem services.Phosphorus is one of important environmental factors that cause critical transitions in lake ecosystems.Exploring the mechanisms of phosphorus dynamics in lakes is a key to lake management.This paper simulated the phosphorus concentration variations in lakes using a phosphorus kinetic model,and discussed the specific impacts of main model parameters on simulation output.Based on literature reviews,we discussed in detail the effects of different types of climate change and human activities on the critical transition time,hysteresis length,and restoration rate of lakes.The paper indicated that changes in factors such as climate change induced temperature warming,weakened light intensity,increased wind/waves and human activities caused biological disturbances and water level fluctuations would not change the threshold of transition or the time of transition,but would significantly delay the recovery time,decrease the recovery threshold and extend the lag period and the steady state.For the management of lake ecosystems,we suggested that it be important to consider the different impacts from different external perturbations on the process of critical transitions to avoid harmful tipping point. |
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| Keywords: | Shallow lake Eutrophication Critical transition Phosphorus kinetic model Lake restoration |
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