{"title":"基于状态变化的浅湖生态水位确定——以白洋淀为例","authors":"Xinyu Liu , Wei Yang , Xianting Fu , Xiaoxiao Li","doi":"10.1016/j.ecohyd.2023.08.014","DOIUrl":null,"url":null,"abstract":"<div><div><span>Water level management is an effective way to promote ecological restoration of shallow lakes. However, efforts to achieve an ecologically suitable water level often emphasize keeping water above the minimum water level and reducing water level fluctuations, but ignore the purpose of maintaining the ecosystem's stability and health. In this paper, we developed a PCLake model to determine the optimal monthly ecological water level with the goals of stably achieving clear water and maintaining ecosystem health. We simulated the regime shifts between eutrophic and oligotrophic in China's Baiyangdian Lake, and determined that the critical P loadings during eutrophication and oligotrophication were 1.57 and 0.835 mg/m</span><sup>2</sup>/day, respectively. The annual and monthly optimal water levels ranged from 7.8 to 8.6 m and from 7.6 to 8.6 m, respectively. Our results provide a scientific basis for the ecological restoration of Baiyangdian Lake.</div></div>","PeriodicalId":56070,"journal":{"name":"Ecohydrology & Hydrobiology","volume":"24 4","pages":"Pages 931-943"},"PeriodicalIF":2.7000,"publicationDate":"2024-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":"{\"title\":\"Determination of the ecological water levels in shallow lakes based on regime shifts: A case study of China's Baiyangdian Lake\",\"authors\":\"Xinyu Liu , Wei Yang , Xianting Fu , Xiaoxiao Li\",\"doi\":\"10.1016/j.ecohyd.2023.08.014\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"<div><div><span>Water level management is an effective way to promote ecological restoration of shallow lakes. However, efforts to achieve an ecologically suitable water level often emphasize keeping water above the minimum water level and reducing water level fluctuations, but ignore the purpose of maintaining the ecosystem's stability and health. In this paper, we developed a PCLake model to determine the optimal monthly ecological water level with the goals of stably achieving clear water and maintaining ecosystem health. We simulated the regime shifts between eutrophic and oligotrophic in China's Baiyangdian Lake, and determined that the critical P loadings during eutrophication and oligotrophication were 1.57 and 0.835 mg/m</span><sup>2</sup>/day, respectively. The annual and monthly optimal water levels ranged from 7.8 to 8.6 m and from 7.6 to 8.6 m, respectively. Our results provide a scientific basis for the ecological restoration of Baiyangdian Lake.</div></div>\",\"PeriodicalId\":56070,\"journal\":{\"name\":\"Ecohydrology & Hydrobiology\",\"volume\":\"24 4\",\"pages\":\"Pages 931-943\"},\"PeriodicalIF\":2.7000,\"publicationDate\":\"2024-12-01\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"0\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"Ecohydrology & Hydrobiology\",\"FirstCategoryId\":\"93\",\"ListUrlMain\":\"https://www.sciencedirect.com/science/article/pii/S164235932300099X\",\"RegionNum\":4,\"RegionCategory\":\"环境科学与生态学\",\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"Q2\",\"JCRName\":\"ECOLOGY\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"Ecohydrology & Hydrobiology","FirstCategoryId":"93","ListUrlMain":"https://www.sciencedirect.com/science/article/pii/S164235932300099X","RegionNum":4,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q2","JCRName":"ECOLOGY","Score":null,"Total":0}
Determination of the ecological water levels in shallow lakes based on regime shifts: A case study of China's Baiyangdian Lake
Water level management is an effective way to promote ecological restoration of shallow lakes. However, efforts to achieve an ecologically suitable water level often emphasize keeping water above the minimum water level and reducing water level fluctuations, but ignore the purpose of maintaining the ecosystem's stability and health. In this paper, we developed a PCLake model to determine the optimal monthly ecological water level with the goals of stably achieving clear water and maintaining ecosystem health. We simulated the regime shifts between eutrophic and oligotrophic in China's Baiyangdian Lake, and determined that the critical P loadings during eutrophication and oligotrophication were 1.57 and 0.835 mg/m2/day, respectively. The annual and monthly optimal water levels ranged from 7.8 to 8.6 m and from 7.6 to 8.6 m, respectively. Our results provide a scientific basis for the ecological restoration of Baiyangdian Lake.
期刊介绍:
Ecohydrology & Hydrobiology is an international journal that aims to advance ecohydrology as the study of the interplay between ecological and hydrological processes from molecular to river basin scales, and to promote its implementation as an integrative management tool to harmonize societal needs with biosphere potential.