长江科学院院报 ›› 2022, Vol. 39 ›› Issue (9): 43-48.DOI: 10.11988/ckyyb.20210578

• 水环境与水生态 • 上一篇    下一篇

基于水质目标的洞庭湖区堤垸生态需水量研究

安秋香1,2, 李洪翔1,2, 黄兵1,2, 黎昔春1,2   

  1. 1.湖南省水利水电勘测设计规划研究总院有限公司,长沙 410007;
    2.洞庭湖水环境治理与生态修复湖南省重点实验室,长沙 410007
  • 收稿日期:2021-06-10 修回日期:2021-08-10 出版日期:2022-09-01 发布日期:2022-09-21
  • 通讯作者: 黄 兵(1981-),男,湖北随州人,正高级工程师,博士研究生,研究方向为水利水电工程规划。E-mail:269058596@qq.com
  • 作者简介:安秋香(1972-),女,湖南益阳人,正高级工程师,硕士,研究方向为水利工程规划。E-mail:728837223@qq.com
  • 基金资助:
    湖南省水利科技计划项目(XSKJ2019081-05,[2017]230-15);湖南省自然科学基金项目(2020JJ5316)

Estimating Ecological Water Demand of Polders in Dongting Lake Area Based on Environmental Dilution Method

AN Qiu-xiang1,2, LI Hong-xiang1,2, HUANG Bing1,2, LI Xi-chun1,2   

  1. 1. Hunan Water Resources and Hydropower Survey, Design, Planning and Research Co., Ltd., Changsha 410007, China;
    2. Hunan Provincial Key Laboratory on Dongting Lake Water Environment Management and Ecological Restoration, Changsha 410007, China
  • Received:2021-06-10 Revised:2021-08-10 Online:2022-09-01 Published:2022-09-21

摘要: 洞庭湖区堤垸众多,垸内水体富营养化严重,水体流通不畅且水文观测资料匮乏,导致垸内生态需水量难以计算。以洞庭湖北部地区25个堤垸为研究对象,以垸内水体3 a后达到Ⅲ类水质为目标,在实地调研和勘查的基础上设置88个地表水水质采样点监测氨氮污染物浓度。基于环境稀释水量法建立了堤垸生态需水量计算模型,经与换水周期法对比分析,得到补水条件下洞庭湖北部地区堤垸生态需水量为32.161亿m3。研究成果对改善洞庭湖区垸内生态环境具有重要参考价值。

关键词: 生态需水量, 水质目标, 环境稀释水量法, 堤垸, 洞庭湖

Abstract: The ecological water demand in the plenty polders of the Dongting Lake are difficult to calculate due to the lack of observation data and inadequate water circulation caused by severe eutrophication. To achieve the goal of reaching grade III water quality in 25 polders in the northern part of Dongting Lake in three years, we arranged 88 surface water sampling points and monitored the concentration of ammonia nitrogen pollutants based on field survey and investigation. By using the environmental dilution method, we established a calculation model for the ecological water demand of polders and obtained the ecological water demand of polders in north Dongting Lake in the presence of water supplement as 3.216 billion m3 in comparison with the result of water exchange cycle method. The research finding is of reference value for improving the ecological environment in polders of the Dongting Lake area.

Key words: ecological water demand, water quality target, environmental dilution method, polder, Dongting Lake

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