| 赣江尾闾地区鄱阳湖湖汊健康状况评价 |
| Health Status Evaluation of Poyang Lake Branches in Lower Reaches of Ganjiang River |
| 投稿时间：2019-09-11 修订日期：2019-12-28 |
| DOI：10.15928/j.1674-3075.201909110230 |
| 中文关键词:赣江尾闾地区 鄱阳湖湖汊 健康状态 健康评价 |
| 英文关键词:the lower reaches of Ganjiang River Poyang Lake branches health status health evaluation |
| 基金项目:国家重点研发计划项目(2016YFC0402404)；江西省水利厅科研项目(2017-009） |
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| 中文摘要: |
| 评价赣江尾闾地区鄱阳湖湖汊的健康状况，为鄱阳湖水生态修复和湖泊生态系统功能的提升提供科学的管理依据，并为尾闾地区水系综合整治工程提供指导。选择基础水面面积在3.0 km2以上的7个湖汊，每个湖汊设置1个监测点，2017年2月-2019年2月每月监测1次。评价指标包括水质达标率、浮游植物、湖汊形态结构变化和用水保证率。熵权法评价湖汊生态健康状态，突变级数法评价湖汊功能健康状态，综合健康指数评价湖汊整体健康状态。结果表明：赣江湖汊生态健康及水功能健康均随季节变化而变化，水环境是湖汊生态健康评价的重要指标，其权重达到0.5以上；2018年湖汊健康状态好于2017年，同一评价年度内综合健康状态为夏季好于秋季好于冬季好于春季，各湖汊综合健康状态有明显的空间差异；南支所属湖汊综合健康状态优于中支和北支，湖汊水面面积大小及季节变化是影响综合健康状态的主要因素。通过水系连通等工程措施进行精准调控可提升湖汊综合健康状态。 |
| 英文摘要: |
| The lake area of Poyang Lake varies greatly with season and have many branches in dry season that connect with Poyang Lake when the water level is high and separate into separate lakes when the water level is low. The health status of the Poyang Lake branches is of great significance for the health of Poyang Lake and the ecosystem services the lake provides. In this study, the health of Poyang Lake branches was evaluated in the lower reaches of Ganjiang River, aiming to provide a scientific basis for ecological restoration and improvement of ecosystem functions provided by Poyang Lake, and to provide guidance for improvement projects on the lower reaches of Ganjiang River. Seven lake branches with water surface areas of more than 3 km2 were selected for the study, and the lake ecosystem was monitored monthly at one monitoring point on each lake branch from February 2017 to February 2019. The evaluation index system included water quality compliance rate, phytoplankton, morphological structure changes of the branch and the water supply guarantee rate. For each lake branch, the entropy weight method was used to evaluate its ecological health, the mutation progression method was used to evaluate the functional health, and the comprehensive health index was applied to evaluate the overall health. Results show that the ecological health and water function health of the Ganjiang River branches varied with season. The water environment was an important index for evaluating the ecological health of a lake branch, with an index weight higher than 0.5. The health status of the lake branches in 2018 was better than in 2017, and the health status within a year was in the order, summer >autumn>winter > spring. In addition, the comprehensive health status presented obvious spatial variation and the comprehensive health status of the southern branch was better than that of the middle and the northern branches. Water surface area and season were the primary factors affecting the comprehensive health status of the southern branch. In general, the comprehensive health status of the lake branches can be improved by precise control of engineering measures such as water system connectivity projects. |
| 刘伟佳,邹大胜,裴青宝.2021.赣江尾闾地区鄱阳湖湖汊健康状况评价[J].水生态学杂志,42(2):1-7. |
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