2021-2022年鄱阳湖丰水期水体富营养化指标空间分布数据集

A dataset of spatial distribution of water eutrophication indicators in Poyang Lake during high flow period from 2021 to 2022

鄱阳湖是长江流域最大的通江湖泊,对维持长江流域生态功能具有举足轻重的作用。然而随着气候变化和人类活动的共同影响,其富营养化程度逐年增加,生态功能逐渐恶化。为研究鄱阳湖富营养化的时空变化特征,保护鄱阳湖水资源、水环境安全,于2021年和2022年夏季藻类生长高峰期基于野外采样规范均匀采集了鄱阳湖湖体72个点位的水样,在实验室严格按照国标和行业标准规定的方法完成了采样点水体富营养化指标总氮、总磷、高锰酸盐指数和叶绿素的测定,形成了鄱阳湖2021-2022年丰水期水体富营养化指标空间分布数据集。本数据集产品可准确表征鄱阳湖丰水期水体污染状况、富营养化状态及其在空间上的分布特征,对鄱阳湖流域污染管控,长江流域水环境保护具有重要的数据支撑意义。

Poyang Lake,the largest lake connected to the Yangtze River,plays an important role in preserving the ecological balance of the Yangtze River Basin.However,due to the escalating effects of climate change and human activities,the eutrophication status of the lake has been increasing year by year,resulting in a gradual deterioration of its ecological function.In order to study the spatio-temporal variation characteristics of eutrophication in Poyang Lake and protect its water resources and environment,wesystematically collected water samples from 72 sites across the lake during the peak algae growth periods of the summers from 2021 to 2022.In the laboratory,the determination of eutrophication indicators,including total nitrogen,total phosphorus,permanganate index and chlorophyll-a at sampling sites was conducted in strict accordance with the methods stipulated by national standards and industrial standards.Based on this,we obtained the dataset of spatial distribution of water eutrophication indicators in Poyang Lake during high flow period from 2021 to 2022.This dataset can provide precise insights into the water pollution and eutrophication status,as well as the spatial distribution characteristics of Poyang Lake during high flow season,which has important data supporting significance for the pollution control of Poyang Lake basin and water environment protection of the Yangtze River basin.