杭州湾溶解性无机氮、活性磷酸盐营养物基准研究  

Research on Nutritional Criteria of Dissoloved Inorganic Nitrogen and Active Phosphate in Hangzhou Bay

作　　者：魏超 凌佳楠 闫振广[1] 安立会[1] 邓邦平 欧梦圆 郑欣[1] WEI Chao;LING Jianan;YAN Zhenguang;AN Lihui;DENG Bangping;OU Mengyuan;ZHENG Xin(State Key Laboratory of Environmental Criteria and Risk Assessment,Chinese Research Academy of Environmental Sciences,Beijing 100012,China;Southern Marine Science and Engineering Guangdong Laboratory,Zhuhai 528315,China;East China Sea Ecological Center,Ministry of Natural Resources,Key Laboratory of Marine Ecological Monitoring and Restoration Technologies,Shanghai 201206,China;Eco-Environmental Science Research&Design Institute of Zhejiang Province,State Environmental Protection Engineering(Zhejiang)Center for Water Pollution Control,Hangzhou 310007,China)

机构地区：[1]中国环境科学研究院,环境基准与风险评估国家重点实验室,北京100012 [2]南方海洋科学与工程广东省实验室,广州珠海528315 [3]自然资源部东海生态中心,自然资源部海洋生态监测与修复技术重点实验室,上海201206 [4]浙江省生态环境科学设计研究院,国家环境保护水污染控制工程技术(浙江)中心,浙江杭州310007

出　　处：《环境科学研究》2024年第7期1412-1422,共11页Research of Environmental Sciences

基　　金：国家重点研发计划项目(No.2021YFC3101703);南方海洋实验室(珠海)自主科研项目(No.SML2023SP238)。

摘　　要：制定氮磷营养物基准是预防和控制水体富营养化的重要手段。本研究梳理了2010-2022年杭州湾历史监测数据,通过主成分分析、相关性分析等方法筛选了杭州湾营养物基准关键指标,并综合运用频数分布法、压力-响应模型等方法对指标进行统计分析,推导营养物基准值。结果表明:①溶解性无机氮(DIN)和活性磷酸盐(SPR)是制定杭州湾营养物基准的关键营养物指标,其浓度变化直接影响水体的富营养化程度和生态系统的稳定性;Chla和DO则是关键生物学指标,可用于评价水体健康程度。②由于频数分布法和压力-响应模型法的适用性不同,两种方法推导出的杭州湾营养物基准值存在较大差异,由压力响应模型法得出的营养物基准值比频数分布法高。③根据杭州湾目前的水质状况和富营养化水平,本研究提出杭州湾DIN、SPR的基准值分别为0.732和0.033 mg/L。研究显示,采用多种方法联合推导出的营养物基准值更符合水生态保护的实际需求,本研究结果可为杭州湾水体富营养化控制及营养物标准修订提供科学支撑。Establishing nitrogen and phosphorus nutritional criteria is crucial to preventing eutrophication of water bodies.This study screened the historical monitoring data of Hangzhou Bay from 2010 to 2022,used methods such as principal component analysis and correlation analysis to screent key nutrient criteria indicators,and applied comprehensive statistical methods such as frequency step method and pressure-response model,to analyze the indicators and obtain nutritional criteria.The research results show that:(1)Dissoloved inorganic nitrogen and reactive phosphate are key indicators in formulating Hangzhou Bay nutrient criteria and directly affect the eutrophication of water bodies and the stability of ecosystems.In addition,chlorophyll a and dissolved oxygen are important biological indicators for assessing the health of water bodies.(2)We observed significant differences in the nutrient criterion values derived from the frequency step method and the pressure-response model,with the latter yielding higher values.(3)Based on the current water quality and eutrophication level of Hangzhou Bay,nutrient criteria values were proposed(0.732 mg/L for dissoloved inorganic nitrogen and 0.033 mg/L for reactive phosphate).Comprehensive derivation of nutritional criteria values by multiple methods is more in line with the actual needs of aquatic ecological protection.The findings of this study provide scientific guidance for controlling eutrophication in Hangzhou Bay and formulating nutritional standards.

关 键 词：杭州湾 富营养化 营养物基准 频数分布法 压力-响应模型 

分 类 号：X323[环境科学与工程—环境工程]