小清河口氮磷营养物基准制定  

Approach of Nutrient Criteria Establishment for the Xiaoqing River Estuary

作　　者：王司玉 隋修国 李正炎[1,2] Wang Siyu;Sui Xiuguo;Li Zhengyan(College of Environmental Science and Engineering, Ocean University of China, Qingdao 266100, China;Key Laboratory of Marine Environment and Ecology, Ministry of Education, Ocean University of China, Qingdao 266100, China)

机构地区：[1]中国海洋大学环境科学与工程学院,山东青岛266100 [2]中国海洋大学海洋环境与生态教育部重点实验室,山东青岛266100

出　　处：《中国海洋大学学报（自然科学版）》2021年第7期131-140,共10页Periodical of Ocean University of China

基　　金：国家重点研究发展计划项目(2018YFC1407601)资助。

摘　　要：本文采用频数分布法和压力-响应模型法分别推导小清河口营养物基准,其中频数分布法根据河口所有监测站位营养物浓度的下第5个百分点作为基准值;压力-响应模型法选取小清河口三种常见赤潮藻中肋骨条藻(Skeletonema costatum)、赤潮异弯藻(Heterosigma akashiwo)和微型原甲藻(Prorocentrum minimum)为实验对象,建立河口营养物水平与浮游藻生长之间的压力响应关系模型并推导生态基准值。频数分布法得出的小清河口总氮(TN)、总磷(TP)、溶解无机氮(DIN)和活性磷酸盐(SRP)基准值分别为5.18、0.14、3.33和0.015 mg/L。由于小清河口氮污染严重,现场调查得到的TN和DIN均值均远超我国地表水环境质量标准IV类值(1.5 mg/L)和海水水质标准IV类值(0.5 mg/L),因此频数分布法推导的TN和DIN基准值不推荐为小清河口营养物基准值。压力-响应模型法推导的四种营养物基准值分别为0.23、0.059、0.17和0.020 mg/L,该值可作为小清河口营养物基准推荐值,以期为小清河口营养物标准制定和生态风险评估提供科学依据。In this paper,the frequency distribution method and stressor-response model method are used to derive the reference values of nutrients in the Xiaoqing River estuary.The frequency distribution method was based on the 5th percentile of nutrient concentrations at all monitoring stations in the Xiaoqing River estuary as the recommended reference value.The stressor-response model method was combined with field survey data to establish a stressor-response relationship model for phytoplankton and nutrients in the Xiaoqing River estuary.Skeletonema costatum,Heterosigma akashiwo and Prorocentrum minimum were used as the test species,and the ecological reference values of total nitrogen(TN),total phosphorus(TP),dissolved inorganic nitrogen(DIN),and soluble reactive phosphate(SRP)were derived for Xiaoqing River estuary.The reference values derived through the frequency distribution method were 5.18,0.14,3.33 and 0.015 mg/L,respectively.The reference values derived from the stressor-response model were 0.23,0.059,0.17 and 0.020 mg/L,respectively.The reference values of TN and DIN derived through the frequency distribution method were not recommended as nutrient criteria for the Xiaoqing River estuary,because the nitrogen concentrations in the estuary were much higher than the Grade IV level(1.5 mg/L)of the environmental quality standards for surface water and the Grade IV level(0.5 mg/L)of the seawater quality standards in China.Nevertheless,the reference values derived from the stressor-response model were recommended as the nutrient criteria,which could provide scientific basis for nutrition standard formulation and ecological risk assessment for the estuary.

关 键 词：河口营养物基准 小清河口 压力-响应模型 频数分布法 

分 类 号：X524[环境科学与工程—环境工程]