摘要
东江流域是广东、香港的水资源供应地,确定其氮、磷等污染物的确切来源以及其时空分布特征,是有效地达成东江流域污染控制目标和保持水质的关键所在。开发了一个基于HSPF的分布式模型来研究东江流域点源及非点源氮、磷污染。HSPF模型在12个水文站上的校准达到了良好标准。校准后的模型用来分析了东江水量和水质在时间和空间上的变化。分析结果表明东江干流上游龙川站氨氮浓度最低,河源站最高,但总氮浓度上下游变化不大;总磷浓度和氨氮呈现相似的趋势,从河源到岭下再到博罗浓度递次降低。增江河、公庄河、新丰江水库和西枝江四条支流对东江的负荷总贡献为71.9%的氨氮,61.6%的总氮和73.8%的总磷。因此东江负荷控制的重点应该放在这几条支流。
Determining the sources of nutrients and their temporal and spatial distributions is the key to effectively achieve the pollution control objectives and maintaining water quality in the Dongjiang River. A HSPF-based distributed model is developed to study nutrient pollution from point and non-point sources in the Dongjiang River watershed. The HSPF model is first calibrated at 12 hydrological stations. The calibrated model is then used to analyze the temporal and spatial characteristics of flow and water quality in the Dongjiang River. The results show that ammonia nitrogen concentrations are the lowest in the upstream Longchuan Station, while the highest in Heyuan Station, but total nitrogen concentrations exhibit little changes from upstream to downstream. Total phosphorus concentrations show a similar trend as ammonia nitrogen, with concentrations decreasing from Heyuan to Lingxia and then to Boluo. The four tributaries-Zengjiang River, Gongzhuang River, Xinfengjiang Reservoir, and Xizhijiang, contribute a total of 71.9% of ammonia nitrogen, 61.6% of total nitrogen, and 73.8% of total phosphorus. Therefore, the focus of Dongjiang river pollution control should be reducing pollutant loads from these tributaries.
作者
孙滔滔
赵鑫
尹魁浩
彭盛华
林青
吴静
SUN Tao-tao;ZHAO Xin;YIN Kui-hao;PENG Sheng-hua;LIN Qing;WU Jing(National Key Laboratory of Environmental Protection Drinking Water Source Management Technology,Shenzhen Institute of Environmental Science,Shenzhen 518001,Guangdong Province,China;Guangdong Yuegang Water Supply Co.LTD,Shenzhen 518021,Guangdong Province,China;San Francisco Estuary Institute,CA,USA)
出处
《中国农村水利水电》
北大核心
2020年第4期39-43,48,共6页
China Rural Water and Hydropower
基金
深圳市科技计划项目(JSGG20150814163914934)。
关键词
东江流域
HSPF模型
水质
氨氮污染
Dongjiang River
HSPF model
water quality
nutrient pollution
