摘要
目的基于SWAT模型模拟计算出的多种管控措施在海城河区域内的治理效果,得出最佳管理方案。方法基于SWAT模型的分析功能,分析海城河流域的总磷负荷及其时空分布及污染来源,并根据污染源特性来设定治理方案,利用SWAT模型的情景模拟功能来对比不同方案的污染削减率。结果在时间分布上,污染负荷变化与径流变化呈现正相关,主要是受到径流和农田施肥影响,在汛期内的总磷负荷约占总负荷67.62%。在空间分布上呈现上游平均污染负荷较低,总磷污染输入主要来自于下游,输出占比为35.02%,关键源分别为养殖业源和生活源。海城河流域内总磷污染主要来源为种植业、养殖业和生活源,贡献率分别为30.48%、25.14%和41.59%,关键源为生活源。结论建立的SWAT模型可以有效模拟该流域内的总磷负荷变化,针对各污染源可以采取科学施肥、养殖场粪污科学利用和修复河道及周边生态环境等措施,有效削减和拦截入河总磷污染量。
Based on the analysis function of the SWAT model,the total phosphorus load and its spatiotemporal distribution as well as pollution sources in the Haicheng River Basin are analyzed,and treatment plans are set according to the characteristics of pollution sources.The scenario simulation function of the SWAT model is used to compare the pollution reduction rates of different plans,and finally the best management plan is obtained.The simulation calculation results show that in terms of time distribution,there is a positive correlation between pollution load changes and runoff changes,mainly influenced by runoff and farmland fertilization.The total phosphorus load during the flood season accounts for approximately 67.62%of the total load.In terms of spatial distribution,the average pollution load in the upstream is relatively low,and the input of total phosphorus pollution mainly comes from the downstream,accounting for 35.02%of the output.The key sources are aquaculture sources and domestic sources,respectively.The main sources of total phosphorus pollution in the Haicheng River Basin are agriculture,animal husbandry,and domestic sources,with contribution rates of 30.48%,25.14%,and 41.59%,respectively.The key source is domestic sources.Measures such as scientific fertilization,scientific utilization of livestock manure,and restoration of the river and surrounding ecological environment can be taken to effectively reduce and intercept the total phosphorus pollution entering the river for each pollution source.
作者
晁雷
鲜龙宇
李亚峰
CHAO Lei;XIAN Longyu;LI Yafeng(School of Municipal and Environmental Engineering,Shenyang Jianzhu University,Shenyang,China,110168)
出处
《沈阳建筑大学学报（自然科学版）》
CAS
北大核心
2024年第6期1144-1152,共9页
Journal of Shenyang Jianzhu University：Natural Science
基金
国家自然科学基金项目(51908377)。
关键词
SWAT模型
总磷负荷
模拟
时空分布
关键源
SWAT modle
total phosphorus load
simulation
spatio-temporal distribution
key source
