苏州市总磷负荷空间分布特征及关键源区识别

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中图分类号：X52 文献标识码：A 文章编号：1008-9500（2026）02-0161-03

DOI：10.3969/j.issn.1008-9500.2026.02.048

Spatial Distribution Characteristics of Total Phosphorus Load and Identification of Key Source Areas in Suzhou City

ZHOUJing，JINWenlong （Suzhou Institute of Environmental Science，Suzhou 215ooo，China）

Abstract：Taking Suzhou cityas theresearch object，thespatialdistribution characteristicsand keysourceareasof total phosphorus pollution loadareanalyzed.Research showsthattotal phosphorus polltionin Suzhou mainlycomes from nonpoint sources，accounting for 61.1% of the total load; dryland pollution is the main source of total phosphorus in the Suzhou city，accounting for 33.5% of the total non-point source emissions; point source emissions account for 38.9% of the total emisions，with sewage treatmentplants being themainsource;Wujiang districtisakeysourceareafortotalphosphorus emissions in Suzhou，accounting for 25.51% of the total emissions; the phosphorus pollution load in the southern and northernpartsofSuzhouisrelativelyhigh，whilethephosphoruspollutionloadinthecentralbuilt-upareasisrelativelylow. Keywords： total phosphorus load; spatial distribution; key source area

水资源作为重要的战略资源，对社会经济的可持续发展起着重要的支撑作用。（剩余3231字）