The main pollution reasons include the species hydrogeologic conditions, sewage irrigation, landfill of municipal refuse, and regional groundwater drawdown.
最主要的污染原因有：独特的水文地质条件，污灌，砂石坑垃圾回填，及区域地下水位下降。
The amount and components of municipal refuse in Mangshi are investigated fully. The engineering design and environmental effects of sanitary landfill of municipal refuse are discussed.
对芒市地区城市生活垃圾的数量、成分进行了充分调查，对卫生填埋的工程设计与环境效应进行了初步探讨。
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