目的探讨中线水源区水土保持生态建设。方法采用文献分析和野外调研相结合的方法,并以实例进行论证。结果水源区内土壤侵蚀严重,其中坡耕地侵蚀模数高达6 000 t/a.km2,荒山、草坡等用地为1 000~3 000 t/a.km2。结论在水源区应形成以生态修复为主,结合工程措施的综合治理模式,可有效地减轻非点源污染。 Objective To explore the ecological construction of soil and water conservation in midline water source area. Methods The methods of literature analysis and field research were combined and demonstrated with examples. Results Soil erosion was serious in the water source area. The modulus of erosion on slope farmland was as high as 6 000 t / a.km2, while that of waste hills and grass slopes was 1 000-3 000 t / a.km2. Conclusion In the water source area, a comprehensive ecological and ecological restoration should be established and integrated with engineering measures to effectively reduce non-point source pollution.