本文通过野外详细考察与大量资料统计分析，阐述了大沟流域的地形结构、水热状况、人口、资源等主要特点、相互制约性及对生态环境的影响，并将自然、社会和经济视为统一的整体，从不同角度，揭示现势情况与差异。因此，提出因地制宜，恢复森林植被，使环境逐步得到整治。同时，发展农林牧业合理的生产结构，逐步建立生态农业体系，使生态、经济和社会三方面效益得到有机地结合。

The paper discusses the ways to use reasonably and to protect the natrual resoural resources of basin Dagou basin on a field survey and lots of comprehesively statistic data on natural and natural and social conditions.  The author,  first, explained the topographic structure, water-heat condition and natural resources as well as population, etc. in the basin, then analysized the present situations and the spatial differences in natural resuorces, society and economy. At last, some suggestions to improve the environment condition were proposed including renovation of vegetations on landforms and setting of ecologically agricutural system in order to combinate organically economic benifit with ecologic and social benifits.