Part v: This part combined the development and protection of the tourism resources in the ecological tourism urban with the circulation economy theory.
第五部分结合循环经济理论分析了生态旅游城市的旅游资源的开发与保护问题。
Full ecological agriculture theory considers that water resources available for exploitation development exists in the all process of water circulation.
全生态农业理论认为，可开发水资源存在于水循环的全过程之中。
At present, the strategy of constructing great forestry circulation focused on ecological environment is imperative in our country.
目前在我国构建新的以生态环境建设为主体的林业大流通战略势在必行。
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