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。
At present, the strategy of constructing great forestry circulation focused on ecological environment is imperative in our country.
生态环境林、城市防护林建设，天然林资源保护，水土保持，林业苗木生产及综合利用开发等。
Construction of ecological environment forest, urban protection forest, water and soil conservation, production and comprehensive utility and development of nursery stock.
本文对林业在城市生态环境建设中的三大效益进行了定性与定量的评价。
In this dissertation, it also makes qualitative and quantitative evaluation on the three major benefits (ecology, economic and social ones) of forestry in the urban ecology environment construction.
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