本主题处理森林及森林外树木帮助调节土壤、水文以及水生系统的作用。
The theme addresses the role of forests and trees outside forests to help moderate soil, hydrological and aquatic systems.
对森林、土壤及水利系统等自然资源的有节制的使用及系统的保护。
The controlled use and systematic protection of natural resources, such as forests, soil, and water systems.
城市污泥对退化森林生态系统土壤的人工熟化研究。
Artifical improvement of soil fertility in a regraded forest ecosystem by using municipal sewage sludge.
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