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.
简述了退化森林生态系统恢复和重建的一般操作程序；
The common work procedure of rehabilitating degraded forest ecosystems was briefly introduced.
退化森林生态系统的恢复和重建依赖于对有关理论的理解和认识，也依赖于对有关技术体系的研究和应用。
To restore and rehabilitate the degraded forest ecosystems, we must understand the theories concerned, also we have to study and apply the related technology.
北卡罗莱纳州立大学的Rodrigo Arriagada和他的同事认为生态系统付费方案对有效减少10%的农场里部分森林退化做出了贡献。
Work by Rodrigo Arriagada of North Carolina State University and his colleagues suggests that the PES scheme was responsible for only 10% of the reduced deforestation on farms that took part.
森林生态系统退化的要害因素是林业开发强度。
The crucial factor that silvan ecosystem degrades is forestry development intensity.
不合理的土地利用方式和对森林的不合理砍伐导致脆弱的土壤系统和森林生态系统的严重退化、生产力下降和严重的水土流失。
Irrational land use and forest cutting have resulted in the serious degradation, the decrease of land productivity and the water and soil erosion in the fragile soil system and forest system.
第二章探讨了森林生态系统的退化及其恢复和重建的理论基础。
In chapter 2, the theories of degradation and restoration and rehabilitation of forest ecosystems were discussed.
第二章探讨了森林生态系统的退化及其恢复和重建的理论基础。
In chapter 2, the theories of degradation and restoration and rehabilitation of forest ecosystems were discussed.
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