1 森林退化和改良 森林退化(forest degradation) 和森林改良(forest improvement) 是两个相反的过程,一旦定义了森林退 化,森林改良便不言而喻。
基于12个网页-相关网页
Low Production Forest Improvement [林] 低产林改造
secondary forest improvement 次生林改造
low-yield forest improvement 中低产林改造
forest tree improvement [林] 林木改良 ; 改良
forest landscape improvement 森林景观改造
Genetic improvement is also a means to improve forest productivity, for example to ensure a high wood production in intensively managed forests.
基因改良亦是提高森林生产力的一种手段，例如确保集约管理的森林提供高木材产量。
Artifical improvement of soil fertility in a regraded forest ecosystem by using municipal sewage sludge.
城市污泥对退化森林生态系统土壤的人工熟化研究。
Grasping the concept and constructive characteristics of the forest city correctly makes a great significance for the promotion and improvement of the forest city's constructive levels in our country.
正确把握森林城市理念与建设特点，对于促进和提高我国森林城市建设水平具有重要意义。
应用推荐