the primary forest的意思|示意

The production of wood and non-wood forest products is the primary function for 34 percent of the world's forests.

木材和非木材森林产品的生产是全球34%森林的主要功能。

The world's growing population has been a primary cause of rain forest destruction.

世界人口的日益增长是造成热带雨林破坏的一个主要原因。

For forest, grassland and river ecosystems, phreatophyte should be applied to, promoting the primary succession of the ecosystem.

对于森林、草地、江河等自然生态系统，植被选择应以原生种类为主，以促进生态系统进行原生演替；

According to the situation of natural forest in Amuer Forestry Bureau, the authors of this paper present the basic thoughts and primary objects of executing protection engineering in these areas.

本文提出了阿木尔林业局实施天然林资源保护工程的基本思路和主要目标。

The AH-1 twin engine versions remain in service with United States Marine Corps as the services primary attack helicopter. Surplus AH-1 helicopters have been converted for fighting forest fires.

对AH - 1双引擎版本保持与美国的海军陆战队服务作为服务的主要攻击直升机。

Results showed that human activities were the primary factors affecting forest landscape fragmentation and forest coverage.

研究结果表明，人类活动主要影响森林景观破碎度以及森林覆盖面积。