natural forest

基本解释

Indeed, it is worse, for natural forest promotes cloud formation and local rainfall, and thus helps nearby farmers.
而且更糟的是荒地破坏了原自然森林促成的云层和地区降雨，影响到邻近原来受益的农夫。
They suggest that if the subsidies were to end, new forest could be converted back into cropland and natural forest logged again.
他们认为，如果那些津贴不到位，新的森林就会又变为农田，砍伐天然林又会出现。
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These practices, developed and applied for the protection and sustainable management of natural forest resources in pilot areas in China, will provide Read More »
林业部门在中国经济中起着十分重要的作用，为40％的农村居民提供能源，并提供建筑业所需的几乎全部木材和板材以及国内纸浆造纸业的原料。该项目的主要内容包括人工林建设，有选择地在部分天然林和自然保护区实行参与式规划管理，开展以项目区内的农村社区为对象的社区发展活动，并开展林业管理的培训和能力建设。

The trees surrounding Biltmore look like a natural forest.
The Forest Service is protecting the area from too much human activity so it will return to its natural wild condition.
About thirteen million hectares of forest were cut down or lost through natural causes each year in the last ten years.

Participating farms have designated more than 100, 000 hectares as conservation areas, and 99% have not converted any natural forest areas to coffee production since the C.
FORBES: Conservation International: Stemming the Tide of Environmental Crises, Part Two

天然林
Soil depth was from 10 to 20cm for most plantations and from 20 to 30cm for natural forest.
从土壤土层厚度来看,大部分人工林主要分布在土层1020cm,天然林主要分布在土层2030cm。
天然森林

天然林
The research also do some empirical work take the natural forest protection project (NFPP) for instance.
研究以天然林资源保护工程为例,展开了实证分析。
地球科学
天然林