But in general, for positive impact, forest management practices should mimic natural forest processes.
但一般而言，为了产生积极影响，森林管理做法应模仿自然森林过程。
Natural forest stand structure of Pinus tabulaeformis was studied.
对油松天然林的林分结构进行了研究。
B: Ali Mountains is a famous natural forest park and a summer resort as well.
B：阿里山是著名的天然森林公园和旅游胜地。
Urban forest plan is different from natural forest plan and urban garden plan.
城市森林规划，不同于林区和天然森林规划，也不同于城市园林规划。
Comprehensively Organizing and Implementing the Natural Forest Protection Project.
全面组织实施天然林保护工程。
A secondary forest is a natural forest formed after the original forest was felled.
次生林就是经过砍伐后又长起来的天然林。
The general trend of the natural forest pattern is from amass type to uniform type.
天然林的演替格局一般趋势是从集聚分布趋于均匀分布。
More than 900 species of herbs, is to study animals, plants and natural forest science bases.
药材900余种，是研究动、植物和天然次生林的科学基地。
The natural forest protection project had initiated, and input into forestry was further enlarged.
天然林资源保护工程开始启动，林业投入进一步加大。
In practice, this translated into expenditure on plantations, rather than the management of natural forest.
但实践中，大量的投入花在大面积的人工造林上，而不是对自然森林的管理。
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。
Natural forest conservation plays a very important role at the background of the ecology-based economy development.
在经济生态化的背景下，天然林资源保护意义重大。
Through processing these data, the transfer probability matrixes of three kinds of natural forest age were constructed.
经林龄转移资料归一化处理，构造出三类天然林林龄转移概率矩阵。
We took a side trip to a geological wonder called the Stone Forest, a natural forest of strangely shaped stone pinnacles.
途中我们顺便参观了地质奇观“石林”，那是由各种奇形怪状的尖形石头构成的天然地貌。
Based on survey resources in the past years, natural forest stand structure of Pinus tabulaeformis in Machibei was studied.
依据历年调查资料，对麻池背油松天然林的林分生长结构进行了研究。
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。
Picea is not only major natural forest resources in Qinghai, but also fine tree species of afforestation and urban greening.
云杉是青海省县主要的天然林资源，也是荒山造林和城镇绿化的优良树种。
Sichuan province is the earliest district which carried out the project of natural forest resource protection in our country.
四川省在我国最早实施天然林保护工程。
Since the nation has implemented the natural forest protection project, non-wood resources are taking more and more attention.
自从国家实施天然林保护工程以后，非木质资源的利用受到越来越多的关注和重视。
The paper elaborates the concept, principle, method and procedures of multi-objective integrated management of natural forest.
阐述天然林多目标综合管理概念、原则、方法和管理程序。
An elevated walkway is the dynamic experiential path that leads visitors through both the virtual forest and the natural forest.
高架人行通道是也形成了动态体验，引导游客穿过虚拟森林和自然森林。
The Greater Hinggan, the Lesser Hinggan and the Changbai mountain ranges in the northeast are China's largest natural forest areas.
东北地区的大兴安岭、小兴安岭和长白山区，是中国最大的天然林区，到处是望不到边的红松、落叶松、黄花松等针叶林和白桦、柞树、水曲柳、杨树、榆树等阔叶林。
China is involved in the preservative project of natural forest with a great number of idle forest workers and felling and transporting tools.
中国因实施天然林保护工程，形成过剩的林业工人和闲置的采运机械设备。
Finally, the ranges of urban forest are argued, and urban forest between natural forest. Landscape architecture and urban green area are compared.
最后探讨城市森林的范围，对城市森林与森林、城市园林、城市绿地进行比较。
When combined with Natural Forest Conservation Project, this technology can transform forest fire prevention from consumption type into developing type.
它与天然林保护工程紧密衔接，可使森林防火由单纯的消耗型变成有开发功能的经营型。
Our Country carry out natural forest protection project since 1998. It has very important significance to protect natural forest and improve environment.
我国从1998年开始正式启动天然林保护工程，这对于保护天然林资源、改善生态环境都有极其重要意义。
The inteduction of natural forest protection project will cause industry structures adjust and workers will be re -deployed between different industries.
实施天然林保护工程后，原有林区产业结构发生巨大变化，引起职工在产业间和产业内部的转移。
By the statistical analysis method, the authors researched the growth model and cutting age of masson pine natural forest with the sample plot inventory data.
根据标准地调查资料，应用统计分析方法研究生长模型，并结合森林经营实际确定采伐年龄。
China is comparatively lack of the natural forest, and the yield of wood harvesting is decreasing because of "the National natural forest Conservation Project".
由于中国天然林相对比较缺乏，加之我国现在正在实行“天保”工程，木材采伐量递减。
China is comparatively lack of the natural forest, and the yield of wood harvesting is decreasing because of "the National natural forest Conservation Project".
由于中国天然林相对比较缺乏，加之我国现在正在实行“天保”工程，木材采伐量递减。
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