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natural forest ecosystem
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  天然林生态系统
     Applying it into the research on the relationship between heredity and succession of natural forest ecosystem, between population and ecosystem etc, contributes to managing genetic resources, protecting biodiversity, maintaining forest health, and also guides scientifically to utilize natural forest resources, ecosystem recovering and species indraught.
     应用生态遗传学研究天然林生态系统中遗传和演替的关系、种群和生态系统的相互关系等 ,有助于更好地进行天然林遗传资源的管理、生物多样性保护以及健康维护 ,能够科学地指导天然林资源的合理利用、生态恢复和物种引进 .
短句来源
     In order to realize the stabilization and sustainable development of forest land ecosystem of Nanping City,the natural forest ecosystem of high benefit should be built,the mixed forests are built to avoid the soil erosion by selecting the proper tree species,the ecological fruit garden of synthetically stereoscopic layout is built. 
     南平市自然条件优越,但由于先天系统较脆弱,人口快速增长,城市化加快,经济投入不足,管理不善等原因,导致了天然林生态系统不稳定,人工林树种结构失调且针叶化现象普遍,土壤侵蚀严重,生物多样性丧失等一系列问题。 为实现南平市林地生态系统的稳定与可持续发展,就必须建立高效益的天然林生态系统,选择合适树种,营造混交林,防止土壤侵蚀,建立综合立体布局的生态果园。
短句来源
  “natural forest ecosystem”译为未确定词的双语例句
     Momic and Utilization of Natural Forest Ecosystem Environment Cash Crops Growing under Natural Forest in Xishuangbanna
     森林生态环境的利用和模拟——西双版纳当地民族天然林下经济作物种植研究
短句来源
     Changes in Vegetation Indices of the Natural Forest Ecosystem in the Xinglong Mountain National Nature Reserve
     兴隆山国家级自然保护区的植被指数及其变化特征
短句来源
     2. The species diversity of shrubs and herbs didn't show notable differences in Eucalyptus grandis plantation, and didn't have the distribution pattern and the diversity character showed: shrub layer>arbor layer> herb layer in subtropical natural forest ecosystem.
     2 巨桉人工林灌木层与草本层物种多样性无明显差异,并不表现亚热带自然生态系统的灌木层>乔木层>草本层的物种多样性分布格局。
短句来源
     The biodiversity of the rubber forest was lower than the natural forest ecosystem's.
     胶林的生物多样性低于自然生态系统。
短句来源
     This is only a conservative and lower estimation of the natural forest ecosystem in Fujian due to some uncertain factors and inaccuracy of methodology.
     由于存在许多不确定因素以及方法上的不成熟,故所得福建省天然林生态服务价值只是一个保守的、较低的估计值。
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  相似匹配句对
     forest .
     林。
短句来源
     Natural.
     Natural(天然等同)相近。
短句来源
     Transformation of Natural Secondary Forest
     天然次生林改造问题的探讨
短句来源
     Study on Natural Forest Protection Legislation
     天然林保护立法研究
短句来源
     It is dirty to lack the natural lung, namely forest ecosystem.
     缺少自然的肺脏,即森林生态系统。
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  natural forest ecosystem
The effect of a forest reserve establishment on the natural forest ecosystem recovery and on the protection of valuable indigenous woody species in Jebel Marra, the Democratic Republic of the Sudan, is described.
      
What type of diversity yields synergy during mixed litter decomposition in a natural forest ecosystem
      
Bioretention systems are designed to mimic the functions of the natural forest ecosystem for treated storm water runoff.
      
As in a natural forest ecosystem any disturbance will eventually be corrected by internal forces.
      


1. The southeastern part of Xizang is abundant in its specific topography, ecotype, biotic population and forest vegetation. In this region, there exist a large number of ancient, healthy and natural forest ecosystems, among which the subalpine dark coniferous forests are found to be a widly distributed, extensively stretched, stable and high productive formation group.

一、西藏东南部拥有极丰富而特异的地貌类型、生态类型、生物种群和森林植被类型。藏东南林区有大面积古老,健康而完好的天然森林生态系统。其中亚高山暗针叶林是分布广、面积大、稳定性强、生物生产量高的森林群系。 二,西藏亚高山暗针叶林是寒温带暗针叶林分布最南、最高的林区之一。由于地带三向性的分异,亚高山暗针叶林有明显的水平分区和垂直分带。在各区,带中,森林群系,建群种,林型及其生长状况都有明显的差异。 三,西藏亚高山暗针叶林的水平分布可分为三亚区:(1)三江流域峡谷、山原块状暗针叶林亚区;(2)喜马拉雅山南麓高山峡谷湿润暗针叶林亚区;(3)雅鲁藏布江中下游沟谷暗针叶林亚区。 在分布区的海拔2700—4300米的垂直带内,分布有云杉林群系、冷杉林群系和圆柏林群系。各群系的分布带内,随水热状况的变化组成有规律的林型垂直分布带谱。 四、西藏亚高山暗针叶林的生长特点为;立木高大,生长持续期长,林分蓄积量高。在喜马拉雅山南麓湿润区,云杉林分的蓄积最高达每公顷3500余立方米,平均胸径111厘米,平均高67米。立木最大胸径162厘米,最大树高72米。 五、不同海拔高度与坡向的暗针叶林林分生长差异显著。在喜马拉雅山南麓湿润区,云杉的...

一、西藏东南部拥有极丰富而特异的地貌类型、生态类型、生物种群和森林植被类型。藏东南林区有大面积古老,健康而完好的天然森林生态系统。其中亚高山暗针叶林是分布广、面积大、稳定性强、生物生产量高的森林群系。 二,西藏亚高山暗针叶林是寒温带暗针叶林分布最南、最高的林区之一。由于地带三向性的分异,亚高山暗针叶林有明显的水平分区和垂直分带。在各区,带中,森林群系,建群种,林型及其生长状况都有明显的差异。 三,西藏亚高山暗针叶林的水平分布可分为三亚区:(1)三江流域峡谷、山原块状暗针叶林亚区;(2)喜马拉雅山南麓高山峡谷湿润暗针叶林亚区;(3)雅鲁藏布江中下游沟谷暗针叶林亚区。 在分布区的海拔2700—4300米的垂直带内,分布有云杉林群系、冷杉林群系和圆柏林群系。各群系的分布带内,随水热状况的变化组成有规律的林型垂直分布带谱。 四、西藏亚高山暗针叶林的生长特点为;立木高大,生长持续期长,林分蓄积量高。在喜马拉雅山南麓湿润区,云杉林分的蓄积最高达每公顷3500余立方米,平均胸径111厘米,平均高67米。立木最大胸径162厘米,最大树高72米。 五、不同海拔高度与坡向的暗针叶林林分生长差异显著。在喜马拉雅山南麓湿润区,云杉的最适分布带在海拔2700—2800米,冷杉的最适分布带在海拔3600?

More and more forest diseases have made their appearence in Zhejiang province, which has caused enormous losses. The fundamental cause putting the forest diseases out of control lies in the deterioration of the natural forest ecosystem caused by various factors and the failure in establishing one promptly in artifical forests. In the forest disease control practice, the authors esteem it important to persevere in the implementation of the policy "Placing emphasis on prevention while promoting...

More and more forest diseases have made their appearence in Zhejiang province, which has caused enormous losses. The fundamental cause putting the forest diseases out of control lies in the deterioration of the natural forest ecosystem caused by various factors and the failure in establishing one promptly in artifical forests. In the forest disease control practice, the authors esteem it important to persevere in the implementation of the policy "Placing emphasis on prevention while promoting intergrated control" and they explain that, taking the theory of ecology, pathology and economics as its foundation, the forest management as the key step, and bringing into full play all the other control measures is what the intergerated control shoud be. The authers urge in the papre to speed up the tempo of the work on biological control, give play to the functions of the ecosystem of artifical forests on disease control and explore the root causes of new and doubtful diseases to achieve great improvement over the work in the prevention and control of forest diseases.

近年来,我省森林病害越来越重,究其原因,主要是由于天然林的森林生态系统不断恶化,而人工林的森林生态系统又未及时恢复之故。在贯彻“预防为主、综合防治”的方针时,应以生态学、病理学、经济学观点为基础和以营林措施防治为主,并充分发挥其它措施(包括化学防治)的应有作用,对森林病害的生物防治与人工林生态系控制病害以及新病害及疑难病害的研究工作,必须迅速加强。

In this paper, tree mortality, coarse woody debris(CWD)storage, its decomposition rate and role in nutrient cyclings in two temperate forest ecosystems of Changbai Mountain Natural Reserve of China and Andrews Experimental Forests of USA were studied. Resuits show that CWD is an important component in temperate natural forest ecosystems. Its functional importance varies with forest types and decreases from coniferous forest to mixed forest. A primary role of CWD...

In this paper, tree mortality, coarse woody debris(CWD)storage, its decomposition rate and role in nutrient cyclings in two temperate forest ecosystems of Changbai Mountain Natural Reserve of China and Andrews Experimental Forests of USA were studied. Resuits show that CWD is an important component in temperate natural forest ecosystems. Its functional importance varies with forest types and decreases from coniferous forest to mixed forest. A primary role of CWD in nutrient cyclings within forest may be to retain nutrients and stabilize ecosystem following major natural disturbances. Global estimation of carbon stored in detritus should include CWD in future, otherwise, it is possible to underestimate 2—16×10~(13)kg of global carbon storage in forest detritus, or relative error in system is 2—10%.

通过对我国长白山自然保护区红松针阔混交林和美国Andrews试验林异叶铁杉林的林木死亡量、粗死木质物(CWD)贮量、分解速率和它们在生态系统养分循环等方面动态研究表明,CWD是温带天然林生态系统的重要组成部分,它们在生态系统功能方面的重要性,因森林类型的不同而不尽相同,CWD在针叶林中比针阔混交林中更为重要。CWD在生态系统养分循环中的一个重要作用,很可能在于系统遭受重大外界扰动后,起到贮藏养分,增加系统稳定性的作用。未来全球森林凋落物C贮量估测时,应该包括CWD,否则将低估全球森林凋落物C贮量2.0—16×10~(13)kg,系统相对误差达2—10%。

 
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