英语人>网络例句>森林 相关的搜索结果
网络例句

森林

与 森林 相关的网络例句 [注:此内容来源于网络,仅供参考]

Clear-cutting with the formation of the global Forest Stewardship Council.

这个委员会证实,从森林到木材储存,以可持续的、环保的、友善的方式进行,木材生产是可以丰收的。

Clear-cutting in Swedish,German, and Finnish forests didn't stop because the forest-products companies in those countries.were altruistic.

瑞典,德国和芬兰的森林砍伐停止,因为这些国家的林木制品公司都不是是为了的公共利意,而是自私的。

Forests are certified by the FSC.3 However, this total represents only a small portion of our forests; clear-cutting is still a widely used practice.

然而,这只是我们森林中的一小部分,皆伐依然被广泛适用于实践。

Clear-cutting large areas of forest at once and constructing steep switchback roads to harvest the timber have resulted in erosion and stream habitat destruction.

为了木材而大面积彻底砍伐森林以及修建陡峭的山路造成了水土流失和河流生态系统的破坏。

An entire forest might be clearcut, in the interest of making a profit, without a single tree planted in its place.

为了获得利润,整片的森林被砍光,一棵树都不留下。

In this paper,with twice field surveys on the same long-term site in 1980 and 1992,the organization dynamics of Cryptocarya community,Dinghushan zonal climax of monsoon evergreen broadleaved forest,was studied.

本项研究系统地研究鼎湖山森林群落的不同演替阶段的代表性群落在群落演替过程中的群落结构动态。

During the years of 2 041 ~ 2 049 ,the Korean pine broad-leaved forest would become the climax forest community in this area,with an area around 13 120 ~ 13 242 hm2 if taking selective cutting as the prevailing harvesting method.

这种地带性顶极群落在未来的森林经营利用中能否存在,许多学者进行了专门的研究。徐化成等[24]对红松阔叶林的特点、分布规律、动态、经营措施等进行了详细的研究,为红松阔叶林的经营利

The conservation objects of Haitangshan Nature Reserve are forest types Such as climax community of mixed forest of chinese pine and oak,wild animal and distinctive scenery on north slope of Yiwulu Mt.

海棠山自然保护区为森林类型,主要保护油松栎类混交林的顶极群落、野生动物和医巫闾山北侧的独特景观。

The study is carried out that the comparison of fine root production, decomposition and distribution along with Korean pine and broad-leaved climax forest succession; the fine root contribution to the belowground C and N storage along with Korean pine and broad-leaved climax forest succession; and the comparison of belowground C and N storage among the Korean pine and broad-leaved climax forest, three dark-conifer forests, a betula ermanii forest along altitude.

研究内容包括:原始阔叶红松林及其不同演替阶段的次生林中细根的生长和周转、分解与分布的特征,阐明在不同演替阶段细根的变化;原始阔叶红松林及其不同演替阶段的次生林中细根对根系、土壤和林地地下的碳、氮贮量的影响,分析在不同演替阶段细根周转对地下碳、氮贮量的贡献;以及对不同垂直海拔高度分布的不同类型的原始森林中细根和根系生物量的变化,及细根对根系、土壤和林地地下碳、氮贮量的贡献进行了研究。

The forest was characterized with phanerophyte evergreen plants with single-mesophyll-leathery leaves, which reflected the nature of tropical Karst mountainous seasonal rain forest.(2). Community succession was divided into five stages by using Cluster method, PCA method; the succesion stages include herbaceous stage, scrub-shrub stage, small tree stage, arbor stage and climax seasonal rain forest stage.(3). Based on similarity theory, succession sere was constructed with the community similarity equation formed.

结果表明:(1)森林群落在外貌上,以常绿高位芽、单叶、革质、中型叶植物为主,反映了热带岩溶山地季雨林的特点;(2)运用聚类分析、PCA排序等方法将群落演替阶段划分为草本群落阶段、灌丛阶段、小乔木阶段、乔林阶段、顶极季雨林阶段;(3)运用相似学原理,组建群落间相似度方程并以此方程构建了群落演替系列;(4)研究表明桂西南岩溶区生态系统健康受到严重胁迫。

第96/100页 首页 < ... 92 93 94 95 96 97 98 99 100 > 尾页
推荐网络例句

Chrysanthemum of 10 thousand birthday is lax to edaphic requirement, with the arenaceous qualitative loam with fecund, good drainage had better.

万寿菊对土壤要求不严,以肥沃。排水良好的砂质壤土为好。

He unstepped the mast and furled the sail and tied it.

他拔下桅杆,把帆卷起,系住。

Therefore, positively advances the interest rate marketability reform is one of current our country finance reform important tasks.

因此,积极推进利率市场化改革是当前我国金融改革的重要任务之一。