查询词典 forest

Fines tabulaeformis forest and Quercus liaotengensis forest are among the most important vegetation in warm temperate region in China.

油松林和辽东栎林是中国暖温带具有代表性的森林植被林型。

Forest management and conservation information is obtained from remeasurement data; especially, the continuous data that from forest resource monitor system.

森林资源经营、保育资讯的获得，决定於可靠的重覆调查资料，而拥有连续不断的资料，最有效的途径则是来自於森林资源监测系统。

Due to the forest litter layer is thicker than the grassland, its soil structure is looser and has higher water and organic matter content in the solum. In addition, the rhizomatic growth of forest community vertical structure has obvious differences on the herbosa in the pore size distribution and the infiltration rate.

由於林地较草地的枯枝落叶层为厚，使其土壤结构较松散，并会增加表层土壤水分保持及有机质含量，再者，森林及林下植物相较於草类根系的生长及分布情况，对於不同土壤深度之大小孔隙的比率及水分入渗速率具有明显的差异。

This paper discussed the distribution of forest resources in the tropics, their main types, main characteristics and present management status, and proposed twelve management modes, and these modes include establishing nature conservation region, eco-public-benefit forest management, extravisme, limiting logging and regeneration after logging, logging three and remaining seven method, tropical shelterwood system, sylviculture douce, whole cultivation method, specialized cultivation method, strip clearcutting method, developing tree species of lacking noted and nature regeneration, closing hillsides to facilitate afforestation.

本文对世界热带地区的森林资源分布、基本类型、主要特征、世界次生林的经营现状和主要经营方式讨论。这些经营方式包括建立自然保护区、生态公益林经营、&采掘主义&、限制采伐和伐后更新、&砍三留七&法、&扶持&式育林法、&抑制&式育林法、整体培育法、专门培育法、带状皆伐法、开发欠知名树种、自然更新和封山育林。

This results indicated that peashrub shrubland created a favorable N condition for its invading the meadow and being invaded by birch forest, and played a important role in altering the successional direction of meadow→peashrub shrub land →birch forest.

尽管箭叶锦鸡儿灌丛植物叶片与凋落物中全N、全P浓度在大多数取样点上都低于硕桦，但表层土中全N浓度高于硕桦和草甸，且其土壤有机质的供氮能力以及维持氮素能力都高于硕桦林和草甸，表明，锦鸡儿灌丛为侵入草甸和硕桦入侵提供了良好的养分条件，在该演替序列的发展过程中起了一定的推动作用。

With different scenarios sediment discharge followed by grassland＞shrubland＞broad-leaved woodland＞orchard＞coniferous woodland,among the scenarios grassland made sediment diacharge increase while the others made sediment discharge reduce.Along with the forest cover increased,the runoff and sediment discharge decreased;meanwhile the sediment discharge had the maximum rate of descent with the forest coverage rate between 40-70%.

不同情景的输沙量依次为草地＞灌木林地＞阔叶林地＞园地＞针叶林地，与原地类比较草地使模拟输沙量增加，其余的情景都使模拟输沙量减少；不同森林覆盖率情景下年均径流和输沙量都随森林覆盖率的增大呈下降趋势，森林覆盖率在40-70%之间的输沙量下降速率最大。

Silvicultural production mechanization is to increase forest cover, protection and an important way to expand the forest resources.

营林生产机械化是提高森林覆盖率，保护和扩大森林资源的重要途径。

2By using analytic hierarchy process, linear programming, multiobjective decision, principal component analysis and the analysis models integrated with GIS to process the spatial model analysis of the FOSDS.(3) Having finished the data of statistics, site type classification, management type organization, forest felling-plan, silvicultural planning, optimization of project, forest conversation pragramming and special topic map.

利用层次分析法、线性规划、目标规划、主成分分析以及Citystar软件的分析模型进行模型处理与分析；（3）完成了资源数表统计、立地类型划分、经营类型组织、木材采伐规划、营林规划、森林保护规划、方案优化及林业专题图的制作。

Under disturbances, original tropical seasonal rainforest has been replaced by several secondary vegetations experiencing progressive succession among which Sterculia nobilis pure forest and mixed forest of S. nobilis and Pteroceltis tatarinowis are best flourished.

但现存植被则是原生植被受不同程度干扰后形成的多种次生植被类型，且都处于向上演替的过程之中，保存最好的是苹婆纯林及其与青檀组成的混交林。

On the basis of summarizing the application of the Penman-Monteith model in forest underlying surface, the evaluating method and significance of many parameters were expounded. The calculating methods of the key parameters were discussed including net radiation, aerodynamics resistance and canopy layer stomatic resistance, some problems were analyzed and some suggestions were given for practical application of this model in forest evaportranspiration research.

中文摘要： Penman—Monteith公式是在蒸散研究中应用最多，也是变化形式最多的方法，该文在对目前Penman—Monteith模型在森林下垫面中应用总结的基础上，阐述了其中众多参数的意义和常用的确定方法，着重探讨了影响该模型精确性的关键因子净辐射、空气动力学阻力和冠层阻力的计算方法，并分析了Penman—Monteith模型在实际应用中存在的一些问题，提出了该模型在今后森林蒸散研究中发展的思路。

Do you know, i need you to come back

你知道吗，我需要你回来

Yang yinshu、Wang xiangsheng、Li decang,The first discovery of haemaphysalis conicinna.

1〕 杨银书，王祥生，李德昌。安徽省首次发现嗜群血蜱。