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- Analysis and Outlook of Research on Economic Loss Evaluation Associated with Biological Invasion to Forest Ecological Function 生物入侵对森林生态服务功能经济损失评价研究分析与展望
- Mu Ling Forest Bureau Forest Ecological Functions Assessed 穆棱林业局森林生态功能评定
- forest ecological function 森林生态系统
- This thesis draws up the function of Populus euphratica forest ecological system and so on economy and Society furtion to native and all round areas by evaluating its ecological beneficial. 本文通过对胡杨林生态效益的评价,提出胡杨林不仅在生态系统方面有重要作用,而且对当地及周边地区的经济、社会发展也有不可替代的作用。
- Landscape Ecological Functions of Field Boundary. 试论农田边界的景观生态功能
- The government has paid special attention to the construction of forest ecological projects. 中国政府特别重视林业生态工程建设。
- Coarse Woody Debris (CWD) is an important component in forest ecosystems and provides important and unique ecological functions. 粗木质残体(CWD)是森林生态系统中的重要组成部分,具有十分重要和独特的生态功能。
- Of the ten national-level and provincial-level nature reserves, most belong to the primeval forest ecological system. 还有十多个国家级和省级的自然保护区,其中不少是原始森林生态系统。
- Three-dimensional ecological characters of urban green space and its ecological function. 城市绿地的三维生态特征及其生态功能。
- Ecological Function Analysis for Planting Subsystem in Xiaozhangzhuang Village of Yingshang County, Anhui Province. 安徽省颖上县小张庄种植业子系统生态功能分析
- The externality theory is a basic theory of explaining economy activities and forest ecological environment problems. 摘要本外部性理论是解释经济活动与森林生态环境问题的基础理论。
- Philosophically, its subject is confined to nature persons while its object is the environmental ecological function. 甚至有人提出了“环境权这个概念是否真的有必要?
- The paper summarized ecological programming study at home and broad and went through study of optimal forest ecological programming in Hainan province. 在对国内外生态规划研究综述的基础上,通过对海南省最优森林生态规划的研究指出:要使海南省林地、林木和森林环境服务的效益最大,必须调整用材林、防护林、特用林和竹林的面积比例。
- But ,the disturbances from human destroyed the ecological environment of elm woodland steppe seriously and influenced its special ecological function. 然而 ,由于人类的干扰 (如毁林开荒、过度放牧、甚至片面地建立人工林群落等 ) ,不同程度地破坏了榆树疏林的生态环境 ,影响了其特有的生态作用。
- This research provides one scientific and effective method to solve the complex problem how to evaluate index system of forest ecological harvesting. 本研究为解决森林生态采伐系统评价这一复杂问题提供了一种科学、有效的评价方法和工具。
- The paper discussed the importance and relationship between Hanzhong forest ecological construction and the project of south-to-north water diversion. 应用突变多准则评价法对南水北调中线水源工程项目的多方案比选作出评价决策。
- The theories and methods of urban ecological function zoning are proposed and a case of Changchun is researched in the paper. 城市生态功能区划是建设生态城市的基础和科学依据。
- Road afforesting. Construct a traffic corridor network combining with ecological function, traffic function and landscape function. 道路绿化,建设符合生态功能,交通功能、景观功能的交通廊道网络组织。
- This article mainly summarized the definition and type of halophyte,its root,stem,leave adaptation to salt and its ecological function. 本文主要综述了盐生植物的定义及类型,盐生植物的根、茎、叶对盐渍土壤的适应特征、适应方式以及生态作用等。
- Red turpentine beetle (Dendroctonus valens, RTB), which was probably introduced from USA, is one of the most important invasive pests in Chinese forest ecological system. 摘要红脂大小蠹是我国重要的外来入侵害虫,给我国林业生产和国土生态安全带来巨大危害。