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- 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。
- 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。
- Abstract： The middle-long term planning and decision-making for forest ecological system management was studied taking Dongfanghong forest farm Dailing forest bureau for example. 摘 要： 以带岭林业局东方红林场森林为例,进行了中、长期的森林生态系统规划决策的研究。
- The Castanopsis carlesii community is one of the most important vegetation types in the forest ecological system of Xiwang Mountainous area and Doupeng Mountainous area. 在西望山、斗篷山森林生态系统中,小红栲群落是其中重要的类型。
- Stand biomass which is the foundation of researching many forestry and ecology problems is a basic quantity character of the forest ecological system. 摘要林分生物量是森林生态系统最基本的数量特征，是研究许多林业问题和生态问题的基础。
- These techniques will influence speed querying data, variables and models of spatial analyst for forest ecological system selecting, model level conversion and efficiency of spatial analyst. 这些方法将影响数据查询速度、森林生态系统空间分析变量和模型的选择、模型尺度转换及空间分析效率。
- 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。
- Analysis on importance of forest ecological system in sustainable development 浅析森林生态系统在可持续发展中的重要作用
- Basic conceptions and characteristics of the relatively complete forest ecological system 比较完备的林业生态体系的基本概念和特征
- Construction Technology of Yichang City's Forest Ecological System 宜昌市城市森林生态系统建设技术
- Principal Component Analyses of Soil in a Forest Ecological System Invaded by Bursaphelenchus Xylophilus Disease 松材线虫入侵林地土壤因子相关性分析
- The regional ecological system is fragile. 区域生态系统脆弱。
- Indirect Economic Loss Evaluation of Effect of Alien Invasive Species on Forest Ecological System 外来入侵物种对森林生态系统影响间接经济损失评估
- Protection utilization of natural forest resources and management of forest ecological system of Canada 加拿大天然林资源的保护利用与森林生态系统经营
- Study on Supervisory System Index in the Construction of Forest Ecological System 林业生态体系建设的监测指标体系研究
- Keep to the law to establish asian long-horn beetle defense system with harmonious forest ecological system as main body 试论以和谐森林生态系统为主体的杨树天牛防御体系的建立
- The protection of the ecological system was further enhanced. 生态环境保护力度加大。
- Economic Growth and Ecological System: Balance or Both Winning? 经济发展与生态维护:权衡抑或双赢?
- 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。
- Ecological Service Functional Assessment on Forest Ecological System of Kunshan City 城市森林生态系统生态服务功能的评价
