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森林     
相关语句
  forest
    Study on Management System and Policy of Forest Tourist Resources in China
    我国森林旅游资源管理体制与政策研究
短句来源
    A Primary Study on the Carrying Capacity of Forest Resource,Environment and Population
    森林资源环境人口承载力初步研究
短句来源
    Study On the Equilibrium of Forest Eco-economic System
    试论森林生态经济系统的平衡
短句来源
    A Study on the Landscape Pattern of Xishan National Forest Park,Beijing
    北京西山国家森林公园景观格局的初步研究
短句来源
    EVALUATION OF PRESENT SITUAT10N AND TREND PREDICTION OF CHINA'S FOREST PARKS
    中国森林公园现状评价和发展预测
短句来源
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  forestry
    Research on Economic Problem of Forestry Carbon Sink
    森林碳汇经济问题研究
短句来源
    FOREST RESOURCE AND FORESTRY CONSTRUCTION ON THE SLOPE FACING NORTH OF QILIAN MOUNTAIN
    祁连山北坡森林资源与林业建设
短句来源
    SUSTAINABLE DEVELOPMENT OF FOREST RESOURCES IS THE PRESUPPOSITION AND THE END-RESULT OF THE SUSTAINABIE DEVELOPMENT OF FORESTRY
    森林资源的可持续发展是林业可持续发展的前提与归宿
短句来源
    Forestry Resources and Their Exploitation and Use in Anji County
    安吉县森林资源的开发与发展战略
短句来源
    Practically Strengthening Management of Forestry Resources and Enhancing Evidence Felling Rate
    切实加强森林资源管理 提高凭证采伐率
短句来源
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  in forest
    Several legal problems existing in forest protection in our country
    论我国森林保护中的若干法律问题
短句来源
    Plant resources in Forest Park of Dalushan Islet in Zhejiang and their exploitation and utilization
    浙江大鹿山森林植物资源及发展利用
短句来源
    Robust estimation and analysis of investigation data in forest resource.
    森林资源调查数据的稳健估计及分析
短句来源
    Application of Aartificial Neural Network in Forest Resource Management
    人工神经网络在森林资源管理中的应用
短句来源
    Application of Digital Elevation Model in Forest Management
    数字高程模型及其在森林资源调查中的应用
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  forest garden
    Quantitative Evaluation on the Tourism Resources Value of Gansu Forest Garden
    甘肃省森林公园旅游资源价值综合定量评价研究
短句来源
    Fuzzy theory and method is used by the article in order to build the quantitative evaluation's indicator system and assessment standard of forest garden tourism resources value. Then confirm the weight of all kinds of factors and make statistically calculation of evaluated result graded by experts. .
    运用模糊决策的理论和方法,通过建立森林公园旅游资源价值定量评价的指标体系和量化评判标准,确定影响森林公园旅游资源价值各因子的权重,将经过专家打分后的评判结果进行统计计算,对甘肃省62处森林公园的资源吸引力指数、可开发利用指数和综合指数进行了定量评价。
短句来源

 

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      forest
    Moreover, a backward reasoning forest of a reachable marking was generated for explicitly representing reachable paths in RBS.
          
    Growth Model System for National Continuous Forest Inventory
          
    A Growth Model System is developed for data updating and forecasting of the national continuous forest inventory.
          
    Its design is based on the inherent forest growth laws, and its parameters are estimated by modern regression methods.
          
    It is suitable for forest resource information updating and forecasting for a large region, e.g., a province.
          
    更多          
      forestry
    According to the international methods of pest risk analysis and urban forestry characteristics in Beijing, a quantitative risk assessment system in Beijing for three primary non-indigenous pests was proposed.
          
    Eco-emigration and the return of marginal agricultural land to forestry can be practiced.
          
    This study was conducted at Maoershan Forest Research Station (45°21'-45°25'N, 127°30'-127°34'E) owned by Northeast Forestry University in Harbin, northeast China.
          
    The Maoershan forestry centre is situated in the Zhangguangcai Mountain of the Changbai mountain range.
          
    Following the principles of runoff-collecting forestry and applying the forest structure investigation results, the authors developed a formula to calculate appropriate density for forests on the basis of different diameters at breast height (DBH).
          
    更多          
      in forest
    Nitrate has been recognized as the dominant mineral nitrogen form in most agricultural soils and the main nitrogen source for crops, but it is not usually the case in forest ecosystems.
          
    Fine root lifespan and turnover play an important role in carbon allocation and nutrient cycling in forest ecosystems.
          
    Soil properties in forest gaps and under canopy in broad-leaved Pinus koraiensis forests in Changbai Mountainous Region, China
          
    Results showed that compared with farmland watersheds, runoff generation time in forest watersheds was delayed remarkably, and peak flow was reduced greatly, which indicates that vegetation played an important role in holding and absorbing rainfall.
          
    The two forests differ in forest humus layer; it is deep in the Ailao forest while little is present in the Xishuangbanna forest.
          
    更多          
      forest garden
    Live traps, contaminated by secretions from either males or females of the wood mouse (Apodemus sylvaticus) and untreated were set in triplets at trapping points in a forest garden near Munich from June until October 1986.
          
    The paper treats the forest gardens of Uva as a case study from which some general conclusions can be drawn with respect to the conscious development of forest garden systems elsewhere in the tropics.
          
    The analog forest is a perennial polyculture which, like the traditional forest garden, is structurally and functionally analogous to the natural forest.
          
    One such system is the forest garden developed by residents of several villages in the Gunung Palung region of West Kalimantan, Indonesia.
          
    The forest garden system of Saparua island Central Maluku, Indonesia, and its role in maintaining tree species diversity
          
    更多          


    Consisted of Bawang Mtn.,Balang Mtn.,Jiajin Mtn.and Erlang Mtn.,from north to south,the Qionglai Mountain Range is the natural dividing line between the Sichuan Basin and the tibetan plateau.Giant pa- ndas are distributed in forests below 4,000m above the sea—leve.Their habitat varies according to the elevation,pandas in the Mountain Ra- nge Occupy 50% of the estimated total number in Sichuan,with the mo- st concentrated distribution in Baoting County and the adjoining Wolo- ng Natural Reserve.

    邛崃山自北向南的主要山脉有霸王山、巴朗山、夹金山和二朗山,是四川盆地和青藏高原的天然地理界线。大熊猫分布于海拔4,000米以下的森林中,随着海拔高度不同,它们的隐蔽条件和食物基地也有差异。境内大熊猫的数量约占四川省总额的50%,主要产区有宝兴和卧龙自然保护区。

    Mount Tuoliang is 2281 metres above sea level in height. It is apparent presenting vertical vegetation distribution. There is rich organic matter and hi- gher natural water-bearing in soils of deciduous conifer arbor and shrub fo- rests. The soils are suitable for the earthworm living and propagating. Average number of the worm is 15. 4 and 13. 6 per sqare metre respectively, and 3 in top meadow. On bare slope, the sand soil is sterile and dry, and does not adapt to the worm. Allolobophora Sp. is the dominant...

    Mount Tuoliang is 2281 metres above sea level in height. It is apparent presenting vertical vegetation distribution. There is rich organic matter and hi- gher natural water-bearing in soils of deciduous conifer arbor and shrub fo- rests. The soils are suitable for the earthworm living and propagating. Average number of the worm is 15. 4 and 13. 6 per sqare metre respectively, and 3 in top meadow. On bare slope, the sand soil is sterile and dry, and does not adapt to the worm. Allolobophora Sp. is the dominant species in Hebei mountainous forests, distributing widely and suitable for cirtificial feeding and domestication.

    坨梁山海拔2281米,植被垂直分布明显,落叶针叶林和落叶乔木、灌木林的土壤有机物丰富,自然含水率较高,适合异唇蚓栖息和繁殖,平均每平方米15.4条和13.6条。山顶草甸3条。秃山坡为风沙土,贫瘠干燥,不适合该种蚯蚓生存。异唇蚓为我省山地森林的优势种,分布广,数量多,适应性强,适合人工饲养和驯化。

    Sichuan province is one of importent forest region in China. In past time, had a much achievment but a serious Consequence. This paper puted forward some prospsal for future development of Sichuan forestry.

    四川是全国重点林区之一。林业生产在全国举足轻重,同时也是长江水源的涵养区域。过去由于多种原因导致森林资源急剧减少,生态环境日益恶化。为了实现森林的永续利用,必须做到:把经济效益与生态效益统一起来,防护林与经济林并重;逐步实现从利用天然林向人工林的战略转移;对森林资源开源节流:重视技术逐步与智力开发;解决好资金聚集和使用,以适应四川林业发展战略的要求。

     
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