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forest properties
相关语句
  森林经理
     Developing forest management and control, adjusting stand’s structure of each category of forest, monitoring dynamic of forest resource and assessing forest properties are the urgent demand for forest management with the development of market-oriented economy, the reform of forest management system and the further development of legal system.
     以小班为单位开展森林经营、管护、各林种林分结构调整、森林资源动态监测、森林资产评估 ,是我国市场经济、林业经营体制改革、法制建设向纵深发展而对森林经理工作的急切需要。
短句来源
  “forest properties”译为未确定词的双语例句
     Influence of the Forestry Revenue Policy on the Evaluation of Forest Properties
     林业税费变化对林木资产评估价格的影响
短句来源
  相似匹配句对
     forest .
     林。
短句来源
     Discussion of Combustion Properties of the Secondary Forest
     次生林燃烧性的探讨
短句来源
     The Properties of Laccase and Its Application in Forest Product Industry
     漆酶特性及其在林产工业中的应用研究进展
短句来源
     Prince of forest
     “森林骄子”鄂伦春
短句来源
     PROPERTIES OF BIPOLARONS
     双极化子的特性
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  forest properties
There are many factors that determine what forestry activities forest owners carry out in their forest properties and that influence whether forest owners engage in entrepreneurial activity.
      
The main problems for private forest owners are that the forest properties are too small to achieve efficiency, owners lack money for silviculture activities and there is a heavy bureaucratic system for forest-related activity documentation.
      
There are, for example, successful shareholders and businessmen wishing to invest money in forest properties.
      
Another reason might be that money invested in forest properties is not subjected to taxes on capital yield.
      


This study focuses on the upper reach of the Yangtze River, the upper reach of the Yellow River, and the headwater areas of major rivers in the Qilian Mountains within Gansu Province to understand the effect of forest coverage on soil and water loss. Exacerbating soil erosion associated with waterpower, especially waterpower of intensive rainstorms manifests the deteriorating environments in Gansu. The erosion intensity is influenced by the average rainfall intensity, forest coverage, and spatial patterns of...

This study focuses on the upper reach of the Yangtze River, the upper reach of the Yellow River, and the headwater areas of major rivers in the Qilian Mountains within Gansu Province to understand the effect of forest coverage on soil and water loss. Exacerbating soil erosion associated with waterpower, especially waterpower of intensive rainstorms manifests the deteriorating environments in Gansu. The erosion intensity is influenced by the average rainfall intensity, forest coverage, and spatial patterns of forest distributions. The resistance of forestland to soil erosion is different among different forest types and stand ages. \;Soil porosity determines the ratio of soil infiltration to surface runoff and the porosity is thus indirectly determines the erosion intensity during rainstorms. The porosity itself is controlled by such factors as vegetation type, coverage, density, and spatial patterns. Among all land covers, forestland is the most resistant to soil erosion. The forest functions in resisting soil erosion, reducing flooding and increasing soil water content are achieved through enhancing soil infiltration and abating surface runoff. As a key factor in forest hydrology, soil porosity of forestland is different in different forest types, slope positions, stand ages, logging intensities and land alterations. \;The forestland is obviously able to retain more surface runoff. The maximal water capacity and water conservation capacity of forests increase in the following order: bush wood < secondary forest or planted forest < climax community of Abies faxoniana forest. These two capacities vary with different soils or soil tops and increase in the following order: deadwood layer < moss layer < forest soil. If an optimal state of forest quality and distributing pattern is achieved, the forest covered area or forest coverage has an optimal protective effect. The optimal state refers to an optimal combination of the following factors: vegetation type, vertical layers, structure and texture, health status. The enhancement of the protective effect by improving the optimal state and optimizing the distributing pattern can be controlled through artificial interventions, although the natural ecological environment is relatively steady and difficult to be influenced.\; The influence of ecological environments upon forest protection ability of soil and water is realized through different protection ability of various forest types. To achieve the optimal protective effect, expanding forest coverage should be combined with adjusting forest properties to gain an optimally coupled state between ecological environments and properties of newly planted and already existed forest. Through gaining this coupling state, the optimal functions of forest, improving ecological environment and accelerating economic development, can be achieved. \;The forest coverage of optimal protective effect can be computed on the base of water balance between the precipitation and the maximum water capacity. In this study, the total soil porosity is used as the maximum water capacity. Suppose that the computed percentage of forest cover is F (%), the maximum diurnal precipitation is P (mm), the adopted soil thickness is T (mm), the soil porosity is Pt (%), then F =〔 P÷(T×Pt)〕 ×100%. This is more or less a reliable and operational way to determine the forest coverage of optimal protective effect. Equally important is that this method can be quickly and easily used to provide scientific references for establishing environmental policies.

以甘肃长江流域、黄河流域及内陆河源头地区的祁连山地等三大流域为对象 ,就水土流失区最佳防护效益森林覆盖率进行了研究。指出 :( 1 )甘肃的这三大流域生态环境恶化的主要表现为水力侵蚀形成的水土流失。一日或一次性大暴雨至特大暴雨过程是造成土壤侵蚀的主要原动力。这种侵蚀力的强度受平均雨强的大小、林地面积多少、林分类型的空间分布格局等因素影响。 ( 2 )土壤的总孔隙度是承载降水的主要蓄水库 ;土壤的总孔隙度决定了暴雨降水量下渗和形成地表径流的比重 ,因而也间接地决定了暴雨对土壤的侵蚀强度 ;土壤的总孔隙度又受土壤表面生长的植被类型及其覆盖度、内涵质量、空间分布格局等影响。林地是各种植被类型的地类中对这种侵蚀的抵抗力最优的地类之一。 ( 3)林地具有明显阻滞地表径流的作用。若一个流域或更大范围内的森林类型、层次、结构、长势等森林内涵质量、分布格局均处于最优状态 ,则森林的面积或森林覆盖率将发挥出最佳防护效益 ,此时的森林覆盖率称为最佳防护效益森林覆盖率。 ( 4 )生态环境对森林防护能力的影响是通过不同森林防护类型能力的差异反映出来的。 ( 5 )应用降水量与土壤饱和蓄水量之间水量平衡原理 ,进行最佳防护效益森林覆...

以甘肃长江流域、黄河流域及内陆河源头地区的祁连山地等三大流域为对象 ,就水土流失区最佳防护效益森林覆盖率进行了研究。指出 :( 1 )甘肃的这三大流域生态环境恶化的主要表现为水力侵蚀形成的水土流失。一日或一次性大暴雨至特大暴雨过程是造成土壤侵蚀的主要原动力。这种侵蚀力的强度受平均雨强的大小、林地面积多少、林分类型的空间分布格局等因素影响。 ( 2 )土壤的总孔隙度是承载降水的主要蓄水库 ;土壤的总孔隙度决定了暴雨降水量下渗和形成地表径流的比重 ,因而也间接地决定了暴雨对土壤的侵蚀强度 ;土壤的总孔隙度又受土壤表面生长的植被类型及其覆盖度、内涵质量、空间分布格局等影响。林地是各种植被类型的地类中对这种侵蚀的抵抗力最优的地类之一。 ( 3)林地具有明显阻滞地表径流的作用。若一个流域或更大范围内的森林类型、层次、结构、长势等森林内涵质量、分布格局均处于最优状态 ,则森林的面积或森林覆盖率将发挥出最佳防护效益 ,此时的森林覆盖率称为最佳防护效益森林覆盖率。 ( 4 )生态环境对森林防护能力的影响是通过不同森林防护类型能力的差异反映出来的。 ( 5 )应用降水量与土壤饱和蓄水量之间水量平衡原理 ,进行最佳防护效益森林覆盖率的计算。土壤饱和蓄水量可用土壤的总孔隙?

Developing forest management and control, adjusting stand’s structure of each category of forest, monitoring dynamic of forest resource and assessing forest properties are the urgent demand for forest management with the development of market-oriented economy, the reform of forest management system and the further development of legal system. The method of sample survey for unequal belt-transect was used in the resource survey for fixed compartment of category of forest division. The...

Developing forest management and control, adjusting stand’s structure of each category of forest, monitoring dynamic of forest resource and assessing forest properties are the urgent demand for forest management with the development of market-oriented economy, the reform of forest management system and the further development of legal system. The method of sample survey for unequal belt-transect was used in the resource survey for fixed compartment of category of forest division. The precision was assured to be more than 90 percent, which can be used as reference for related departments.

以小班为单位开展森林经营、管护、各林种林分结构调整、森林资源动态监测、森林资产评估 ,是我国市场经济、林业经营体制改革、法制建设向纵深发展而对森林经理工作的急切需要。笔者对区划林种经营固定小班 ,采用不等长样带抽样调查法进行了资源调查 ,确保实际精度≥ 90 %。该研究结果可供有关专业院队、资源管理部门参考。

Based on analyzing evolution and the present status of forestry taxation system in Fujian Province, the periodic change tendencies about forest revenue were discussed. Moreover, a comparative analysis was made on the influences upon the evaluation of forest properties from two types of tax and fee related to timber consumption, and finally some beneficial suggestions were put forward to reform the present policy of forestry revenue system.

从福建省林业税费制度的沿革与现状分析入手,分析了林业税收阶段性的变化趋势,并对两种税费(主要是木材税费)对森林资产评估产生的不同影响进行分析研究,提出林业税收政策调整的有关建议.

 
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