搜索结果: 1-15 共查到“知识库 森林经理学其他学科”相关记录67条 . 查询时间(3.526 秒)
中国森林公安保护森林与野生动物资源绩效分析
森林公安 森林与野生动物 资源保护绩效 中国
2021/3/5
根据行为动机，可将目前中国大陆境内侵害森林与野生动物资源的违法行为分为获利型和满足型2类。2类违法行为的选择可能性除了具有共同条件之外还具有各自不同的条件。法治约束可有效弱化或消除2类违法行为的选择可能性，其中公安机关查处侵害森林与野生动物资源的警务绩效尤为明显。自20世纪80年代以来，中国森林公安在森林与野生动物资源保护中发挥了重要作用。针对目前侵害森林与野生动物资源严重违法行为仍未得到有效遏制...
Current possibilities of using Norway spruce (Picea abies [L.] Karst.) in forest regeneration in the air-polluted region of the northeastern Kru歯?hory Mts.
air pollution forest regeneration Norway spruce
2015/3/16
The paper analyses possibilities of repeated use of Norway spruce (Picea abies [L.] Karst.) in the regeneration of existing Norway spruce stands, in the regeneration of large-area clearcuts, and in th...
Economic analysis of forest joint-stock companies in the CzechRepublic in 1992–2000
forestry economic reform joint-stock companies
2015/1/29
The basic principle of the economic reform of state forests of the CzechRepublic after 1990 was to separate ma-nagement in forests from the implementation of production activities. A state enterprise ...
Needle traces as indicators of growing conditions in Scots pine (Pinus sylvestris L.)
needle retention needle density environmental and anthropogenic impacts
2015/1/29
Needle retention (number of needle sets) and needle density (number of needle pairs per centimeter of shoot) were surveyed on Scots pines in five forest regions of Slovakia. The Needle Trace Method (N...
The influence of particle composition in a three-layer particleboard on its physical and mechanical properties
particleboard physical and mechanical properties density
2015/1/29
The paper deals with results of research aimed at the problem of the maximum possible amount of added sawdust to standard particles into surface and central layers of three-layer particleboards in ord...
三江平原毛果苔草无性系种群根茎的年龄结构
三江平原毛果苔草 无性系种群根茎 年龄结构
2011/9/1
为了揭示毛果苔草无性系种群营养繁殖中的某些策略，为湿地植物的保护和保育工作提供科学依据，笔者利用分蘖节营养繁殖世代数，对毛果苔草根茎龄级进行判断和划分，统计毛果苔草根茎长度和生物量的年龄结构，并分析各龄级根茎数量特征的变化规律。结果表明，毛果苔草无性系种群根茎的最大存活年龄为9龄；根茎的长度、生物量皆以2~6龄级为主，结构较稳定；生长季内，1、9龄级变化较大：1龄级根茎在果期开始出现，并迅速增加；...
An integrated management system for the Douglas-fir tussock moth in southern British Columbia
biological control defoliation Douglas-fir tussock moth forest pest management interior Douglas-fir nuclear polyhedrosis virus
2010/8/31
An integrated, long-term system to detect and treat infestations of Douglas-fir tussock moth in the Southern Interior of British Columbia was successfully implemented between 1984 and 1999. All aspect...
Integrating soil conservation, water production and timber production values in forest management planning using linear programming
Linear programming forest ecosystem soil conservation water production timber production net present value
2010/9/14
Forest management focuses on the control of forest ecosystems based on the sustainable use of forest values without damaging ecological integrity. Although, timber would easily be characterized and va...
森林经理工作实施需要良好的内部机制和外部环境，森林经理目标、经营对象和指导原则都体现着博弈的实质，应该引入博弈理论实现资源条件与外部环境良好协调。提出了森林经理工作实施过程存在国家、区域、企业（个体）三者博弈的规律，应当从生态、社会效益的目标评估与外部经济内部化等方面实施博弈思维转型，以完善森林经理的调查、规划与效益评价体系。
Development, Practice, and Evaluation of a Forest Educational Program on the Subject of Mt. Fuji: Problems and Their Solutions in Conducting Forest Education for Primary and Secondary Schools
education effect education for school forest education multiple functions of forest questionnaire survey
2009/8/28
An educational project was conducted both to understand problems in carrying out a forest educational program in primary and secondary schools and to find their solutions. Our program aimed to let stu...
Improved Yield Prediction Information for Sugi (Cryptomeria japonica) Plantations Applied to Long-rotation Management in Kagoshima Prefecture
long-rotation management site quality curve stand-density control diagram sugi (Cryptomeria japonica) plantations yield table
2009/8/27
To predict the yield of sugi (Cryptomeria japonica) plantations on a long rotation in private forests in Kagoshima Prefecture, the stand-density control diagram, site quality curve, and yield table we...
Effective Forest Management to Reduce Fine Sediment Production and Delivery
forest cutting forest management forest road system riparian buffer strips suspended sediment
2009/8/27
In order to develop effective forest management practices which reduce fine sediment production and delivery, this paper reviews how forest operations can affect suspended sediment discharge. Cutting ...
Mitigating Effects of Broadleaved Forest Fragmentation on Birds:Proposal of Plantation Matrix Management
habitat loss landscape ecology patch area stand composition stand structure
2009/8/27
I reviewed the effects on forest birds of replacing broadleaved forests at the patch and landscape levels, with emphasis on replacement by plantations. I proposed methods mitigating such effects. Redu...
A Forest Management Plan for a Sustainable Forest Management A Study of Forestry in Kuma-cho,Ehime Prefecture,Using a Forest Resources Prediction Model
forest resources prediction model Kuma-cho Ehime Prefecture normal forest rotation sustainable forest management
2009/8/24
It is necessary to establish stable timber production in order to have a sustainable forest. We investigated the stabilizing effect of two forest management policies: transformation into a normal fore...