共查询到19条相似文献,搜索用时 234 毫秒
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该文论述了生物多样性的含义,分析了衡水市生物多样性总体现状,提出了生物多样性保护与建设的原则,生物多样性保护与建设的基本思路。针对衡水市生物多样性保护与建设规划,生物多样性保护行动措施及生物多样性管理对策进行了深入探讨研究,提出了具体实施措施。 相似文献
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鸡足山自然保护区具有丰富的生物多样性,文中对鸡足山自然保护区生物多样性研究的文献资料进行了整理和回顾,综述了保护区生态系统多样性、物种多样性、遗传多样性等方面的研究现状,剖析了存在的生物多样性本底不清、监测体系尚未建立、缺乏对生物多样性与文化多样性关系以及生物多样性有效管理与合理开发利用的研究等问题.提出今后急需开展构建生物多样性监测网络、生物多样性资源合理利用等方面的研究工作. 相似文献
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生物多样性保护:全球关注的热点问题 总被引:4,自引:0,他引:4
本文较详细地论述了生物多样性、物种多样性、遗传多样性及生态系统多样性的概念,中国生物多样性的地位,世界及中国生物多样性面临的现状,世界及中国生物多样性保护采取的策略。本文以大量的实例和数据,结合我国生物多样性所面临的诸多问题,提出了开展生物多样性保护和研究所需采取的必要措施。 相似文献
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森林生态系统的生物多样性保护问题 总被引:3,自引:0,他引:3
生物多样性的保护和可持续的利用对森林的保护与可持续经营具有特别重要的意义,生物多样性保护在森林生态系统管理中也越来越显示其重要性。讨论全球森林生态系统生物多样性保护的发展趋势及森林生态系统生物多样性保护的理论和对策,以及生物多样性指数在评价生物多样性管理的应用,提出我国生物多样性保护研究应该加强的方向。 相似文献
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论生物多样性与林业发展 总被引:4,自引:0,他引:4
林业的发展与生物多样性密切相关,开展生物多样性的研究与保护,对我省林业发展有着十分重要的意义。该文介绍了生物多样性概念及其重要意义,论述了森林与生物多样性,并论述了生物多样性是现代林业发展的新趋势,提出山东省林业实施生物多样性的对策。 相似文献
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森林认证对生物多样性影响研究进展 总被引:1,自引:1,他引:0
维护森林生态系统的完整性,尤其是保护生物多样性是开展森林认证的重要目的之一。文中概述2大国际森林认证体系(FSC和PEFC)认证标准中有关生物多样性保护的要求,分析森林认证对生物多样性的影响,探讨现有认证标准与实现生物多样性保护之间的差距。分析表明,森林认证对生物多样性的保护具有积极作用,森林认证可作为促进生物多样性保护的有力工具;由于受到诸多因素的影响,在全球认证体系中生物多样性保护标准和指标的确立普遍缺乏科学数据支撑,不同区域差异较大,且生物多样性的监测和评估相对滞后。森林认证对全球森林资源的可持续发展具有重要的意义,生物多样性保护工作将成为推动森林认证持续发展的重要力量。 相似文献
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Contribution of large-scale forest inventories to biodiversity assessment and monitoring 总被引:1,自引:0,他引:1
Piermaria Corona Gherardo Chirici Ronald E. McRoberts Susanne Winter Anna Barbati 《Forest Ecology and Management》2011,262(11):2061-2069
Statistically-designed inventories and biodiversity monitoring programs are gaining relevance for biological conservation and natural resources management. Mandated periodic surveys provide unique opportunities to identify and satisfy natural resources management information needs. However, this is not an end in itself but rather is the beginning of a process that should lead to sound decision-making in biodiversity conservation. Forest inventories are currently evolving towards multipurpose resource surveys and are broadening their scope in several directions: (i) expansion of the target population to include non-traditional attributes such as trees outside the forest and urban forests; (ii) forest carbon pools and carbon sequestration estimation; (iii) assessment of forest health; and (iv) inclusion of additional variables such as biodiversity attributes that are not directly related to timber assessment and wood harvesting.There is an on-going debate regarding the role of forest inventories in biodiversity assessment and monitoring. This paper presents a review on the topic that aims at providing updated knowledge on the current contribution of forest inventories to the assessment and monitoring of forest biodiversity conditions on a large scale. Specific objectives are fourfold: (i) to highlight the types of forest biodiversity indicators that can be estimated from data collected in the framework of standard forest inventories and the implications of different sampling methods on the estimation of the indicators; (ii) to outline current possibilities for harmonized estimation of biodiversity indicators in Europe from National Forest Inventory data; (iii) to show the added value for forest biodiversity monitoring of framing biodiversity indicators into ecologically meaningful forest type units; and (iv) to examine the potential of forest inventory sample data for estimating landscape biodiversity metrics. 相似文献
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ZHANG YingCollege of Economics Management Beiiine Forestry University Beiiine . P. R. China 《中国林业科技(英文版)》2003,(2)
By reference of the evaluative data of forest biodiversity changes in China from 1973 to 1998, the variation analysis models of the pressure index of forest biodiversity, forest ecosystem diversity and forest species diversity, as well as the general index of forest biodiversity are developed using Statistical Package for the Social Sciences (SPSS). Furthermore established is the relevant model of mutation of forest diversity potential functions. This paper points out that changes of forest biodiversity are generally unsteady, especially for the pressure index . The ecosystem diversity index and the species diversity index always fluctuate, resulting in the erratic changes or mutations of general index of forest biodiversity in China. 相似文献
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我国森林生物多样性变化的评价研究 总被引:11,自引:0,他引:11
应用控制论中“黑箱”理论的原理 ,参考经济合作与发展组织 (OECD)对环境政策影响的评价和芬兰森林资源核算的研究 ,创造性地使用压力 -状态响应评价法 ,设计了森林生物多样性变化评价的框架、指标和计算公式 ,并使用该方法对我国 1973年 - 1998年的森林生物多样性的变化进行了评价。评价结果表明 :1973年 -1998年 ,我国森林生物多样性的压力越来越大 ;森林生态系统多样性先逐渐上升 ,尔后又逐渐下降 ;森林物种多样性和森林生物多样性总体趋势增加 ,但第四次资源清查之后有所下降 相似文献
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ZHANG YingCollege of Economics Management Beijing Forestry University Beijing . P. R. China 《中国林业科技(英文版)》2003,(3)
According to the evaluative data of forest biodiversity variation in China from 1973 to 1998, not only the gray model GM( 1,2), but also the status spatial characterization model with the optimal control model for forest biodiversity variation is developed by using some mathematic approaches and knowledge in economic cybernetics. Furthermore, the structural characteristics of forest biodiversity variation are analyzed. The paper points out that the variation of forest biodiversity is instable, but it can be controlled and known certainly. The close-loop feedback controlling and the optimal controlling are also existent. That is to say, the preestablished targets of forest biodiversity variation can be met by adjusting the policy's variables, thus alleviating the pressure of forest biodiversity. The variation of forest biodiversity can be shown by the pressure index of variation. This paper finally shows that when the pressure index of forest biodiversity is a constant 100, the optimal movement curves ar 相似文献
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燕山山地华北落叶松人工林生物多样性研究 总被引:1,自引:0,他引:1
生物多样性与生境因子、林分自身因子、经营措施之间的动态变化规律研究,是开展森林经营的重要基础。通过典型样地调查,运用ForStat2.0统计方法,对燕山山地木兰林管局华北落叶松人工林生物多样性与生境因子、林分因子、经营措施之间相关系数,以及生物多样性各指数随林龄、郁闭度的变化趋势进行系统分析。研究表明:海拔、坡度、坡向、坡位、林龄、密度、郁闭度、混交比是影响该地区物种多样性的重要因子。生物多样性指数随林龄、郁闭度的变化趋势基本符合偏正态分布。据此认为森林经营管理过程中,通过及时调整林分密度,将有利于生物多样性保护,从而提高森林生态系统稳定性。 相似文献