共查询到17条相似文献,搜索用时 62 毫秒
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为方便林业有害生物监测和防治工作,山西省林业有害生物防治检疫局与重庆科美达云计算服务有限公司合作,开发建成了山西网络森林医院。介绍了山西网络森林医院的功能与使用方法。 相似文献
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重视森林健康 营造健康森林 总被引:3,自引:0,他引:3
人类需要健康的身体,森林需要稳定的生态系统。森林健康的基本内涵为:通过对森林的科学经营,实现森林生态系统的稳定性、生物多样性,增强森林自身抵抗各种自然灾害的能力,满足现在和将来人类所期望的多目标、多价值、多用途、多产品和多服务的需要。近几年来,通辽市气候变化异常,干旱少雨、地下水位明显降低。连续的干旱不但增加了植树造林难度,甚至使一些成林也出现了枯萎死亡现象,全市枯立木蓄积已达10万立方米以上,相当于一年的采伐总量。由于整体树势的减弱,造成通辽市杨树烂皮病大流行,每年发生达10万亩以上。面临如此严峻的形势,要实… 相似文献
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社会经济的持续快速发展,对生态环境的改善提出了更高的要求,人们对森林的期望产生了重大转变,森林被赋予更多的功能和价值。但由于自然和人为因素的干扰,现有森林质量不高,抗逆能力和系统的稳定性下降,影响了森林多功能效益的发挥,森林健康经营的思想应运而生。所谓森林健康就是森林生态系统能够维持其多样性和稳定性,同 相似文献
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近年来,我国已逐步认识并接受森林健康经营理念,重视培育多功能、多目标、生物多样性丰富的健康森林。内蒙古大青山地区通过多年的大规模封育保护和植树造林活动,森林面积迅速增加,森林覆盖率不断提高。但是仍有相当部分存在森林生态系统稳定性差、生物多样性程度较低、森林火险等级较高、病虫害时有发生等的现象,致使现有森林的生态服务功能远远不能满足生态建设的需求。为此,在内蒙古大青山地区开展森林健康经营研究,具有重要的现实意义。 相似文献
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森林健康是森林经营的一种新理念,也是新时期森林经营的方向和目标。提出了森林健康的概念、内涵和森林健康经营的实质,分析了国内外森林健康经营的实践,探讨了森林健康经营的途径与方法。 相似文献
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森林健康评价研究综述 总被引:5,自引:1,他引:4
文章介绍了森林健康的概念及其评价的研究进展,指出了影响森林健康状况的病虫害因素,探讨了森林健康状况评价指标体系的构建、评价的模型与方法以及评价的结果等,同时也对森林健康评价的趋势进行了展望。 相似文献
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国家森林资源连续清查森林健康监测方法的探讨 总被引:5,自引:0,他引:5
对国家森林资源连续清查森林健康的监测方法进行分析,指出现行监测方法的局限性,并结合欧洲和美国森林健康监测指标体系和森林资源调查监测同行的专家意见,提出新的监测指标和评价方法,为进一步完善有关国家森林资源连续清查森林健康监测的技术标准和调查方法提供参考。 相似文献
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对湖南发展森林康养产业的思考 总被引:5,自引:0,他引:5
本文从国内外森林康养的定义、发展现状、科学理论依据、医学证明等几方面分别阐述了对森林康养的认识,并在分析湖南发展森林康养的优势的基础上,提出了湖南森林康养产业发展的建议。 相似文献
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应用动态模型评价森林健康状况,预测树木或林分的生长与收获,以及在不同立地条件下采用某些特定的营林技术措施后林分的动态变化,一直是森林健康评价及管理的核心问题.当前在美国应用的两个森林动态评价及决策模型SIMPPLLE和MAGIS主要是用来评价当前林分状况、模拟林分发展以及预测不同经营管理方式下林分未来的动态变化状况,通过分析不同决策下森林植被的收获状况,选择最优化的管理措施以及实施措施的时间及地点制定最优化决策.针对现阶段中国森林健康评价中,以建立评价指标体系进行静态评价、缺乏空间信息数据和森林健康经营动态变化规律模型等问题,提出今后应针对中国实际情况开展切合实际的研究,开发出以促进森林健康经营为目的的动态预测模型和决策模型,提高森林健康的预测能力,完善森林健康经营综合评价技术体系. 相似文献
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Ritva Toivonen Erno Järvinen Karoliina Lindroos Anna-Kaisa Rämö Pekka Ripatti 《Small-Scale Forestry》2005,4(4):451-469
This paper investigates forest ownership objectives and the need for information among Estonian and Finnish private forest
owners based on two surveys. The motivation for the analysis is the fragmenting private forest ownership in Europe. The broad
lines of ownership objectives are found to be similar in both countries, and can be described under the dimensions of economic
objectives, intangible values, and products and activities provided by forests. In both countries, economic and intangible
objectives are considered important at the same time. Thus forest owners can be described as multi-objective. The economic
objectives are ranked as somewhat more important than non-economic objectives in Estonia, but not in Finland. Estonian forest
owners most strongly emphasise information about legal and economic matters, including forest taxation and forest health issues,
while Finnish forest owners emphasise information about wood markets and forest taxation. Differences between the two countries
may be related to private ownership being relatively new in Estonia. Some generalisations may be drawn for European forest
policy. Overall, private forest owners need both information about economic issues and personal advice on how to manage forests
with regard to their individual and multiple objectives. Generally, personal advice may be concentrated on the complicated
and most important themes, while information can mostly be provided via written or electronic channels. Particularly in countries
where private forestry is new, there is a need for personal advice on legislative and economic matters. As a conclusion, it
is suggested that efficient allocation of resources and development of information services require regular analysis of private
forest ownership, and segmenting private forest owners according to their objectives and information needs. 相似文献
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The evaluation of ecosystem health has become one of the main research topics of ecosystem science, thus more and more assessment methods and frameworks have been put forward in recent years. However, the attention people pay to ecosystem health is actually more about what the social functions the ecosystem affords, which depend on the integrity and maintenance of the ecosystem structure and function, and the intensity of disturbance from outside. Accordingly, this research commenced from three main aspects, selected the evaluation indices, and then established the Evaluation Index System of Beijing Forest Ecosystem Health (EIS-BFEH). In the EIS-BFEH, each of the three foundations contained an easily-operated and standard sub-index system, which compounded the specific natural and social conditions of Beijing and was concrete enough to measure and evaluate. Then with the method of the Analytical Hierarchy Process (AHP), the comprehensive index (CI) could be obtained, which represented the health of the forest ecosystem. As a case study, the forest ecosystems in the Badaling area were sampled, evaluated, compared and ranked by use of the EIS-BFEH. The result show that the health of natural forests is much better than that of plantations in the Badaling forest center: the average comprehensive index of the former is 7.9, while the latter is only 6.6. From the results, it could also be found that there are nine units in the healthy state, two units in the subhealthy state, and only one unit of Robinia pseudoacacia in the morbid state. 相似文献