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周学武贺东北柯善新陈振雄 《中南林业调查规划》2016,(4):5-8
在森林资源二类调查中,如何衔接林地"一张图"、公益林区划界定、集体林权制度改革等调查、区划和界定成果,是近年来森林资源监测中难于把握和处理的问题。从森林资源二类调查特点入手,在确保森林资源二类调查特色不被扭曲的前提下,就如何充分利用林地"一张图"、公益林区划界定、集体林权制度改革等调查、区划、界定成果进行了研究,并就衔接中的关键点进行了剖析,以期为我国森林资源监测提供一些新思路,服务国家林业大局。 相似文献
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为实现二类调查与林地落界有效衔接,保证二类调查成果与林地保护利用规划的定位标准一致,增强二类调查成果在森林资源管理中的实用性,针对新一轮二类调查,提出以林地落界矢量为参照区划固定小班的方法。同时,针对区划固定小班可能出现的"闭门造车"现象,提出加强职业道德培训,建立奖罚并举的质量管理制度等建议。 相似文献
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对《吉林省森林资源二类调查细则》的几点改进建议姜福全(吉林省林业规划院)《吉林省森林资源二类调查细则》(以下简称细则)是森林资源调查工作必须遵循的依据和准则。目前,我省执行的这个《细则》是一个比较全面的技术性规定。但是,随着我省林业生产及经营水平的不... 相似文献
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广东省林地变更调查工作存在的问题与对策研究 总被引:1,自引:0,他引:1
《林业调查规划》2016,(1)
林地变更调查,是在林地"一张图"基础上开展林地范围、地类变化以及林地管理属性变化等情况的调查分析。分析广东省林地变更调查工作中存在的软件不完善,遥感影像时效性不强、与森林资源二类调查数据未能有效衔接等问题,藉此提出相应对策及建议。 相似文献
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针对当前一类调查与二类调查监测成果不一致的问题,提出了利用大样地区划调查方案,开展一类调查和二类调查两个不同监测体系数据协同性分析,为衔接两类调查体系、产出森林资源“一套数”及实行“双增”目标责任制考核提供科学依据. 相似文献
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一种衔接森林资源一类清查和二类调查的新方案 总被引:7,自引:0,他引:7
针对我国现行森林资源一类清查和二类调查数据不协调的问题,借鉴国外森林资源清查中的相片样地或景观样地设计,提出了衔接一类清查和二类调查的大样地设计新方案,分析了新方案的主要特点,并对一类清查和二类调查数据的协调性问题进行了讨论。 相似文献
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<正>2019年8月29日,海南省林业科学研究所举办"海南省森林资源规划设计调查"(简称:二类调查)操作细则培训班。副所长梁居智任主讲老师,30余人参加培训。梁居智详细介绍了技术标准、准备工作、森林经营区划、调查方法、调查产出结果等八个方面,并指导了二类调查工作开展中的内业判图、外业调查、仪器的使用、报告的编制等。 相似文献
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介绍了云南省新一轮森林资源二类调查启动的背景和存在的问题,并就《云南省森林资源规划设计调查操作细则》(2013年修订)的相关技术问题进行了详细探讨,指出了今后需要加强的方向。 相似文献
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<正> 广西1990年开展了54个县、市的森林资源二类调查,在今年的二类资源调查中,广西林勘设计院重视立地类型调查。在他们制定的技术细则中规定。(一) 以抚育、改造为主的森林,应着重对幼龄林、中龄林、低产林的立地条件和生长特点等进 相似文献
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E. T. Craswell A. Sajjapongse D. J. B. Howlett A. J. Dowling 《Agroforestry Systems》1997,38(1-3):121-137
Steeply sloping lands are widespread in the tropics. An estimated 500 million people practice subsistence agriculture in these
marginal areas. Continued population growth has led to the intensified cultivation of large areas of the sloping lands, exacerbating
the problem of soil erosion. Although research shows that alley cropping and other contour agroforestry systems can stabilize
the sloping lands, these systems have not been widely adopted by farmers.
The Framework for Evaluating Sustainable Land Management (FESLM) has been tested in sloping land areas in the Philippines.
Sustainable land management must be productive, stable, viable, and acceptable to farmers, while protecting soil and water
resources. Farms on which contour hedgerow intercropping has been adopted meet the multifaceted requirements of FESLM, whereas
the farmers' current practice does not. Appropriate land management measures for particular locations depend on a complex
suite of social, economic, and biophysical factors, and need to be developed in participation with farmers.
The role of agroforestry in sustainable management of sloping lands is the subject of networks coordinated by the International
Board for Soil Research and Management (IBSRAM) in seven countries in Asia (ASIALAND) and four countries in the Pacific (PACIFICLAND).
We review selected outcomes from a wealth of network data. From these results the following conclusions about the sustainability
of various agroforestry systems for sloping lands can be drawn:
• In the Pacific, soil loss from sloping lands due to water erosion under farmers' current practices is episodic, unpredictable,
and possibly not severe;
• Agroforestry systems that utilize legume shrubs, fruit trees, coffee (Coffea spp.) or rubber (Hevea brasiliensis) provide
useful economic returns, but are not an essential component in terms of soil protection because grass or pineapple (Ananas
comosus) planted on the contour are equally effective in reducing erosion;
• Agricultural intensification will lead to nutrient mining, reduction of aboveground biomass, declining yields, and less
soil protection unless external sources of nutrients are used;
• nitrogen can be effectively supplied using legumes;
• Cash derived from hedgerow trees and/or shrubs may providean incentive for their adoption by farmers, as well as funds to
purchase external inputs such as fertilizers;
• Labor may be a major constraint to the adoption of complex agroforestry systems.
We also discuss the information management systems required to effectively manage and utilize the extensive sets of experimental
and indigenous data being accumulated. We believe such information systems can facilitate technology transfer across and between
regions, and improve the efficiency of research into agroforestry and other land-management approaches.
This revised version was published online in June 2006 with corrections to the Cover Date. 相似文献
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Formal and informal institutions and their hierarchy in the regulation of the forest lease in Russia 总被引:1,自引:0,他引:1
The aim of this study is to identify and analyse the institutionalarrangements that regulate the forest lease and related marketsof industrial timber in Russia. A theoretical framework is derivedfrom institutional economics. Institutions, their hierarchyand cohesion are surveyed at constitutional, collective-choiceand operational levels. The organization of the long-term forestlease and its contribution to the sustainable forest managementand development of forest industries are described and regionaldifferences in the organization of forestry are tested. In addition,the expected impacts of the new federal Forest Code are analysed. 相似文献
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本文介绍了世界薪材消耗的现状,概述了因薪材紧缺而滥伐森林带来的几个方面的严峻问题,最后提出了符合我国国情的对策。 相似文献
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随着适宜于制造胶合板的木材供应减少和价格上升,胶合板生产的优势地位已受到相当大的影响。小径材或速生材的利用及胶合板用材树种的扩大是发展胶合板生产最重要的措施。变革胶合板生产工艺可以开发利用新的原料来源、提高劳动生产率、降低生产成本、并使产品多样化。计算机控制和先进的电子技术大大地提高了胶合板生产线的效率和功能,并保证了产品的质量。 相似文献
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近年来,无线寻呼台对森林防火通信的干扰日趋严重,特别是在城乡结合部形成了强大的同频干扰,致使150MHz段通信设备在城乡结合部和城镇内处于瘫痪状态,无法发挥其正常的作用,严重影响了森林防火的预防和扑救工作。因通信不畅造成的损失虽然不是直接的,但由此产生的后果是明显存在的。政府有关部门虽然十分重视这个问题,但受政策和技术条件的制约,一直没有很好的办法排除干扰源,只能建议森林防火部门改用400兆设备避开寻呼台干扰。 森林防火部门几十年来一直使用 150兆设备,已经形成较为完善的通信网,各级防火部门投入… 相似文献
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据河北省各市(省直属单位)“2005年林业有害生物防治统计报表”统计,全省主要林业有害生物发生面积341532.67hm2,同比上升10.42%。其中森林虫害318760hm2,同比上升10.7%,病害16446.67hm2,同比持平,鼠(兔)害6.320hm2,同比上升17%。此外,荒漠林、灌木林、天然次生林有害生物发生4 相似文献