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俄罗斯远东地区是世界上生物多样性最丰富的地区之一。文中在参考相关文献的基础上, 介绍了俄罗斯远东地区生物多样性及其保护状况和研究进展。 相似文献
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LI Jianquan LU Wenming LI Zhiyong .Research Institute of Forestry Policy Information Chinese Academy of Forestry Beijing P. R. China 《中国林业科技(英文版)》2008,(1)
Timber trade cooperation between China and Russia is one of the most important strategic partnerships. From the supply aspect, this paper discussed the natural resource element in bilateral timber trade cooperation between China and Russia with Hecksher-Ohlin model. And from the perspective of the demand, the commercioganic effect of continuous and quick economic development in China on the bilateral trade was analyzed. At the same time, the impacts of the trade policies changes in two states as well as int... 相似文献
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田刚 《绿色中国(A版)》2005,(10):57-59
俄罗斯森林资源十分丰富,并且主要集中在俄罗斯远东西伯利亚地区。中国对森林资源需求旺盛,并已成为重要的木材消费大国和进口大国。在系统研究中俄两国森林资源状况与木材需求现状的基础上指出,随着经济的发展与环保压力的增加,未来中俄两国在森林资源利用和木材贸易方面将呈现旺盛的发展态势,并认为中国和俄罗斯两国政府和企业将在未来林业经贸合作过程中发挥重要作用。 相似文献
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采用灰色关联度分析法筛选对中国进口俄罗斯木材贸易额影响较大的5个因子,运用影响因子及木材贸易进口额构建BP神经网络模型,利用GM(1,1)模型预测影响因子值,将其代入训练好的BP网络模型中对中国进口俄罗斯木材贸易额进行预测。预测结果表明,中俄木材贸易仍具有良好的发展前景。 相似文献
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HU Yanjie LIN Fengming SHI Kunshan Research Institute of Forestry Policy Information Chinese Academy of Forestry Beijing P.R.China 《中国林业科技(英文版)》2007,6(2):62-73
The historical transition of timber distribution pattern in China was presented firstly with main parts of timber flows in China, which included timber markets, timber transport system and regulations of timber transport. Based on the overview on tropical timber flows in China, the trade flows of tropical timber from production and imports of tropical timber to export of tropical timber products were analyzed by vivid illustrations. At the same time, problems in timber trade flows in China were analysed in the end. 相似文献
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从林业地位、森林资源和林产品贸易三个方面介绍了巴西林业的概况,并在分析巴西林产品贸易特点的基础上,总结出对我国林产品贸易的4点启示,即要拓宽国内外市场,保证供需;稳扎稳打步步为营,形成优势出口产品品牌;内外兼顾,完善本国对外贸易法规;防微杜渐,提高管理和科技水平。巴西是世界生物资源和森林资源最为丰富的国家之一,总结和借鉴巴西林产品贸易情况对推动和促进我国林产品贸易及林业产业发展具有重要意义。 相似文献
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WANG Chunfeng* Afforestation Department State Forestry Administration No. He Ping Li Dong Jie Eastern District Beijing P. R.China 《中国林业科技(英文版)》2007,6(1):25-41
This article analyzes the factors shaping commercial timber profit distribution in China's Southern Collective Forest Region (hereinafter SCFR). The article first describes the setting and distribution of a national harvest quota and analyzes its equity impacts on farmer households. Based on access mapping of the commercial timber commodity chain, profit distribution and mechanisms for controlling and maintaining access to profit are analyzed for different actors along the chain. The data show that farmers do not benefit to a great extent from the commerce, even if they are endowed with rights to manage and harvest forests and freely sell commercial timber in the region. There are a number of institutional and non-institutional factors that determine the extent of benefits farmers and other actors along the timber commodity chain can seek. Under current arrangements, the devolution of forest property in the SCFR does not ensure that farmer households benefit from commercial timber marketing. In order to stimulate farmers' enthusiasm for forest rehabilitation and management, beyond the devolution of forest property, it is firstly necessary to take effective measures to improve farmer access to commercial timber profits. 相似文献
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从中俄双边林产品经贸合作的特点出发,分析了中俄林业合作的现状和发展趋势,提出了中俄林业合作的发展方向。 相似文献
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通过对甘肃省天然林区5次森林资源连续清查蓄积量及用材林蓄积量变化的分析,初步得出结论:1979-1988年甘肃省天然林区蓄积量为增长阶段,1988-1996年蓄积量属减少阶段,1996-2001年为增长阶段。通过对3个阶段的分析,说明甘肃省20多年来,天然林区蓄积量呈波浪式的增长、减少、再增长趋势,也充分说明了国家实施天保工程的正确性。 相似文献
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中美林产品贸易特点及发展趋势 总被引:1,自引:0,他引:1
通过对中美两国林产工业的资源、市场、产业特征及大宗林产品的海关统计数据分析,指出中美林产品贸易具有很强的互补性,我国将继续保持中低端最终林产品的价格竞争力,但出口增速将放缓或下降。同时,我国将继续增加美国初加工林产品的进口,中美林产品的贸易顺差将逐步缩小。并对中美林产品贸易的健康发展提出建议。 相似文献
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论我国珍贵用材树种资源的培育 总被引:15,自引:0,他引:15
黎云昆 《绿色中国(A版)》2005,(16):24-28
珍贵用材树种资源是我国重要的战略资源。文章探讨了珍贵用材树种的定义,及开展珍贵用材树种资源培育工作的意义和面临的问题,并提出了相应的政策措施和技术路线。加快珍贵树种的培育除采取集约经营、定向改培、适当加大初植密度、加强抚育管理等技术措施外,要考虑与现有的林业重点工程相结合,与林下种养殖业相结合,城市绿化相结合。 相似文献