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徐曼莎 《绿色中国(综合版)》2011,(20):145-145
林权管理制度改革破解了制约集体林业发展的体制性障碍,林业发展活力明显增强。一是充分激发了农民造林、育林、护林的积极性,推动了生态建设和保护;二是解放和发展了林业生产力,发挥了林地资源的潜力,促进了农民的增收致富; 相似文献
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指出了在很长的一段时间内,我国以破坏生态环境做为代价,虽然促进了我国经济的快速发展。但是导致了我国的环境受到了严重的污染。从大气污染治理形势及问题进行了详细探讨,分析了在治理大气污染时存在的问题,根据原因,提出了科学合理的解决方案。 相似文献
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树活百千年而无语,默默地装点着群山、河流、田野、村庄与城市。树多就成林,林大即为森,巍巍群山有了茂密的树木,才会有长流不息的清清溪水滋润着的田野、村庄与城镇。有了树就有了水,有了水就有了田,有了田就有了粮,有了粮就有了人。可见,树与人类的生存有着密切的关系。森林,对于人类的重要性不言而喻,我们的城市也需要树木来装点。 相似文献
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鄂赣地区竹林土壤与植物营养特性及其信息化管理技术 总被引:1,自引:0,他引:1
文章介绍了作者近年来在鄂赣地区进行的竹林土壤与植物营养特性及其信息化管理技术研究的成果:初步摸清了湖北、江西2省竹类主产区竹林生长和养分管理现状,明确了存在的问题;系统研究了湖北、江西2省竹类主产区土壤营养状况;建立了毛竹林土壤养分丰缺指标和叶片营养诊断指标;摸清了毛竹主产区土壤养分限制因子;提出了较适宜的毛竹叶片营养诊断技术;系统开展了毛竹林土壤养分空间变异特性的研究,提出了湖北、江西2省竹类主产区竹林全营养优化施肥配方和配套施肥技术;建立了毛竹林优化施肥的计算机管理系统。 相似文献
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《Scandinavian Journal of Forest Research》2012,27(5):434-447
Abstract This study used data on project management from 70 recent product development projects in the wood industry. The objective was to test the influence of some project management factors, known from cross-industry research to be keys to product development project success, on product development project success in the context of the wood industry. Through the use of hierarchical multiple regression analysis, it was found that both the sharpness of the product concept definition and the strength of the project leader had significant positive influences on the success of product development projects. Conversely, product advantage, team cross-functionality and customer involvement did not have a significant positive influence on the success of these projects. The latter even indicated a negative influence on product development project success. Project uncertainty, as manifested in the degree of newness of the technology and the marketing strategies of the product to the innovating strategic business unit, did not influence the relationship between project management factors and product development project success. Some of the findings were unexpected and may be explained by the industry's unaccustomedness to customer co-operation and the fact that product development in the wood industry takes place within conventional technology and market bounds. 相似文献
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A forest optimisation model including carbon flows: Application to a forest in Norway 总被引:1,自引:0,他引:1
Ann Kristin Raymer Terje GobakkenBirger Solberg Hans Fredrik HoenEven Bergseng 《Forest Ecology and Management》2009
We analyse which management to choose in order to increase the carbon benefit from the 1.342 million ha forest area in Hedmark County, Norway, and the cost of doing this compared to traditional profit maximising behaviour. The model used in the analysis is a dynamic forest management optimisation model which includes the main carbon flows and benefits from the forest area: tree growth and mortality, litter accumulation, decomposition of dead wood and harvest residues, soil processes, end-use of wood products, and saved greenhouse gas emissions from using wood products instead of more energy intensive materials and fossil fuels. 相似文献
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加入WTO对我国林业发展的影响 总被引:9,自引:0,他引:9
我国林业在国际竞争中既有优势,也有劣势,加入WTO将对我国工业产生重大的影响,森林资源将得到保护和发展,木材市场将更加活跃,林产工业虽将受到冲击,但也存在着发展机遇,可分为直接机遇和间接机遇,就直接机遇来说,加入WTO将会使我国林产工业企业在利用国际资源、国际市场,发展对外贸易方面获得更加有利的条件和优惠待遇,间接或潜在的机遇在于,加入WTO将使我国林产工业企业的技术水平和管理水平得到提高,同时,也将使产业部门的管理体制和企业的经营机制得到进一步改革。 相似文献
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《Journal of Sustainable Forestry》2013,32(1):61-77
A simple stand model is developed to assess the influence of management activities in old growth Douglas-fir forests on atmospheric CO, levels. Two natural disturbance regimes (450- and 240-year stand replacement fire cycles) are compared with four management regimes (45, 6 5 , 90-year plantation rotations, and conversion to non-forest use). Conversion of old growth Douglas-fir stands to plantations may actually decrease atmospheric C 4 for the fist few decades, but then increase it. The short term and long term changes are negligible compared to the atmospheric C02 produced by burning fossil fuels. Using wood as a substitute product for other materials (brick, aluminum, and plastic) dramatically reduces CO, released to the atmosphere; however, where wood is used as a luxury product, large quantities of C02 are released to the atmosphere under harvest regimes. 相似文献
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We review the management of Eucalyptus species under a coppice-with-standards (CWS) silvicultural system. CWS management results in product diversification, permitting production of small and large scale timber from the same stand. Eucalyptus species are suitable candidates for CWS management because: there are large worldwide plantation areas, sprouting capacity is high, and eucalypts are multipur- pose species. We discuss (1) short rotation Eucalyptus coppice manage- ment for energy and pulping and (2) Eucalyptus seedling management for solid wood products. We review the literature and discuss experi- ences with Eucalyptus managed under the CWS system. We also assess projects dealing with Eucalyptus coppice management, stand density regulation, pruning, and stand and wood quality. The growth environ- ment of the standard trees (heavy competition up to the first harvest, free growth afterwards) coupled with long rotations (〉20 years) results in high quality logs for solid wood products. Early pruning should be ap- plied to enhance wood quality. We propose a system for the silvicultural management of Eucalyptus under the CWS system, elaborating on the consequences of initial planting density, site productivity, and standard tree densities as well as timing of basic silvicultural applications. 相似文献
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Chao Li Shongming Huang Hugh Barclay Derek Sidders 《Journal of Sustainable Forestry》2013,32(3):217-233
ABSTRACTAlthough sustainable forest management is accepted worldwide in concept, challenges in the methods of implementation remain. Using local data sets from Alberta, Canada, we show that a simulation approach can assist the implementation of sustainable forest management by improved understanding of product potential and other forest ecosystem goods and services that forests can provide for a given forest inventory. This will assist facilitating trade-offs among them for an optimal wood utilization strategy to achieve sustainable forest management. In this example, effects of wood utilization standard on merchantable volume, lumber volume, and number of trees that can produce at least one piece of lumber are quantified, and a conversion method for wood volumes under different wood utilization standards is presented. Wood utilization standard is the combination of stump height and diameter inside bark at merchantable height, which considerably influences available volume quantity of forest resource. However, such influences have not been quantified for sustainable forest management implementation. Our results not only confirmed that merchantable and lumber volumes increased with decreasing stump height and diameter inside bark at merchantable height, but also revealed that this trend will not hold when diameter inside bark at merchantable height is less than 7 cm. 相似文献
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