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文章对海南省岛东林场前期的森林经营方案编制和实施情况进行了回顾,针对前期经营方案实施中存在的诸多问题,提出新一轮的森林经营方案编制的建议,为行业人士提供了理论参考。 相似文献
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随着当前气候变化问题日渐凸显,森林碳汇功能逐渐被发掘和重视。本文采用蓄积量法和市场价值法对昆嵛山林场的森林碳汇量及其经济价值问题估算。研究结果表明,针阔混交林的单位面积蓄积量最大,约43.62m^3/hm^2;针叶林的碳汇量最多约45.94万t,其次是针阔混交林约11.67万t,阔叶林的碳汇量约为1.26万t。昆嵛山林场目前在全国7个碳交易市场的经济价值由大到小依次是:北京、深圳、上海、湖北、广东、重庆、天津。目前,针叶林对昆嵛山林场碳汇量的贡献最为巨大,北京市场是碳交易的最优选择。 相似文献
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低碳经济背景下森林碳汇领域人才培养战略分析 总被引:2,自引:0,他引:2
在全球气候变暖的背景下,以低碳经济为核心的森林碳汇产业成为中国林业发展新的战略目标之一。从挖掘与提高现有森林资源的碳汇功能、碳汇林营造与可持续经营、碳汇产业的经济管理、森林碳汇的行政管理、气候变化与碳汇林业的发展、从业人员的培训和相关技术的推广等6个方面,系统分析了森林碳汇领域对高等林业教育人才培养的战略需求。由于高等学校的人才培养周期长,相对于社会需求而言,培养的人才“产品”具有明显的滞后性,所以建议高等林业院校及时调整人才培养战略,及早增设森林碳汇本科专业,并在林学一级学科下设置森林碳汇二级学科,以满足碳汇林业发展对高级专业人才的迫切需求。同时,提出森林碳汇二级学科的主要研究方向应包括碳汇林营造与可持续经营技术、森林碳汇生态经济和碳汇项目管理。 相似文献
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蒙光伟 《内蒙古林业调查设计》2012,(4):125-127
森林通过同化作用吸收固定大气中的CO2,抑制其浓度上升的碳汇功能对于应对气候变化问题具有积极的现实意义。文章在研究森林碳汇意义、森林碳汇研究状况的基础上,通过综述国内外相关资料,对森林碳汇的计量进行了初步的分析概述,最后提出了完善碳汇计算方法的发展方向。 相似文献
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在全球气候变化大背景下,森林碳汇能力成为国际社会公认的减缓气候变暖的重要措施之一。文章总结了近年来浙江省林业应对气候变化成效:森林蓄积量从2005年的1.72亿m~3提高到2019年的3.61亿m~3,全省森林植被总碳储量达到2.8亿t;2006-2019年全省共完成造林更新41.2万hm2,共实施中幼林抚育面积约181.47万hm2;建立了中国绿色碳汇基金会浙江碳汇基金,募集社会资金大力实施公益性林业碳汇项目,共营造碳汇林9786.67hm2。同时,分析了当前浙江省林业应对气候变化存在宜造林地严重不足、森林质量总体不高、松材线虫病形势严峻、对林业碳汇认识不足等问题,提出了应切实提高森林增汇能力、努力减少森林碳排放量、加强林业碳汇建设与交易、加大林业科技支撑力度和强化组织领导和科普宣传等发展对策。 相似文献
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Extending rotation age for carbon sequestration: A cross-protocol comparison of North American forest offsets 总被引:1,自引:0,他引:1
Through carbon offset programs, forest owners can be offered financial incentives to enhance the uptake and storage of carbon on their lands. The amount of carbon that can be claimed by an individual landowner will ultimately depend on multiple factors, including the productivity of the forest, the management history of the stand, and the program in which the landowner is participating. This project presents a modeling framework for forest carbon accounting which is driven by forest yield curves and carbon pool partitioning. Within this model the amount of creditable carbon generated from adjusting the rotation age of multiple forest stands can be estimated for 46 distinct North American forest types. The model also provides a comparison of total creditable carbon generated under three carbon accounting methodologies: the Department of Energy 1605b Registry, the Chicago Climate Exchange, and the Voluntary Carbon Standard. In our evaluation of a 5-year rotation extension across 102 unique modeling scenarios, we find large differences among the carbon accounting schemes. This has implications for both forest landowners and policymakers alike. In particular, methodologies to account for such issues as leakage, permanence, additionality, and baseline establishment, while potentially increasing the overall legitimacy of any forest carbon offset program, can reduce creditable carbon to the forest owner (by up to 70%). Regardless of the protocol used, we also note strong regional differences, with Pacific Northwest forests of fir, spruce, hemlock, alder and maple being the most effective at sequestering carbon on a per area basis. 相似文献
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The impact of forest management activities on the ability of forest ecosystems to sequester and store atmospheric carbon is of increasing scientific and social concern. The nature of these impacts varies among forest ecosystems, and spatially and temporally explicit ecosystem models are useful for quantifying the impacts of a number of alternative management regimes for the same forest landscape. The LANDIS-II forest dynamics simulation model is used to quantify changes to the live overstory and coarse woody debris pools under several forest management scenarios in a high-latitude South American forest landscape dominated by two species of southern beech, Nothofagus betuloides and N. pumilio. Both harvest type (clearcutting vs. partial overstory retention) and rotation length (100 years vs. 200 years) were significant predictors of carbon storage in the simulation models. The prompt regeneration of harvest units greatly enhanced carbon storage in clearcutting scenarios. The woody debris pool was particularly sensitive to both harvest type and rotation length, with large decreases noted under short rotation clearcutting. The roles of extended rotations and partial overstory retention are noted for enhancing net carbon storage on the forest landscape. 相似文献
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森林经营是林业可持续发展的保证,基于青海省东峡林场森林资源的现状,提出东峡林场森林可持续经营的措施。 相似文献
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本研究以山东省各森林类型为统计单元,得出山东省现有森林碳储量为105.5Tg,占全国的3%,是全国单位面积碳储量平均水平的1.92倍(按土地面积计),各森林类型碳密度差异较大,介于9.23~46.59Mg.hm-2之间,密度大小与人为干扰程度有直接关系。并根据历年森林碳储量与碳密度变化情况,对未来18年山东省碳储量及碳密度变化情况进行了预测,至2020年,全省森林碳储量可达155.04Tg,比现在增长47%,至2030年达到199.08Tg,比2012年增长89%。 相似文献
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森林生物量与生产力研究综述 总被引:39,自引:2,他引:39
森林生态系统在维护全球碳平衡中有着重要作用,其生物量和生产力是研究生态系统碳平衡的基础数据,进一步推动了森林生物量和生产力的研究。阐述了森林生物量和生产力形成的生理生态学基础,不同森林类型的生物产量、区域分布格局,森林经营对生物产量的影响、研究方法和模型等。在多尺度上,采用先进的研究手段,围绕资源环境等热点问题来研究森林生物量和生产力,实现数据共享和网络化是森林生物量和生产力研究的发展趋势。 相似文献
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湖北省太子山森林植被碳密度及碳储量研究 总被引:1,自引:0,他引:1
以湖北省太子山林场管理局2009年森林二类清查数据资料为基础,运用生物量转换因子连续函数法,从森林类型、林龄和林分起源角度,对该区域森林植被碳储量和碳密度进行估测.研究表明:湖北省太子山林管局森林植被碳储量为233855.66 t,平均植被碳密度为39.31 t·hm^-2.人工林碳储量高于天然林4.02倍,该区域森林植被碳储量主要由人工林提供.按森林类型划分,不同森林类型碳储量和碳密度均表现为针叶林>阔叶林>针阔混交林;按林龄划分森林碳储量,幼龄林>成熟林>中龄林>近熟林>过熟林,各林龄碳密度随林龄的增加表现为先增加后降低的趋势,中幼林森林面积和碳储量所占比例较大,该区域森林植被碳储量潜力巨大. 相似文献
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Forest harvesting in eastern North America has been occurring for centuries but its effect on soil carbon storage and dynamics below 20 cm is not well known. This paper investigates age-related variations in carbon storage and dynamics in the organic layer and 6 depth strata in the top 50 cm of the mineral soil during ecologically important stages of post-harvest succession in a first rotation red spruce forest chronosequence that includes one of the largest old growth reference stands in northeastern North America. Storage of carbon reached a minimum 32 years post-harvest, at which time stores were approximately 50% of the intact forest. However, storage approached the range of the intact forest approximately 100 years post-harvest. Examination of age-related variations with depth revealed that concentrations of carbon below 20 cm may be driving the temporal trends in whole soil storage in these forests. Corresponding carbon isotope data were consistent with increased isotopic fractionation attributable to increased rates of mineralization post-harvest. Based on these results, we suggest that a greater emphasis should be placed upon examining storage of carbon below 20 cm in the mineral soil when evaluating the sequestration potential of intensive forest management, specifically rotation length. 相似文献