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时间:2020-03-27
《不同森林经营模式对丹清河林场天然次生林碳贮量的影响.pdf》由会员上传分享,免费在线阅读,更多相关内容在行业资料-天天文库。
1、第50卷第9期林业科学Vol.50,No.92014年9月SCIENTIASILVAESINICAESep.,2014doi:10.11707/j.1001-7488.20140904不同森林经营模式对丹清河林场天然*次生林碳贮量的影响1,23戎建涛何友均(1.温州科技职业学院温州325006;2.中国林业科学研究院资源信息研究所北京100091;3.中国林业科学研究院林业科技信息研究所北京100091)摘要:基于目标树经营、粗放经营、无干扰3种经营模式,分析黑龙江省丹清河林场针叶混交林、阔叶混交林、针阔混交林3种天然次生林的碳贮量变化。结果表明:1)林分碳贮量排序均为目标树经营(162.74
2、~205.85-2-2-2t·hm)>无干扰(128.88~150.47t·hm)>粗放经营(107.59~130.57t·hm),且目标树经营与无干扰、粗放经营的碳贮量差异显著(P<0.05);2)林分各层次碳贮量大小依次为土壤层(57.33%~70.38%)、乔木层(28.01%~39.83%)、凋落物层(0.50%~2.69%)、灌木层(0.21%~1.00%)、草本层(0.07%~0.56%);3)土壤层碳贮量排序为目标树经营>无干扰>粗放经营,0~20cm土层碳含量和碳贮量比重最大;4)乔木层碳贮量排序均为目标树经营>无干扰>粗放经营,目标树经营与无干扰、粗放经营差异显著(P<0.0
3、5),干材碳贮量最大,占乔木层碳贮量的46.58%~54.72%;5)灌木层、草本层碳贮量排序均为无干扰>粗放经营>目标树经营,无干扰与粗放经营、目标树经营差异均显著(P<0.05);6)凋落物层碳贮量排序为目标树经营大于粗放经营和无干扰。目标树经营能够增加林分、土壤、乔木层碳贮量,是提高东北天然次生林碳汇功能的重要经营模式。关键词:碳贮量;碳含量;森林经营模式;天然次生林+中图分类号:S718.542文献标识码:A文章编号:1001-7488(2014)09-0026-10EffectsofDifferentForestManagementRegimesonCarbonStockinNatu
4、ralSecondaryForestsatDanqingheForestryFarm1,23RongJiantaoHeYoujun(1.WenzhouVocationalCollegeofScienceandTechnologyWenzhou325006;2.InstituteofForestResourcesInformationTechniques,CAFBeijing100091;3.ResearchInstituteofForestryPolicyandInformation,CAFBeijing100091)Abstract:Howtoincreasecarbonstockinfor
5、estecosystemsbyoptimizingforestmanagementstrategyhasincreasinglybecomeaconcernintheworld.Weanalyzedthechangesincarbonstockinthreenaturalsecondaryforests,i.e.,coniferousforest,broadleavedforestandconifer-broadleavedmixedforest,inDanqingheForestFarm,HeilongjiangProvince,basedonthethreemanagementregime
6、sincludingtarget-treesmanagement,extensivemanagementandnon-disturbanceregime.Theresultsshowedthat:1)Thetotalstandcarbonstockwasrankedinorderoftarget-tree-2-2management(162.74-205.85t·hm)>non-disturbancemanagement(128.88-150.47t·hm)>extensive-2management(107.59-130.57t·hm),andtarget-treemanagementdif
7、feredsignificantlyincarbonstockfromnon-disturbanceandextensivemanagement(P<0.05).2)Layersinthesestandshaddifferentamountofcarbonstock,followedinpercentagebysoillayer(57.33%-70.38%),treelayer(28.01%-39
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