格氏栲人工林和杉木人工林碳吸存与碳平衡

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1、第43卷第3期林业科学Vol143,No132007年3月SCIENTIASILVAESINICAEMar.,2007格氏栲人工林和杉木人工林碳吸存与碳平衡112331杨玉盛陈光水王义祥谢锦升杨少红钟羡芳(11福建省亚热带资源与环境重点实验室福建师范大学地理科学学院福州350007;21福建省农业科学研究院福州350002;31福建农林大学林学院福州350003)关键词:格氏栲;杉木;碳吸存;碳平衡+中图分类号:S791127019;S7181554文献标识码:A文章编号:1001-7488(2007)

2、03-0113-05CarbonSequestrationandBalanceinCastanopsiskawakamiiandCunninghamialanceolataPlantationsinSubtropicalChina112331YangYushengChenGuangshuiWangYixiangXieJinshengYangShaohongZhongXianfang(11FujianKeyLaboratoryofSubtropicalResourcesandEnvironmentsSch

3、oolofGeographicalSciences,FujianNormalUniversityFuzhou350007;21FujianAcademeofAgriculturalSciencesFuzhou350002;31SchoolofForestry,FujianAgricutureandForestryUniversityFuzhou350002)Abstract:Toprovidepotentialimplicationsofspeciesselectionforcarbonplantati

4、on,differencesincarbonsequestrationpatternandnetecosystemproduction(NEP)weredeterminedbetweentwo36-year-oldplantationsofbroadleavedspecies,CastanopsiskawakamiiandCunninghamialanceolata,inSanming,Fujian.Annualnetcarbonsequestrationwas131639and-2-161599tC#

5、hma,respectively,intheC.kawakamiiandtheC.lanceolata,amongwhichtheannualbiomassCincrementandthelitterfallproductionwasevenlydistributed.Totheannualnetcarbonsequestration,thecontributionofstem(woodplusbark)incrementwasmuchlower,andthatofbranchincrementwasm

6、uchhigherintheC.kawakamiithanintheC.lanceolata(2616%versus4013%,and1115%versus013%).Inbothplantation,theaboveandbelowgroundlitterfallaccounted60%-2-1and40%respectivelyfortheannuallitterfallproduction,whichwasestimated71183tC#hmaintheC.kawakamiiand-2-1315

7、54tC#hmaintheC.lanceolata.AnnualsoilheterotrophicrespirationwasresponsibleforaClossof51983and21984-2-1t#hmafromsoiltoatmosphereintheC.kawakamiiandtheC.lanceolata,respectively.Carbonbalanceanalysisshowed-2-1therewereapositivenetecosystemproduction(Csink),

8、71656and31615tC#hma,fortheC.kawakamiiandtheC.lanceolata,respectively.Forthepurposeofcarbonmanagement,C.kawakamiimightbeamoresuitablespeciesthanC.lanceolatainlocalregion.Keywords:Castanopsiskawakamii;Cunninghamialanceolata;