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时间:2020-05-22
《黑河绿洲区耕作土壤有机碳及其活性和非活性组分固碳潜力研究-论文.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、中回虐季通报2013,29(36):172—177ChineseAgriculturalScienceBulletin黑河绿洲区耕作土壤有机碳及其活性和非活性组分固碳潜力研究张俊华,周志民,王岩松,张阳,刘志阳(河南大学资源与环境研究所,河南开封475004;河南大学环境与规划学院,河南开封475004;)摘要:土壤有机碳固碳潜力研究是陆地生态系统碳循环中的前沿领域,可为区域农业碳管理和温室气体减排提供依据。以黑河绿洲区水田为研究对象,采用实地土壤样品采集、室内指标分析和模型模拟方法,研究了表层0~20cm土壤不同粒径与土壤TOC、AOC、NOC之间的关系,在此基础上建立了土壤TOc、Ao
2、c和N0C物理化学固碳潜力模型并估算固碳潜力。结果显示绿洲农田土壤存在较大的固碳空间,TOC、A0c、N0C固碳潜力平均值分别为0.75%、0.14%、0.56%。并以中游绿洲水田为例,计算了土壤TOC、AOC、NOC碳密度、碳储量及其潜力,其中水田TOC、AOC、NOC碳密度的潜力分别为0.18、O.O3、0.15g/cm,水田中TOC、AOC、NOc碳储量的潜力分别为7.12Tg、1.13T2、5.79Tg。分析发现水田中NOC的碳密度和碳储量提升的空间明显高于AOC,说明NOC的提高是TOC固碳的关键。关键词:固碳潜力;水田;土壤有机碳;黑河绿洲区中图分类号:K903,X14文献标志
3、码:A论文编号:2013.0294ResearchonCultivatedSoilCarbonSequestrationPotentialintheHeiheOasisZhangJunhua,ZhouZhimin,WangYansong,ZhangYang,LiuZhiyang(,比eofNaturalResourcesandEnvironmentalScienceResearch,HenanUniversity,KaifengHenan475004;CollegeofEnvironmentandPlanningofHenanUniversity,KaifengHenan475004;)A
4、bstract:Researchonsoilorganiccarbonsequestrationpotentialisthefrontiersofcarboncycleinterrestrialecosystem;itcanprovidethebasisforagriculturalcarbonmanagementandgreenhousegasreduction.Therelationshipsbetweendifferentsoilparticlesizesandtotalorganiccarbon(TOC),activeorganiccarbon(AOC),nonactiveorga
5、niccarbon(NOC)wereresearchedintheHeiheoasisusingfieldsamplesgathered,laboratoryanalysisandmodelsimulationmethods,thenphysicalandchemicalcarbonsequestrationpotentialmodelsofTOC,AOCandNOCarebuiltandthecarbonsequestrationareestimated.Resultsshowpaddyfieldsoilhasgreatcarbonsequestrationspace,carboncon
6、tentpotentialofTOC,AOCandNOCis0.75%、0.14%and0.56%,respectively.InthemiddleofHeiheoasis,carbondensity,storageandtheirpotentialofTOC,AOCandNOCinpaddyfieldarecalculated,carbondensitypotentialofTOC,AOCandNOCis0.18g/em。,0.03’g/cmand0.15g/cm,carbonstorageofTOC,AOCandNOCis7.12Tg,1.13Tgand5.79Tg,respectiv
7、ely.TheresultsshowedNOCdensityandstoragepotentialinpaddyfieldswassignificantlyhigherthantheAOC,itindicatedtheimprovementofNOCwasthekeyofcarbonsequestration.Keywords:soilcarbonsequestrationpotential;paddyfield;soi
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