欢迎来到天天文库
浏览记录
ID:55743266
大小:495.59 KB
页数:6页
时间:2020-06-06
《施肥对麻栎人工林碳密度及休眠期土壤呼吸的影响.pdf》由会员上传分享,免费在线阅读,更多相关内容在应用文档-天天文库。
1、生态学杂志ChineseJournalofEcology2012,31(2):248—253施肥对麻栎人工林碳密度及休眠期土壤呼吸的影响葛乐成向荣段溪虞木奎刘志龙(中国林业科学研究院亚热带林业研究所,浙江富阳311400;南京林业大学森林资源与环境学院,南京210037;中国林业科学研究院热带林业实验中心,广西凭祥532600)摘要以安徽省滁州市红琊山林场麻栎人工林为研究对象,测定了4种施肥处理(0、0.15、0.30和0.45kg·株)林分碳密度,并采用开沟隔离法对不同处理林分休眠期土壤呼吸组分进行测定。结果表明:
2、4种施肥处理林分总碳密度分别为73.68、84.49、87.20和91.70t·hm~。与对照相比,各施肥处理麻栎树干碳密度、树枝碳密度和枯落物碳密度均有极显著提高(P3、物因子和非生物因子共同调控,在所选取的4个指标中(土壤含水量、土壤C/N、根生物量和枯落物有机碳含量),土壤含水量和枯落物有机碳含量与土壤总呼吸及土壤异养呼吸速率均有显著相关性(P4、ormantperiod.GELe,CHENGXiang。rong,DUANXi,YUMu—kui一,LIUZhi.1ong(InstituteofSubtropicaZForestry。ChineseAcademyofForestry,Fuyang311400,Zhe.fiang,China;CollegeofForestResourcesandEnvironment,NanjingForestryUniversity,Nan.210037,China;ExperimentCenterofTropicalFores5、try。ChineseAcademyofForestry,Pingxiang532600,Guangxi,China).ChineseJournalofEcology,2012,31(2):248—253.Abstract:Thispapermeasuredthecarbondensityofthesawtoothoak(OuercusacutissimaCarr.)plantationsinHongyashanForestryFarmofChuzhouCity,AnhuiProvinceofEastChinaund6、erdifferentfertilizationtreatments(0,0.15,0.30,and0.45kg·tree),anddeterminedthesoilrespirationcomponentsindormantperiodbythemethodoftrenchingforseparation.Inthetreatments0,0.15.0.30.and0.45kg·tree_。.thetotalcarbondensityofthestandswas73.68,84.49,87.20,and91.70t7、·hm~,respectively.Ascomparedwithtreatment0kg。tree~thecarbondensitiesofthestem,branch,andlitterintheotherthreefertilizationtreatments,increasedsignificantly(P<0.01).Thesoiltotalandheterotrophicrespirationratesincreasedwithincreasingfertilizationrate,being48.9%an8、d38.6%higherintreatment0.45kg·tree一thanintreatment0kg·tree~.respectively.Comparedwithrootrespiration,soilheterotrophicrespirationhadafargreatercontributiontothesoiltotalresp
3、物因子和非生物因子共同调控,在所选取的4个指标中(土壤含水量、土壤C/N、根生物量和枯落物有机碳含量),土壤含水量和枯落物有机碳含量与土壤总呼吸及土壤异养呼吸速率均有显著相关性(P4、ormantperiod.GELe,CHENGXiang。rong,DUANXi,YUMu—kui一,LIUZhi.1ong(InstituteofSubtropicaZForestry。ChineseAcademyofForestry,Fuyang311400,Zhe.fiang,China;CollegeofForestResourcesandEnvironment,NanjingForestryUniversity,Nan.210037,China;ExperimentCenterofTropicalFores5、try。ChineseAcademyofForestry,Pingxiang532600,Guangxi,China).ChineseJournalofEcology,2012,31(2):248—253.Abstract:Thispapermeasuredthecarbondensityofthesawtoothoak(OuercusacutissimaCarr.)plantationsinHongyashanForestryFarmofChuzhouCity,AnhuiProvinceofEastChinaund6、erdifferentfertilizationtreatments(0,0.15,0.30,and0.45kg·tree),anddeterminedthesoilrespirationcomponentsindormantperiodbythemethodoftrenchingforseparation.Inthetreatments0,0.15.0.30.and0.45kg·tree_。.thetotalcarbondensityofthestandswas73.68,84.49,87.20,and91.70t7、·hm~,respectively.Ascomparedwithtreatment0kg。tree~thecarbondensitiesofthestem,branch,andlitterintheotherthreefertilizationtreatments,increasedsignificantly(P<0.01).Thesoiltotalandheterotrophicrespirationratesincreasedwithincreasingfertilizationrate,being48.9%an8、d38.6%higherintreatment0.45kg·tree一thanintreatment0kg·tree~.respectively.Comparedwithrootrespiration,soilheterotrophicrespirationhadafargreatercontributiontothesoiltotalresp
4、ormantperiod.GELe,CHENGXiang。rong,DUANXi,YUMu—kui一,LIUZhi.1ong(InstituteofSubtropicaZForestry。ChineseAcademyofForestry,Fuyang311400,Zhe.fiang,China;CollegeofForestResourcesandEnvironment,NanjingForestryUniversity,Nan.210037,China;ExperimentCenterofTropicalFores
5、try。ChineseAcademyofForestry,Pingxiang532600,Guangxi,China).ChineseJournalofEcology,2012,31(2):248—253.Abstract:Thispapermeasuredthecarbondensityofthesawtoothoak(OuercusacutissimaCarr.)plantationsinHongyashanForestryFarmofChuzhouCity,AnhuiProvinceofEastChinaund
6、erdifferentfertilizationtreatments(0,0.15,0.30,and0.45kg·tree),anddeterminedthesoilrespirationcomponentsindormantperiodbythemethodoftrenchingforseparation.Inthetreatments0,0.15.0.30.and0.45kg·tree_。.thetotalcarbondensityofthestandswas73.68,84.49,87.20,and91.70t
7、·hm~,respectively.Ascomparedwithtreatment0kg。tree~thecarbondensitiesofthestem,branch,andlitterintheotherthreefertilizationtreatments,increasedsignificantly(P<0.01).Thesoiltotalandheterotrophicrespirationratesincreasedwithincreasingfertilizationrate,being48.9%an
8、d38.6%higherintreatment0.45kg·tree一thanintreatment0kg·tree~.respectively.Comparedwithrootrespiration,soilheterotrophicrespirationhadafargreatercontributiontothesoiltotalresp
此文档下载收益归作者所有