摘要
Phyllostachys edulis plays an important role in maintaining carbon cycling.We examined the effects of soil properties on organic carbon content in a P.edulis forest on Dagang Mountain,Jiangxi Province,China.Based on correlation and stepwise multiple regression analyses,the effects of seven soil factors on organic carbon and their sensitivities to change were studied using path and sensitivity analyses.The results revealed differences in the interconnections and intensities of soil factors on organic carbon.Soil porosity,field capacity,and ammonium nitrogen levels were the main factors affecting organic carbon in the ecosystem.Soil porosity had a strong direct effect on organic carbon content and a strong indirect effect through field capacity.Field capacity and ammonium nitrogen levels mainly affected organic carbon directly.Field capacity,soil porosity,and ammonium nitrogen content,as well as bulk density,b-glucosidase activity,and invertase activity,were sensitive factors.Polyphenol oxidase activity was insensitive.Our study provides a theoretical basis for understanding the effects of soil factors on organic carbon,which can be utilised to improve P.edulis forest management strategies and promote carbon sequestration capacities.
Phyllostachys edulis plays an important role in maintaining carbon cycling.We examined the effects of soil properties on organic carbon content in a P.edulis forest on Dagang Mountain,Jiangxi Province,China.Based on correlation and stepwise multiple regression analyses,the effects of seven soil factors on organic carbon and their sensitivities to change were studied using path and sensitivity analyses.The results revealed differences in the interconnections and intensities of soil factors on organic carbon.Soil porosity,field capacity,and ammonium nitrogen levels were the main factors affecting organic carbon in the ecosystem.Soil porosity had a strong direct effect on organic carbon content and a strong indirect effect through field capacity.Field capacity and ammonium nitrogen levels mainly affected organic carbon directly.Field capacity,soil porosity,and ammonium nitrogen content,as well as bulk density,b-glucosidase activity,and invertase activity,were sensitive factors.Polyphenol oxidase activity was insensitive.Our study provides a theoretical basis for understanding the effects of soil factors on organic carbon,which can be utilised to improve P.edulis forest management strategies and promote carbon sequestration capacities.
引文
Avnimelech Y,Ritvo G,Meijer LE,Kochba M(2001)Water content,organic carbon and dry bulk density in flooded sediments.Aquac Eng 25(1):25-33
Beijing Forestry University(1982)Soil science.China Forestry Press,Beijing
Cheng JM,Wan HE,Hu XM,Zhao YY(2006)Accumulation and decomposition of litter in the semiarid enclosed grassland.Acta Ecol Sin 26(4):1207-1212
Dancer WS,Peteson LA,Chesters G(1973)Ammonification and nitrification of N as influenced by soil pH and previous n treatments.Soil Sci Soc Am Proc 37:67-69
De Boer W,Kowalchuk GA(2001)Nitrification in acid soils:microorganisms and mechanisms.Soil Biol Biochem33:853-866
Du HQ,Zhou GM,Ge HL,Fan WY,Xu XJ,Fan WL,Shi YJ(2012)Satellite-based carbon stock estimation for bamboo forest with a non-linear partial least square regression technique.Int J Remote Sens 33(6):1917-1933
Fang C,Moncrieff JB(2001)The dependence of soil CO2efflux on temperature.Soil Biol Biochem 33:155-165
Feng J,Cui D,Sun GJ,Liu HJ(2017)Soil organic carbon in relation to soil physicochemical properties in Xinjiang.Peatacult Sci34(4):692-697
Guan SY(1986)Soil enzyme and its research method.Agricultural Press,Beijing
Guo H,Chen JR,Zhong B,Liu J,Wu J,He LZ,Ye ZQ,Liu D(2017a)Heavy metal concentration,enzyme activity,and physical and chemical properties of rhizosphere and ono-rhizosphere soils containing Moso bamboo.Acta Ecol Sin 37(18):1-8
Guo YF,Qi W,Yao YF,Qin FC,Gao YH,Zhao WH(2017b)Relations between soil organic carbon and other soil physicochemical indices under different land use patterns.Surf Rev Lett3(24):1-8
Hu YL,Wang SL,Zeng DH(2006)Effects of single Chinese fir and mixed leaf litters on soil chemical,microbial properties and soil enzyme activities.Plant Soil 282:379-386
Huang CY,Jien SH,Chen TH,Tian GL,Chiu CY(2014)Soluble organic C and N and their relationships with soil organic C and N and microbial characteristics in moso bamboo(Phyllostachys edulis)plantations along an elevation gradient in Central Taiwan.J Soils Sedim 14:1061-1070
Hungate BA,Dukes JS,Shaw MR,LuoY Field CB(2003)Nitrogen and climate change.Science 302:1512-1523
Ingrid KT,Bjorn MP,Sander B,Lars SJ,Bent TC(2008)Estimating soil C loss potentials from the C to N ratio.Soil Biol Biochem40:849-852
Lal R(2004)Soil carbon sequestration impacts on global climate change and food security.Science 304:1623-1627
Li S,Qiu L,Zhang X(2010)Mineralization of soil organic carbon and its relations with soil physical and chemical properties on the Loess Plateau.Acta Ecol Sin 30(5):1217-1226
Li YF,Zhang JJ,Chang SX,Jiang P,Zhou GM,Fu SL,Yan ER,Wu JS,Lin L(2013)Long-term intensive management effects on soil organic carbon pools and chemical composition in Moso bamboo(Phyllostachys pubescens)forests in subtropical China.For Ecol Manag 303:121-130
Li P,Zhou G,Du H,Lu D,Mo L,Xu X,Shi Y,Zhou Y(2015)Current and potential carbon stocks in Moso bamboo forests in China.J Environ Manag 156:89-96
Liu J,Jiang PK,Wang HL,Zhou GM,Wu JS,Yang F,Qian SB(2011)Seasonal soil CO2efflux dynamics after land use change from a natural forest to Moso bamboo plantations in subtropical China.For Ecol Manag 262:1131-1137
Liu W,Cheng J,Gao Y,Cheng J,Liang WP(2012)Distribution of soil organic carbon in grassland on loess plateau and its influencing factors.Acta Pedol Sin 49(1):68-76
Martikainen PJ(1984)Nitrification in two coniferous forest soil after different fertilization treatment.Soil Biol Biochem 16:577-582
Neff JC,Townsend AR,Gleixner G,Lehman SJ,Turnbull J,Bowman WD(2002)Variable effects of nitrogen additions on the stability and turnover of soil carbon.Nature 419:915-917
Post WM,Peng TH,Emannuel WR(1990)The global carbon cycle.Am Sci 78:310-326
Prentice IC,Farquhar GD,Fasham MJR,Goulden ML,Heimann M,Jaramillo VJ,Kheshgi HS,QuereCL,Scholes RJ,Wallace DWR(2011)The carbon cycle and atmospheric CO2.In:The third assessment report of intergovernmental panel on climate change.Cambridge University Press
Raven JA,Handley LL,Andrews M(2004)Global aspects of C/Ninteractions determining plant-environment interactions.J Exp Bot 55(394):11-25
State Forestry Administration(1999)Forest soil analysis method.China Standard Press,Beijing
Wang ZM,Zhang B,Song KS,Liu DW,Ren CY(2010)Spatial variability of soil organic carbon under maize monoculture in the Song-Nen Plain,Northeast China.Pedosphere 20:80-89
Wang WJ,Qiu L,Zu YG,Su DX,An J,Wang HY,Zheng GY,Sun W,Chen XQ(2011)Changes in soil organic carbon,nitrogen,pH and bulk density with with the development of larch(Larix gmelinii)plantations in China.Global Change Biol17(8):2657-2676
Weintraub MN,Schimel JP(2003)Interactions between carbon and nitrogen mineralization and soil organic matter chemistry in Arctic Tundra soils.Ecosystems 6(2):129-143
Xiao FM,Fan SH,Wang SL,Xiong CY,Shen ZQ(2009)Soil carbon cycle of Phyllostachy edulis plantation in Huitong Region,Hunan Province.Sci Silvae Sin 45(6):11-15
Zhang R,Shen GC,Zhang XD,Zhang L,Gao SH(2014)Carbon stock and sequestration of a Phyllostachys edulis forest in Changning,Sichuan Province.Acta Ecol Sin 34(13):3592-3601
Zhang H,Zhuang S,Qian H,Wang F,Ji H(2015)Spatial variability of the topsoil organic carbon in the Moso Bamboo forests of southern China in association with soil properties.PLoS ONE10(3):1-17
Zhou GM,Jiang PK,Mo LM(2009)Bamboo:a possible approach to the control of global warming.Int J Nonlinear Sci Numer Simul10(5):547-550
Zhou G,Xu X,Du H,Ge H,Shi Y,Zhou Y(2011a)Estimating aboveground carbon of Moso bamboo forests using the k nearest neighbors technique and satellite imagery.Photogram Eng Remote Sens 77:1123-1131
Zhou GM,Meng CF,Jiang PK,Xu QF(2011b)Review of carbon fixation in bamboo forests in China.Bot Rev 77(3):262-270
Zhou S,Liang Y,Zhang H,Zhuang S,Sun B(2015)Characteristics of spatial pattern and influence factors for soil microbial community structure in Moso Bamboo forests in middle subtropical China.Soils 47(2):369-377