增温和CO_2浓度加倍对川西亚高山针叶林土壤可溶性有机碳、氮的影响
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摘要
采用全自动微气候控制的"人工模拟气候实验系统",研究了增温和CO2浓度加倍对川西亚高山针叶林土壤可溶性有机碳(DOC)和氮(DON)的影响。结果表明:(1)增温(ET)、增CO2(EC)及两者的交互作用(ETC)均增加了DOC含量,增加强度为EC>ET>ETC>CK,各处理对土壤0~15 cm层DOC的作用大于15~30 cm层。(2)ET、EC和ETC对DON的影响与DOC相似。(3)不同土层DOC/DON差异不显著;EC处理显著降低了DOC/DON。(4)DOC、DON的浓度与土壤溶液在254 nm处紫外吸光度值(UVA254 nm)之间呈显著正相关,表明可用UVA254 nm值推测川西亚高山针叶林土壤溶液DOC和DON浓度。
By using a fully automated microclimate-controlled artificial climate simulation system,this paper studied the effects of elevated temperate( ET) and doubled CO2concentration( EC) on the soil dissolved organic matter in a subalpine coniferous forest of western Sichuan.ET,EC,and their interaction( ETC) increased the soil dissolved organic carbon( DOC) content,with the increment being in the order of EC > ET > ETC > CK. The effects of ET,EC,and ETC on the soil DOC was greater in 0- 15 cm than in 15- 30 cm layer. The soil dissolved organic nitrogen( DON) content had the similar variation pattern to the soil DOC. There was no significant difference in the soil DOC / DON between different layers. ET decreased the soil DOC /DON significantly. The soil DOC and DON contents had significant positive correlations with the ultraviolet absorbency value at 254 nm( UVA254 nm),indicating that UVA254 nm could be used to speculate the soil DOC and DON contents in subalpine coniferous forest of western Sichuan.
By using a fully automated microclimate-controlled artificial climate simulation system,this paper studied the effects of elevated temperate( ET) and doubled CO2concentration( EC) on the soil dissolved organic matter in a subalpine coniferous forest of western Sichuan.ET,EC,and their interaction( ETC) increased the soil dissolved organic carbon( DOC) content,with the increment being in the order of EC > ET > ETC > CK. The effects of ET,EC,and ETC on the soil DOC was greater in 0- 15 cm than in 15- 30 cm layer. The soil dissolved organic nitrogen( DON) content had the similar variation pattern to the soil DOC. There was no significant difference in the soil DOC / DON between different layers. ET decreased the soil DOC /DON significantly. The soil DOC and DON contents had significant positive correlations with the ultraviolet absorbency value at 254 nm( UVA254 nm),indicating that UVA254 nm could be used to speculate the soil DOC and DON contents in subalpine coniferous forest of western Sichuan.
引文
代静玉,秦淑平,周江敏.2004.土壤中溶解性有机质分组组分的结构特征研究.土壤学报,22(5):721-727.
黄靖宇,宋长春,宋艳宇,等.2008.湿地垦殖对土壤微生物量及土壤溶解有机碳、氮的影响.环境科学,29(5):1380-1387.
江元明,庞学勇,包维楷.2011.岷江上游油松与云杉人工林土壤微生物生物量及其影响因素.生态学报,31(3):801-811.
罗小三,仓龙,郝秀珍,等.2007.原位土壤溶液采样及可溶性有机碳(DOC)的紫外吸收光谱直接测定探讨.土壤,39(6):943-947.
苏冬雪,王文杰,邱岭,等.2012a.落叶松林土壤溶液吸光度与土壤碳、氮含量的相关性.植物研究,32(3):348-353.
苏冬雪,王文杰,邱岭,等.2012b.落叶松林土壤可溶性碳、氮和官能团特征的时空变化及与土壤理化性质的关系.生态学报,32(21):6705-6714.
徐振锋,唐正,万川,等.2010.模拟增温对川西亚高山两类针叶林土壤酶活性的影响.应用生态学报,21(11):2727-2733.
尹华军,赖挺,程新颖,等.2008.增温对川西亚高山针叶林内不同光环境下红桦和岷江冷杉幼苗生长和生理的影响.植物生态学报,32(5):1072-1083.
张甲,曹军,陶澍.2003.土壤水溶性有机物的紫外光谱特征及地域分异.土壤学报,40(1):118-122.
张金波,宋长春,杨文燕.2005.土地利用方式对土壤水溶性有机碳的影响.中国环境科学,25(3):343-347.
Bengtson P,Bengtsson G.2007.Rapid turnover of DOC in temperate forests accounts for increased CO2 production at elevated temperatures.Ecology Letters,10:783-790.
Blagodatskaya E,Blagodatsky S,Dorodnikov M,et al.2010.Elevated atmospheric CO2 increases microbial growth rates in soil:Results of three CO2 enrichment experiments.Global Change Biology,16:836-848.
Cleveland CC,Neff JC,Townsend AR,et al.2004.Composition,dynamics,and fate of leached dissolved organic matter in terrestrial ecosystems:Results from a decomposition experiment.Ecosystems,7:175-285.
Deflandre B,Gagne JP.2001.Estimation of dissolved organic carbon(DOC)concentrations in nanoliter samples using UV spectroscopy.Water Research,35:3057-3062.
Dilling J,Kaiser K.2002.Estimation of the hydrophobic fraction of dissolved organic matter in water samples using UV photometry.Water Research,36:5037-5044.
Duarte RM,Santos EB,Duarte AC.2003.Spectroscopic characteristics of ultrafiltration fractions of fulvic and humic acids isolated from an eucalyptus bleached Kraft pulp mill effluent.Water Research,37:4073-4080.
Fellman JB,Hood E,D’Amore DV,et al.2009.Seasonal changes in the chemical quality and biodegradability of dissolved organic matter exported from soils to streams in coastal temperate rainforest watersheds.Biogeochemistry,95:277-293.
Fenner N,Ostle NJ,McNamara N,et al.2007.Elevated CO2 effects on peatland plant community carbon dynamics and DOC production.Ecosystems,10:635-647.
IPCC.2007.Contribution of working groupⅢto the fourth assessment report of the intergovernmental panel on climate change//Metz B,Davidson OR,Bosch PR,eds.Climate Change in 2007:Mitigation.Cambridge UK:Cambridge University Press.
Kalbitz K,Schwesig D,Schmerwitz J,et al.2003.Changes in properties of soil-derived dissolved organic matter induced by biodegradation.Soil Biology&Biochemistry,35:1129-1142.
Petrone KC,Richards JS,Grierson PF.2009.Bioavailability and composition of dissolved organic carbon and nitrogen in a near coastal catchment of south-western Australia.Biogeochemistry,92:27-40.
Phillips RP,Meier IC,Bernhardt ES,et al.2012.Roots and fungi accelerate carbon and nitrogen cycling in forests exposed to elevated CO2 .Ecology Letters,15:1042-1049.
Sallas L,Luomala EM,Ultriainen J,et al.2003.Contrasting effects of elevated carbon dioxide concentration and temperature on Rubisco activity,chlorophyll fluorescence,needle ultrastructure and secondary metabolites in conifer seedlings.Tree Physiology,23:97-108.
Schmidt BH,Kalbitz K,Braun S,et al.2011.Microbial immobilization and mineralization of dissolved organic nitrogen from forest floors.Soil Biology&Biochemistry,43:1742-1745.
Schmidt IK,Jonasson S,Shaver GR,et al.2002.Mineralization and distribution of nutrients in plants and microbes in four arctic ecosystems:Responses to warming.Plant and Soil,242:93-106.
Smolander A,Kitunen V.2002.Soil microbial activities and characteristics of dissolved organic C and N in relation to tree species.Soil Biology&Biochemistry,34:651-660.
Wang KY,Kellomaki S,Li CY,et al.2003.Light and wateruse efficiencies of pine shoots exposed to elevated carbon dioxide and temperature.Annals of Botany,92:53-64.
Weishaar JL,Aiken GR,Bergamaschi BA,et al.2003.Evaluation of specific ultraviolet absorbance as an indicator of the chemical composition and reactivity of dissolved organic carbon.Environmental Science&Technology,37:4702-4708.
Xu XK,Luo XB,Jiang SH,et al.2012.Biodegradation of dissolved organic carbon in soil extracts and leachates from a temperate forest stand and its relationship to ultraviolet absorbance.Chinese Science Bulletin,57:912-920.
Zhang YB,Duan BL,Qiao YZ,et al.2008.Leaf photosynthesis of Betula albosinensis seedlings as affected by elevated CO2 and planting density.Forest Ecology and Management,255:1937-1944.
黄靖宇,宋长春,宋艳宇,等.2008.湿地垦殖对土壤微生物量及土壤溶解有机碳、氮的影响.环境科学,29(5):1380-1387.
江元明,庞学勇,包维楷.2011.岷江上游油松与云杉人工林土壤微生物生物量及其影响因素.生态学报,31(3):801-811.
罗小三,仓龙,郝秀珍,等.2007.原位土壤溶液采样及可溶性有机碳(DOC)的紫外吸收光谱直接测定探讨.土壤,39(6):943-947.
苏冬雪,王文杰,邱岭,等.2012a.落叶松林土壤溶液吸光度与土壤碳、氮含量的相关性.植物研究,32(3):348-353.
苏冬雪,王文杰,邱岭,等.2012b.落叶松林土壤可溶性碳、氮和官能团特征的时空变化及与土壤理化性质的关系.生态学报,32(21):6705-6714.
徐振锋,唐正,万川,等.2010.模拟增温对川西亚高山两类针叶林土壤酶活性的影响.应用生态学报,21(11):2727-2733.
尹华军,赖挺,程新颖,等.2008.增温对川西亚高山针叶林内不同光环境下红桦和岷江冷杉幼苗生长和生理的影响.植物生态学报,32(5):1072-1083.
张甲,曹军,陶澍.2003.土壤水溶性有机物的紫外光谱特征及地域分异.土壤学报,40(1):118-122.
张金波,宋长春,杨文燕.2005.土地利用方式对土壤水溶性有机碳的影响.中国环境科学,25(3):343-347.
Bengtson P,Bengtsson G.2007.Rapid turnover of DOC in temperate forests accounts for increased CO2 production at elevated temperatures.Ecology Letters,10:783-790.
Blagodatskaya E,Blagodatsky S,Dorodnikov M,et al.2010.Elevated atmospheric CO2 increases microbial growth rates in soil:Results of three CO2 enrichment experiments.Global Change Biology,16:836-848.
Cleveland CC,Neff JC,Townsend AR,et al.2004.Composition,dynamics,and fate of leached dissolved organic matter in terrestrial ecosystems:Results from a decomposition experiment.Ecosystems,7:175-285.
Deflandre B,Gagne JP.2001.Estimation of dissolved organic carbon(DOC)concentrations in nanoliter samples using UV spectroscopy.Water Research,35:3057-3062.
Dilling J,Kaiser K.2002.Estimation of the hydrophobic fraction of dissolved organic matter in water samples using UV photometry.Water Research,36:5037-5044.
Duarte RM,Santos EB,Duarte AC.2003.Spectroscopic characteristics of ultrafiltration fractions of fulvic and humic acids isolated from an eucalyptus bleached Kraft pulp mill effluent.Water Research,37:4073-4080.
Fellman JB,Hood E,D’Amore DV,et al.2009.Seasonal changes in the chemical quality and biodegradability of dissolved organic matter exported from soils to streams in coastal temperate rainforest watersheds.Biogeochemistry,95:277-293.
Fenner N,Ostle NJ,McNamara N,et al.2007.Elevated CO2 effects on peatland plant community carbon dynamics and DOC production.Ecosystems,10:635-647.
IPCC.2007.Contribution of working groupⅢto the fourth assessment report of the intergovernmental panel on climate change//Metz B,Davidson OR,Bosch PR,eds.Climate Change in 2007:Mitigation.Cambridge UK:Cambridge University Press.
Kalbitz K,Schwesig D,Schmerwitz J,et al.2003.Changes in properties of soil-derived dissolved organic matter induced by biodegradation.Soil Biology&Biochemistry,35:1129-1142.
Petrone KC,Richards JS,Grierson PF.2009.Bioavailability and composition of dissolved organic carbon and nitrogen in a near coastal catchment of south-western Australia.Biogeochemistry,92:27-40.
Phillips RP,Meier IC,Bernhardt ES,et al.2012.Roots and fungi accelerate carbon and nitrogen cycling in forests exposed to elevated CO2 .Ecology Letters,15:1042-1049.
Sallas L,Luomala EM,Ultriainen J,et al.2003.Contrasting effects of elevated carbon dioxide concentration and temperature on Rubisco activity,chlorophyll fluorescence,needle ultrastructure and secondary metabolites in conifer seedlings.Tree Physiology,23:97-108.
Schmidt BH,Kalbitz K,Braun S,et al.2011.Microbial immobilization and mineralization of dissolved organic nitrogen from forest floors.Soil Biology&Biochemistry,43:1742-1745.
Schmidt IK,Jonasson S,Shaver GR,et al.2002.Mineralization and distribution of nutrients in plants and microbes in four arctic ecosystems:Responses to warming.Plant and Soil,242:93-106.
Smolander A,Kitunen V.2002.Soil microbial activities and characteristics of dissolved organic C and N in relation to tree species.Soil Biology&Biochemistry,34:651-660.
Wang KY,Kellomaki S,Li CY,et al.2003.Light and wateruse efficiencies of pine shoots exposed to elevated carbon dioxide and temperature.Annals of Botany,92:53-64.
Weishaar JL,Aiken GR,Bergamaschi BA,et al.2003.Evaluation of specific ultraviolet absorbance as an indicator of the chemical composition and reactivity of dissolved organic carbon.Environmental Science&Technology,37:4702-4708.
Xu XK,Luo XB,Jiang SH,et al.2012.Biodegradation of dissolved organic carbon in soil extracts and leachates from a temperate forest stand and its relationship to ultraviolet absorbance.Chinese Science Bulletin,57:912-920.
Zhang YB,Duan BL,Qiao YZ,et al.2008.Leaf photosynthesis of Betula albosinensis seedlings as affected by elevated CO2 and planting density.Forest Ecology and Management,255:1937-1944.