亚高山红桦根及根际土壤生化特性对升高温度和CO2的响应

journal6 ›› 2008, Vol. 29 ›› Issue (3): 91-96.

亚高山红桦根及根际土壤生化特性对升高温度和CO₂的响应

（1.四川大学生命科学学院,四川成都610065;2.四川大学环境科学与工程系,四川成都610065;3.四川农业大学林学园艺学院,四川雅安625014）

出版日期:2008-05-25 发布日期:2012-05-23
通讯作者: 孙辉，博士，副教授，主要从事森林土壤学与全球变化的区域响应研究.E-mail:sunhuifiles@gmail.com.
作者简介:蒋舜媛(1973-)，四川成都人，四川大学生命科学学院博士生，副研究员，主要从事资源植物、遗传学与环境生态研究
基金资助:
国家自然科学基金资助项目(30471378/C02060106)；国家重点基础研究发展规划资助项目(2005CB422006)

Responses of Soil Biological Properties of Betula Roots and Rhizosphere to Short-Term Temperature and CO2 Elevation in the Subalpine Zone

(1.College of Life Science,Sichuan University,Chengdu 610065,China;2.Department of Environmental Science and Engineering,Sichuan University,Chengdu 610065,China;3.Forest and Horticulture College,Sichuan Agriculture University,Yaan 625014,China)

Online:2008-05-25 Published:2012-05-23

摘要/Abstract

摘要：通过川西亚高山野外大型控制实验，研究了红桦不同密度下的根系生物量、根际土壤微生物数量和根际土壤酶活性对短期升高温度（ET，相对室外平均升温2.4±0.4 ℃）、升高大气CO2浓度（EC，平均增加15.5±1.0 μmol·L^-1）及交互作用（ETC，生长室相对室外平均升温2.2±0.5　℃并CO₂浓度平均增加15.8±1.2　μmol·L^-1）的响应.初步结果表明：升高大气温度或CO₂浓度均能够显著促进红桦低密度和高密度下单株根系生物量；升高温度和CO₂浓度及二者共同升高对微生物类群和数量影响不同，升高温度细菌、真菌数量以及低密度下放线菌数量显著增加，而高密度下放线菌数量显著下降；升高CO₂浓度下高密度时细菌和真菌数量增加而低密度下均显著下降；升高温度（ET）显著抑制高、低密度下红桦根际土壤多酚氧化酶活性，升高CO₂（EC）根际土壤过氧化氢酶活性在2种密度条件下均不同程度升高，土壤脲酶和多酚氧化酶活性则降低；ETC条件下，根际土壤多酚氧化酶和过氧化氢酶在2种密度下均表现出不同程度的降低，但脲酶活性在高、低密度条件下对ETC表现出不同的响应结果.

关键词： 亚高山森林土壤, 土壤酶活性, 温度, 大气CO₂浓度, 土壤微生物

Abstract: Responses of root biomass,microbe quantities,and enzyme activities in rhizospheric soil of Betula albo-sinensis with high and low densities (13.5 stems·m^-2 and 4.5 stems·m^-2,respectively) to elevated atmospheric CO₂ concentration (15.5±1.0 μmol·L^-1 enrichment) and/or temperature (2.4±0.4　℃ elevation) under the controlled conditions in situ which have been monitored in the subalpine forest zone of the western Sichuan Province.The primary results indicated that root biomass increased when atmospheric temperature and/or CO₂ was elevated under the high and low density.The quantities of bacteria and epiphyte under high and low density,and actinomycetes under low density treatments were promoted by temperature elevation,while quantities of bacteria and epiphytes increased just under high density when CO₂ was elevated.Pohyphenol oxidase activity was reduced significantly under temperature elevation in both density treatments.Catalase activity increased under CO₂elevation,whereas urease and pohyphenol oxidase decreased in both density treatments.Pohyphenol oxidase and catalase activities decreased under temperature and CO₂elevation (ETC) in high and low density treatments,while urease activities varied with plant density under both temperature and CO₂ elevation (ETC).

Key words: Subalpine forest soil, soil enzyme activity, elevated temperature, atmospheric CO₂ elevation, soil microbe

蒋舜媛, 孙辉, 秦纪洪, 吴杨, 杨万勤, 杨志荣. 亚高山红桦根及根际土壤生化特性对升高温度和CO₂的响应[J]. journal6, 2008, 29(3): 91-96.

JIANG Shun-Yuan, SUN Hui, QIN Ji-Hong, WU Yang, YANG Wan-Qin, YANG Zhi-Rong. Responses of Soil Biological Properties of Betula Roots and Rhizosphere to Short-Term Temperature and CO2 Elevation in the Subalpine Zone[J]. journal6, 2008, 29(3): 91-96.

参考文献

[1] GENTHON C,BARNOLA J M,Raynaud D.Vostok Ice Core:Climatic Response to CO2 and Orbital Forcing Changes Over the Last Climatic Cycle [J].Nature,1987,329:414-418.

[2] IPCC.Third Assessment Report.Climate Change 2001 [M].Cambridge:Cambridge University Press,2001.

[3] COPLEY J.Ecology Goes Underground [J].Nature,2000,406:452-454.

[4] KANDELER E,TSCHERKO D,BARDGETT R D,et al.The Response of Soil Microorganisms and Roots to Elevated CO2 and Temperature in a Terrestrial Model Ecosystem [J].Plant and Soil,1999，202(2):251-262.

[5] GORISSEN A,COTUFO M F.Elevated Carbon Dioxide Effects on Nitrogen Dynamics in Grasses,with Emphasis on Rhizosphere Processes [J].Soil Science Society of America Journal,1999,63(6):1 695-1 702.

[6] VAN GINKEL J H,GORISSEN A,POLCI D.Elevated Atmospheric Carbon dDoxide Concentration:Effects of Increased Carbon Input in a Lolium Perenne Soil on Microorganisms and Decomposition [J].Soil Biology & Biochemistry,2000,32(4):449-456.

[7] VAN GROENIGEN K J,GORISSEN A,SIX J.Decomposition of C-14-Labeled Roots in a Pasture Soil Exposed to 10 Years of Elevated CO2 [J].Soil Biology & Biochemistry,2005,37(3):497-506.

[8] DHILLION S S,ROY J,ABRAMS M.Assessing the Impact of Elevated CO2 on Soil Microbial Activity in a Mediterranean Model Ecosystem [J].Plant and Soil,1996,187(2):333-342.

[9] KANG H J,FREEMAN C.Phosphatase and Arylsulphatase Activities in Wetland Soils:Annual Variation and Controlling Factors [J].Soil Biology & Biochemistry,1999,31(3):449-454.

[10] WALDROP M P,FIRESTONE M K.Altered Utilization Patterns of Young and Old Soil C by Microorganisms Caused by Temperature Shifts and N Additions [J].Biogeochemistry,2004,67(2):235-248.

[11] MORGAN J A.Looking Beneath the Surface [J].Science,2002,1 903-1 904.

[12] JACKSON R B,EHLERINGER J R.A Global Analysis of Root Distributions for Terrestrial Biomes [J].Oecologia.1996,108:389-411.

[13] VOLDER A,GIFFORD R M,EVANS J R.Effects of Elevated Atmospheric CO2,Cutting Frequency,and Differential Day/Night Atmospheric Warming on Root Growth and Turnover of Phalaris Swards [J].Global Change Biology,2007,13:1 040-1 052.

[14] 吴秀臣,孙辉,杨万勤.土壤酶活性对温度和CO2浓度升高的响应研究 [J].土壤.2007,39(3):358-363.

[15] 郑度,林振耀,张雪芹.青藏高原与全球环境变化研究进展 [J].地学前缘,2002,9(1):95-102.

[16] 王开运.川西亚高山森林群落生态系统过程 [M].成都:四川科学技术出版社，2004：438.

[17] KNORR W,PRENTICE I C,HOUSE J I,et al.Long-Term Sensitivity of Soil Carbon Turnover to Warming [J].Nature，2005，433:298-301.

[18] 严旭升.土壤肥力研究方法 [M].北京:农业出版社,1998：212-233.

[19] 关松荫.土壤酶及其研究方法 [M].北京:农业出版社,1986.

[20] ROGERS H H,RUNION G B,KRUPA S V.Plant Responses to Atmospheric CO2 Enrichment with Emphasis an Roots and Rhizosphere [J].Environmental Pollution，199

4,83:155-159.

[21] MAYR C,MILLER M,INSAM H.Elevated CO2 Alters Community-Level Physiological Profiles and Enzyme Activities in Alpine Grassland [J].Journal of Microbiological Methods,1999,36(1-2):35-43.

[22] TAYLOR J P,WILSON B M S,MILLS R G.Comparison of Microbial Numbers and Enzymatic Activities in Surface and Subsoils Using Various Techniques [J].Soil Biology & Biochemistry,2002,34:387-401.

[23] CHROST R J,RAI H.Ectoenzyme Activity and Bacterial Secondary Production in Nutrient-Impoverished and Nutrient-Enriched Freshwater Mesocosms [J].Microbial Ecology,1993,25(2):131-150.

[24] ZAK D R,PREGITZER K S,CURTIS P S,et al.Elevated Atmospheric CO2 and Feedbacks Between Carbon and Nitrogen Cycles [J].Plant and Soil,1993,151(1):105-117.

[25] SOWERBY A,BLUM H,GRAY T R G,Ball A S.The Decomposition of Lolium Perenne in Soils Exposed to Elevated CO2:Comparisons of Mass Loss of Litter with So

il Respiration and Soil Microbial Biomass [J].Soil Biology & Biochemistry,2000,32(10):1 359-1 366.

[26] MAYR C,MILLER M,INSAM H.Elevated CO2 Alters Community-Level Physiological Profiles and Enzyme Activities in Alpine Grassland [J].Journal of Microbiological Methods,1999,36(1-2):35-43.

[27] 周礼恺.土壤酶学 [M].北京:科学出版社,1987.

[28] WALDROP M P,FIRESTONE M K.Altered Utilization Patterns of Young and Old Soil C by Microorganisms Caused by Temperature Shifts and N Additions [J].Biogeochemistry,2004,67(2):235-248.

亚高山红桦根及根际土壤生化特性对升高温度和CO₂的响应

Responses of Soil Biological Properties of Betula Roots and Rhizosphere to Short-Term Temperature and CO2 Elevation in the Subalpine Zone

PDF (PC)

可视化

摘要/Abstract

引用本文

使用本文

参考文献

相关文章 15

编辑推荐

Metrics

本文评价

[1]	余潇, 赵振宁, 邓莉兰. 不同处理对濒危植物千果榄仁种子发芽的影响[J]. 吉首大学学报（自然科学版）, 2023, 44(3): 73-79.
[2]	刘汝荣, 刘奇君. 医学生“三有”外语课程思政及其教学实践路径[J]. 吉首大学学报（自然科学版）, 2022, 43(6): 87-91.
[3]	龙沁圆, 梅钢, 田红, 徐能雄. 高温作用后砂岩物理力学性质阈值温度的确定——基于机器学习算法[J]. 吉首大学学报（自然科学版）, 2020, 41(6): 45-50.
[4]	彭春, 杨学弦, 黄勇刚, 王小云, 彭金璋. 层状半导体MoSe₂/WSe₂热学性能参数定量分析[J]. 吉首大学学报（自然科学版）, 2020, 41(5): 32-36.
[5]	骆冰洁, 姚茂君, 曹德华. 蛇足石杉芽胞萌发及生长发育的影响因素[J]. journal6, 2016, 37(1): 64-68.
[6]	邓小飞, 黄光亚, 宋志国, 张银行. 变风量空调系统的优化控制算法[J]. journal6, 2013, 34(2): 61-63.
[7]	王岩, 刘晓静, 陈万金, 王清才, 张丙新. 基于量子理论方法的原子激光冷却机理分析[J]. journal6, 2011, 32(6): 47-50.
[8]	罗及红. 基于单片机的UPS蓄电池组温度监控系统设计[J]. journal6, 2011, 32(2): 56-59.
[9]	高坤. 基于单片机的半导体制冷温度控制仪[J]. journal6, 2009, 30(4): 69-72.
[10]	刘建林, 宋作苓, 朱生虎, 薛世峰. 材料的低温断裂研究进展[J]. journal6, 2009, 30(3): 52-56.
[11]	胡爱明, 钱盛友, 唐喜梅. 超声热疗中媒质特性对声聚焦的影响[J]. journal6, 2007, 28(2): 75-77.
[12]	彭道林, 赵新宽, 黎职富, 彭楚武. 一种低成本高精度测温装置的设计[J]. journal6, 2006, 27(6): 73-76.
[13]	李小玲, 袁继敏, 廖其龙. 冶炼行车电缆更换周期的近似计算[J]. journal6, 2006, 27(5): 69-72.
[14]	杨东, 罗群, 曹慕岚, 李洁, 马丹炜. 温度胁迫对菊科杂草生理指标的影响及其适应[J]. journal6, 2006, 27(4): 75-79.
[15]	彭沛夫, 张桂芳. H₂SO₄电解液活度混沌现象[J]. journal6, 2005, 26(2): 107-109.