汶川地震灾区不同气候区土壤微生物群落碳源代谢多样性
详细信息 本馆镜像全文    |  推荐本文 | | 获取馆网全文
摘要
为探讨汶川地震灾区不同气候区土壤微生物群落功能代谢的变化,采用Biolog-ECO生态板技术,研究了亚热带湿润季风气候和半干旱干热河谷气候未受损区、受损治理区、受损未治理区土壤微生物碳源代谢的多样性变化特征.结果表明,平均颜色变化率(AWCD)在未受损区和受损治理区表现为亚热带湿润季风气候区>半干旱干热河谷气候区,在受损未治理区表现为半干旱干热河谷气候区>亚热带湿润季风气候区,不同气候区内受损未治理区AWCD值均处于最低水平;亚热带湿润季风气候区土壤微生物的碳源利用类型明显多于半干旱干热河谷气候区,在不同气候类型区内碳源利用种类均表现为受损治理区>未受损区>受损未治理区的趋势;不同气候区土壤微生物群落碳源代谢多样性特征差异显著,其中多样性指数和均匀度指数均表现为未受损区>受损治理区>受损未治理区,而受损治理区均具有最高的丰富度指数;土壤微生物群落的碳源代谢特征与土壤养分、地上植被生物量及植被覆盖度具有一定的相关性,表明地震及其次生灾害主要通过对地表植被和土壤环境的作用间接影响土壤微生物群落的碳源利用能力,在不同气候类型区与不同的受损治理情况下土壤微生物群落的碳源代谢特征具有显著差异.
The MS8. 0Wenchuan earthquake in 2008 led to huge damage to land covers in northwest Sichuan,one of the critical fragile eco-regions in China which can be divided into Semi-arid dry hot climate zone( SDHC) and Subtropical humid monsoon climate zone( SHMC). Using the method of Bilog-ECO-microplate technique,this paper aimed to determine the functional diversity of soil microbial community in the earthquake-affected areas which can be divided into undamaged area( U),recover area( R) and damaged area without recovery( D) under different climate types,in order to provide scientific basis for ecological recovery. The results indicated that the average-well-color-development( AWCD) in undamaged area and recovery area showed SDHC > SHMC,which was contrary to the AWCD in the damaged area without recovery. The AWCD of damaged area without recovery was the lowest in both climate zones. The number of carbon source utilization types of soil microbial in SHMC zone was significantly higher than that in SDHC zone. The carbon source utilization types in both climate zones presented a trend of recover area > undamaged area > damaged area without recovery. The carbon source metabolic diversity characteristic of soil microbial community was significantly different in different climate zones. The diversity index and evenness index both showed a ranking of undamaged area > recover area > damaged area without recovery. In addition,the recovery area had the highest richness index. The soil microbial carbon sources metabolism characteristic was affected by soil nutrient,aboveground vegetation biomass and vegetation coverage to some extent. In conclusion,earthquake and its secondary disasters influenced the carbon source metabolic diversity characteristic of soil microbial community mainly through the change of aboveground vegetation and soil environmental factors.
引文
[1]Vitousek P M,Matson P A.Mechanisms of nitrogen retention in forest ecosystem:a field experiment[J].Science,1984,225(4657):51-52.
    [2]Kennedy A C,Smith K L.Soil microbial diversity and the sustainability of agricultural soils[J].Plant and Soil,1995,170(1):75-86.
    [3]Harris J A,Birch P.Soil microbial activity in opencast coalmine restoration[J].Soil Use and Management,1989,5(4):155-160.
    [4]沈萍,陈向东.微生物学复兴的机遇挑战和趋势[J].微生物学报,2010,50(1):1-6.
    [5]Girvan M S,Campbell C D,Killham K,et al.Bacterial diversity promotes community stability and functional resilience after perturbation[J].Environmental Microbiology,2005,7(3):301-313.
    [6]Zhang N L,Guo J X,Wang X Y,et al.Soil microbial feedbacks to climate warming and atmospheric N deposition[J].Journal of Plant Ecology,2007,31(2):252-261.
    [7]Zelles L.Fatty acid patterns of phospholipids and lipopolys acharides in the characterization of microbial communities in soil:a review[J].Biology and Fertility of Soils,1999,29(2):111-129.
    [8]Hortan T R,Bruns T D.The molecular revolution in ectomycorrhizal ecology:peeking in to the black box[J].Molecular Ecology,2001,10(8):1855-1871.
    [9]李勇,周荣军,Densmore A L,et al.青藏高原东缘龙门山晚新生代走滑-逆冲作用的地貌标志[J].第四纪研究,2006,26(1):40-50.
    [10]欧阳志云,徐卫华,王学志,等.汶川大地震对生态系统的影响[J].生态学报,2008,28(12):5801-5809.
    [11]包维楷.汶川地震重灾区生态退化及其恢复重建对策[J].中国科学院院刊,2008,23(4):324-329.
    [12]Cui P,Lin Y M,Chen C.Destruction of vegetation due to geohazards and its environmental impacts in the Wenchuan earthquake areas[J].Ecological Engineering,2012,44:61-69.
    [13]Schaller G B,Hu J C,Pan W S,et al.The giant pandas of Wolong[M].Chicago:University of Chicago Press,1985.102-104.
    [14]Allen R B,Bellingham P J,Wiser S K.Immediate damage by an earthquake to a temperate montane forest[J].Ecology,1999,80(2):708-714.
    [15]Cheng S,Yang G,Yu H,et al.Impacts of Wenchuan Earthquake-induced landslides on soil physical properties and tree growth[J].Ecological Indicators,2012,15(1):263-270.
    [16]吴聪,王金牛,卢涛,等.汶川地震对龙门山地区山地土壤理化性质的影响[J].应用与环境生物学报,2012,18(6):911-916.
    [17]张翔,王庆安,方自力,等.汶川地震灾区自然植被恢复的先锋植物特征分析[J].中国水土保持,2011(4):47-49.
    [18]王庆安,张翔,毛竹.汶川地震生态环境破坏严重区地形高程和起伏度分布特点[J].科技导报2009,27(16):53-59.
    [19]林勇明,吴承祯,洪伟,等.汶川地震灾区典型区不同植被类型土壤种子库特征——以北川县苏保河、魏家沟流域为例[J].中国生态农业学报,2012,20(1):99-104.
    [20]Zhang B,Jiao Q J,Wu Y H,et al.Estimating soil erosion changes in the Wenchuan earthquake disaster area using geospatial information technology[J].Journal of Applied Remote Sensing,2009,3(1):Art031675,doi:10.1117/1.3153914.
    [21]严旭升.土壤肥力研究方法[M].北京:农业出版社,1998.123-174.
    [22]毕江涛,贺达汉,沙月霞,等.荒漠草原不同植被类型土壤微生物群落功能多样性[J].干旱地区农业研究,2009,27(5):149-155.
    [23]Garland J L.Analytical approaches to the characterization of samples of microbial communities using patterns of potential C source utilization[J].Soil Biology and Biochemistry,1996,28(2):213-221.
    [24]Gomez E,Ferreras L,Toresani S.Soil bacterial functional diversity as influenced by organic amendment application[J].Bioresource and Technology,2006,97(13):1484-1489.
    [25]曹成有,姚金冬,韩晓姝,等.科尔沁沙地小叶锦鸡儿固沙群落土壤微生物功能多样性[J].应用生态学报,2011,22(9):2309-2315.
    [26]Suddcn A M.Ecology:diversity and ecosystem resilience[J].Science,2000,290(5490):233-235.
    [27]董立国,袁汉民,李生宝,等.玉米免耕秸秆覆盖对土壤微生物群落功能多样性的影响[J].生态环境学报,2010,19(2):444-446.
    [28]胡亚林,汪思龙,颜绍馗.影响土壤微生物活性与群落结构因素研究进展[J].土壤通报,2006,37(1):170-176.
    [29]罗海峰.变性梯度凝胶电泳技术研究土壤微生物多样性[D].北京:中国科学院生态环境研究中心,2004.105-106.
    [30]李云,孙波,李忠佩,等.不同气候条件对旱地红壤微生物群落代谢特征的长期影响[J].土壤,2011,43(1):60-66.
    [31]Harris J A.Measurements of the soil microbial community for estimating the success of restoration[J].European Journal of Soil Science,2003,54(4):801-808.
    [32]Waid J S.Does soil biodiversity depend upon metabiotic activity and influences·[J].Applied Soil Ecology,1999,13(2):151-158.
    [33]张广帅,邓浩俊,俞伟,等.泥石流频发区山地土壤环境因子与植被群落垂直梯度及其关系分析——以云南小江流域为例[J].应用与环境生物学报,2014,20(4):646-654.
    [34]罗慧芬,苗放,叶成名,等.汶川地震前后茂县植被覆盖度变化研究[J].水土保持通报,2013,33(3):202-205.

版权所有:© 2021 中国地质图书馆 中国地质调查局地学文献中心