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Effects of slope aspect on soil enzyme activity and microbial nutrient limitation in subalpine region of wes-tern Sichuan,China

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Author:: No author available

Journal Title:: Chinese Journal of Applied Ecology

Issue:: 11

DOI:: 10.13287/j.1001-9332.202311.003

Key Word:: 酶化学计量比;养分限制;坡向;植被类型;川西亚高山;enzyme stoichiometry;nutrient limitation;slope aspect;vegetation type;subalpine region of western Sichuan

Abstract：研究土壤微生物代谢的资源限制对理解生态系统的功能和过程至关重要.然而,山地生态系统土壤微生物养分限制特征在小尺度,尤其是坡向上的空间分异格局和驱动因素仍不清楚.本研究在具有代表性的川西亚高山理县米亚罗选取了植被类型不同的阳坡(灌丛)和阴坡(森林),在黑水县雅克夏选取了植被类型相同的阳坡和阴坡(灌丛),测定了参与土壤碳氮磷循环的酶活性,通过酶化学计量比量化了微生物的养分限制.结果表明:不同坡向间土壤酶活性及其化学计量比在米亚罗差异显著,而在雅克夏则不显著.米亚罗阳坡土壤碳氮磷获取酶化学计量比为1∶0.96∶0.92,接近于全球尺度上的1∶1∶1,米亚罗阴坡(1∶1.39.∶0.75)和雅克夏不同坡向(1∶1.09∶1.35)则偏离于1∶1∶1.两个地点坡向间矢量长度无显著差异,表明坡向对微生物碳相对限制无显著影响.米亚罗阳坡矢量角度(43.6°)显著高于阴坡(28.7°),微生物主要受氮的相对限制,偏最小二乘路径模型显示,矢量角度主要受土壤养分计量比的直接影响.而雅克夏不同坡向间矢量角度介于50.3°～51.4°,且坡向间无显著差异.坡向间植被类型的不同通过土壤性质驱动了土壤酶活性及微生物养分限制的变异,为预测土壤酶活性及微生物养分限制的空间格局提供了科学依据.

Reference

[1]黄伟佳,刘春,刘岳,等.南岭山地不同海拔土壤生态化学计量特征及影响因素[J].2023,32(1).
[2]彭子洋,刘卫星,田瑞,等.海拔和坡向对唐古拉山土壤胞外酶活性的影响[J].2021,(19).
[3]Sinsabaugh Robert L.,Hill Brian H.,Follstad Shah Jennifer J..Ecoenzymatic stoichiometry of microbial organic nutrient acquisition in soil and sediment[J].2009,462(7274).
[4]马雪华.川西高山暗针叶林区的采伐与水土保持[J].1963,(2).
[5]张荣,余飞燕,周润惠,等.坡向和坡位对四川夹金山灌丛群落结构与物种多样性特征的影响[J].2020,(8).
[6]Zhong Zheke,Makeschin Franz.Differences of Soil Microbial Biomass and Nitrogen Transformation under Two Forest Types in Central Germany[J].2006,283(1-2).
[7]Stephan Hättenschwiler,Alexei V. Tiunov,Stefan Scheu.Biodiversity and Litter Decomposition in Terrestrial Ecosystems[J].2005,36.
[8]郭滨德,张远东,王晓春.川西高原不同坡向云、冷杉树轮对快速升温的响应差异[J].2016,(2).
[9].Soil extracellular enzyme activity and stoichiometry in China's forests[J].2020,34(7).
[10]焦泽彬,李羿桥,陈子豪,等.川西亚高山不同森林类型土壤酶活性对短期凋落物输入量变化的响应[J].2021,(3).
[11].Soil enzyme activity and stoichiometry in forest ecosystems along the North-South Transect in eastern China (NSTEC)[J].2017,104.
[12]Peng, Xiaoqian,Wang, Wei.Stoichiometry of soil extracellular enzyme activity along a climatic transect in temperate grasslands of northern China[J].2016,98.
[13]Zhiming Guo,Xinyu Zhang,Sophie M. Green,etc.Soil enzyme activity and stoichiometry along a gradient of vegetation restoration at the Karst Critical Zone Observatory in Southwest China[J].2019,30(16).
[14]Cui, Yongxing,Fang, Linchuan,Guo, Xiaobin,etc.Natural grassland as the optimal pattern of vegetation restoration in arid and semi-arid regions: Evidence from nutrient limitation of soil microbes.[J].2019,648.
[15]Sinsabaugh, Robert L.,Shah, Jennifer J. Follstad,BE Futuyma, DJ.Ecoenzymatic Stoichiometry and Ecological Theory[J].2012,43.
[16]Shen, Fangfang,Wu, Jianping,Fan, Houbao,etc.Soil N/P and C/P ratio regulate the responses of soil microbial community composition and enzyme activities in a long-term nitrogen loaded Chinese fir forest[J].2019,436(1/2).
[17]Kazuki,Fujita,Takashi,Kunito,Junko,Matsushita,etc.Nitrogen supply rate regulates microbial resource allocation for synthesis of nitrogen-acquiring enzymes.[J].2018,13(8).
[18]史丽娟,王辉民,付晓莉,等.中亚热带典型人工林土壤酶活性及其化学计量特征[J].2020,(6).
[19]Muscolo Adele,Ronzello Giuliana,Vecchio Giuseppe,etc.Influence of slope aspects on soil chemical and biochemical properties in a Pinus laricio forest ecosystem of Aspromonte (Southern Italy)[J].2008,44(4).
[20]曾泉鑫,张秋芳,林开淼,等.酶化学计量揭示5年氮添加加剧毛竹林土壤微生物碳磷限制[J].2021,(2).
[21]万忠梅,宋长春.土壤酶活性对生态环境的响应研究进展[J].2009,(4).
[22]Zhao, F. Z.,Ren, C. J.,Han, X. H.,etc.Changes of soil microbial and enzyme activities are linked to soil C, N and P stoichiometry in afforested ecosystems[J].2018,427.
[23]Contosta AR,Cusack D,Allison SD,etc.Stoichiometry of soil enzyme activity at global scale[J].2008,11(11).
[24]Yuan, Zi-Qiang,Fang, Chao,Zhang, Rong,etc.Topographic influences on soil properties and aboveground biomass in lucerne-rich vegetation in a semi-arid environment[J].2019,344.
[25]罗攀,陈浩,肖孔操,等.地形、树种和土壤属性对喀斯特山区土壤胞外酶活性的影响[J].2017,(6).