Soil fauna promote litter decomposition but do not alter the relationship between leaf economics spectrum and litter decomposability

doi:10.1016/j.soilbio.2019.107519

	Soil fauna promote litter decomposition but do not alter the relationship between leaf economics spectrum and litter decomposability
	Lin, Dunmei ; Wang, Fang ; Fanin, Nicolas 1; Pang, Mei ; Dou, Pengpeng ; Wang, Hongjuan 2; Qian, Shenhua 3; Zhao, Liang 3; Yang, Yongchuan 3; Mi, Xiangcheng 4; Ma, Keping4
	2019
发表期刊	SOIL BIOLOGY & BIOCHEMISTRY
ISSN	0038-0717
卷号	136
摘要	The leaf economics spectrum (LES) describes co-variation in leaf functional traits relevant to carbon and nutrient economics across plant species. It has been proposed that LES can be a useful predictor of litter decomposability, thereby influencing ecosystem carbon and nutrient cycling. However, the role of soil fauna in mediating the LES-decomposability relationship is largely unexplored. We evaluated leaf litter decomposability of 21 co-occurring tree species in a subtropical forest in China. We used litterbags with different mesh sizes to control litter accessibility to meso- and macrofauna. We quantified 9 leaf functional traits and 12 litter traits, and investigated how these traits were related to the losses of litter mass, carbon and nitrogen under different fauna treatments. Litter mass loss varied from 32.3 to 80.6% after 400 days of decomposition in the field. Meso- and macrofauna presence increased on average litter mass loss by 8.4%, carbon loss by 11% and nitrogen loss by 14.4%. Litter nutrient contents and stoichiometry generally had no significant effect on decomposition rates. Instead, structure-related traits such as toughness, lignin and labile compounds were generally strongly related to decomposition rates, suggesting that decomposition processes are strongly limited by energy availability. We found significant linear relationships between LES and litter mass or carbon loss, but not nitrogen loss. However, meso- and macrofauna presence did not significantly alter the regression slopes of these relationships, suggesting that meso- and macrofauna exert similar effects on decomposition of litter originating from tree species characterized by different life strategies. This study advances our understanding of the soil fauna in driving litter decomposition in subtropical forests.
关键词	Litter decomposition Carbon and nutrient cycling Soil fauna Litter traits Leaf functional traits Leaf economics spectrum
学科领域	Soil Science
DOI	10.1016/j.soilbio.2019.107519
收录类别	SCI
语种	英语
WOS关键词	FUNCTIONAL TRAITS ; NUTRIENT RELEASE ; PHOSPHORUS DYNAMICS ; FOREST-FLOOR ; RAIN-FOREST ; MASS-LOSS ; NITROGEN ; QUALITY ; CARBON ; CLIMATE
WOS研究方向	Agriculture
WOS记录号	WOS:000483908600005
出版者	PERGAMON-ELSEVIER SCIENCE LTD
文献子类	Article
出版地	OXFORD
EISSN	1879-3428
资助机构	National Natural Science Foundation of ChinaNational Natural Science Foundation of China (NSFC) [31500356] ; Chongqing Research Program of Basic Research and Frontier Technology [cstc2016jcyjA0004] ; Fundamental Research Funds for the Central UniversitiesFundamental Research Funds for the Central Universities [2018CDXYCH0014] ; 111 ProjectMinistry of Education, China - 111 Project [B13041]
作者邮箱	lindunmei@cqu.edu.cn
引用统计	被引频次：30[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	http://ir.ibcas.ac.cn/handle/2S10CLM1/19412
专题	植被与环境变化国家重点实验室
作者单位	1.Chongqing Univ, Minist Educ, Key Lab Three Gorges Reservoir Reg Ecoenvironm, Chongqing 400045, Peoples R China 2.INRA Bordeaux Sci Agro, UMR 1391, ISPA, 71 Ave Edouard Bourlaux, F-33882 Villenave Dornon, France 3.Chongqing Acad Agr Sci, Biotechnol Res Ctr, Chongqing 401329, Peoples R China 4.Chongqing Univ, Minist Educ, Joint Int Res Lab Green Bldg & Built Environm, Chongqing 400045, Peoples R China 5.Chinese Acad Sci, Inst Bot, State Key Lab Vegetat & Environm Change, Beijing 100093, Peoples R China
推荐引用方式 GB/T 7714	Lin, Dunmei,Wang, Fang,Fanin, Nicolas,et al. Soil fauna promote litter decomposition but do not alter the relationship between leaf economics spectrum and litter decomposability[J]. SOIL BIOLOGY & BIOCHEMISTRY,2019,136.
APA	Lin, Dunmei.,Wang, Fang.,Fanin, Nicolas.,Pang, Mei.,Dou, Pengpeng.,...&Ma, Keping.(2019).Soil fauna promote litter decomposition but do not alter the relationship between leaf economics spectrum and litter decomposability.SOIL BIOLOGY & BIOCHEMISTRY,136.
MLA	Lin, Dunmei,et al."Soil fauna promote litter decomposition but do not alter the relationship between leaf economics spectrum and litter decomposability".SOIL BIOLOGY & BIOCHEMISTRY 136(2019).

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