Carbon versus nitrogen release from root and leaf litter is modulated by litter position and plant functional type

doi:10.1111/1365-2745.14026

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	Carbon versus nitrogen release from root and leaf litter is modulated by litter position and plant functional type
	Erdenebileg, Enkhmaa 4,5; Wang, Congwen 4; Yu, Wanying 3; Ye, Xuehua ; Pan, Xu 2; Huang, Zhenying ; Liu, Guofang ; Cornelissen, Johannes H. C.
刊名	JOURNAL OF ECOLOGY
	2023
卷号	111 期号:1 页码:198-213
关键词	dryland leaf and fine root legume litter decomposition litter position litter quality plant functional type plant-soil (below-ground) interactions
ISSN号	0022-0477
DOI	10.1111/1365-2745.14026
文献子类	Article
英文摘要	Litters of leaves and roots of different qualities occur naturally above- and below-ground, respectively, where they decompose in contrasting abiotic and biotic environments. Therefore, ecosystem carbon (C) and nitrogen (N) dynamics can be strongly affected by the combination of litter position and quality. However, it is poorly understood how C versus N turnover of litters depend on the interplay among plant functional type (PFT), organs, traits and litter position. In a semi-arid inland dune, soil surface and buried leaf litters and buried fine roots of 25 species across three PFTs (herbs, legume shrubs and nonlegume shrubs) were incubated for 3, 6, 9, 12, 18 and 24 months to investigate litter decomposition and C and N dynamics. Morphological and chemical (nutrient and NMR carbon) traits of initial litters of leaves and fine roots were determined. The litter decomposition rates (k values) of surface leaves and buried fine roots did not differ, but buried fine roots and buried leaf litter decomposed faster than surface leaf litter. Ratios of k values of surface leaves to buried leaves decreased with leaf C:N ratio. Herbs and legume shrubs decomposed faster than nonlegume shrubs for buried fine roots, but not for leaves. At given C loss, buried fine roots had higher N loss than leaf litters; legume shrubs with relatively higher N or lower C:N ratio had higher N loss than nonlegume shrubs. Stronger positive relationships between C and N losses were shown in leaves and legume shrubs than in fine roots and nonlegume shrubs respectively. Synthesis. The generality of faster N release of legume litters at given C release highlights the importance of legumes in N cycling in semi-arid ecosystems where N is the limiting factor. The dynamics and coordination of C versus N release as a function of litter quality are modulated by litter position and PFT. These findings have important implications for the development of process-based models on C and N cycles in the context of on-going global change potentially altering the functional composition of plant communities and the relative quantities and qualities of above-ground versus below-ground litter.
学科主题	Plant Sciences ; Ecology
电子版国际标准刊号	1365-2745
出版地	HOBOKEN
WOS关键词	C-13 NMR-SPECTROSCOPY ; DECOMPOSITION RATES ; TERRESTRIAL ECOSYSTEMS ; PHOSPHORUS DYNAMICS ; SUBSTRATE QUALITY ; MASS-LOSS ; SOIL ; GROWTH ; CLIMATE ; TRAITS
WOS研究方向	Science Citation Index Expanded (SCI-EXPANDED)
语种	英语
出版者	WILEY
WOS记录号	WOS:000882717100001
资助机构	National Key Research and Development Program of China [2018YFE0182800] ; Strategic Priority Research Program of the Chinese Academy of Sciences [XDA23080302]
内容类型	期刊论文
源URL	[http://ir.ibcas.ac.cn/handle/2S10CLM1/29085]
专题	植被与环境变化国家重点实验室
作者单位	1.Cornelissen, Johannes H. C.] Vrije Univ, Syst Ecol, A LIFE, Amsterdam, Netherlands 2.Northeast Normal Univ, Inst Grassland Sci, Key Lab Vegetat Ecol, Minist Educ, Jilin, Jilin, Peoples R China 3.Mongolian Acad Sci, Bot Garden & Res Inst, Ulaanbaatar, Mongolia, Peoples R China 4.Chinese Acad Sci, Inst Bot, State Key Lab Vegetat & Environm Change, Beijing, Peoples R China 5.Univ Chinese Acad Sci, Beijing, Peoples R China 6.Chinese Acad Forestry, Inst Wetland Res, Beijing, Peoples R China
推荐引用方式 GB/T 7714	Erdenebileg, Enkhmaa,Wang, Congwen,Yu, Wanying,et al. Carbon versus nitrogen release from root and leaf litter is modulated by litter position and plant functional type[J]. JOURNAL OF ECOLOGY,2023,111(1):198-213.
APA	Erdenebileg, Enkhmaa.,Wang, Congwen.,Yu, Wanying.,Ye, Xuehua.,Pan, Xu.,...&Cornelissen, Johannes H. C..(2023).Carbon versus nitrogen release from root and leaf litter is modulated by litter position and plant functional type.JOURNAL OF ECOLOGY,111(1),198-213.
MLA	Erdenebileg, Enkhmaa,et al."Carbon versus nitrogen release from root and leaf litter is modulated by litter position and plant functional type".JOURNAL OF ECOLOGY 111.1(2023):198-213.