Carbon allocation patterns in forbs and grasses differ in responses to mowing and nitrogen fertilization in a temperate grassland

doi:10.1016/j.ecolind.2022.108588

	Carbon allocation patterns in forbs and grasses differ in responses to mowing and nitrogen fertilization in a temperate grassland
	Zhang, Lulu ; Yang, Liuyi ; Zhou, Huirong ; Ren, Lifei ; Li, Wenchao ; Bai, Wenming; Zhang, Wen-Hao
	2022
发表期刊	ECOLOGICAL INDICATORS
ISSN	1470-160X
卷号	135
摘要	Mowing has been a routine grassland management with consequences of removing nutrients from the nitrogen (N)-limited grassland ecosystems. Carbon (C) allocation plays important roles in plant growth and responses to changing environments. Despite studies on interactions between N fertilization and mowing, no studies have specifically focused on responses of C allocation priorities to N fertilization and mowing at plant functional groups and individual species levels. In the present study, 13C isotope labelling was used to trace the effects of 3year of N fertilization and mowing on the fate of newly-assimilated C (accumulation and allocation priorities) at community, functional group and species levels in a temperate grassland of northern China. We applied the allometric allocation theory to explain the differential C allocation patterns among the organs of different species. Mowing and N fertilization for three consecutive years had no impacts on accumulation of newlyassimilated C at community level. However, C allocation in forbs and grasses differed markedly in their responses to mowing and N fertilization, such that mowing enhanced C accumulation in forbs and N fertilization enhanced C accumulation in grasses. In addition, mowing increased 13C allocation to stolon of forb species, thus facilitating their propagation. Moreover, N fertilization increased 13C allocation to rhizomes of grass species, ensuring clonal grasses to occupy a new niche. We demonstrated that grasses and forbs in a temperate grassland evolved different strategies of C allocation in response to mowing and N fertilization. The contrasting responses may account for the observation that N fertilization and mowing had no impacts on C accumulation at the community level. Our results highlight the necessity to monitor C allocation at functional group and dominant plant species levels, rather than at community level of grasslands exclusively for mechanistically understanding how grasslands respond to mowing and N fertilization.
关键词	Allometric allocation theory Carbon allocation and accumulation Forbs and grasses Mowing Nitrogen enrichment Temperate grasslands
学科领域	Biodiversity Conservation ; Environmental Sciences
DOI	10.1016/j.ecolind.2022.108588
收录类别	SCI
语种	英语
WOS关键词	BIOMASS ALLOCATION ; PLANT DIVERSITY ; SPECIES RICHNESS ; INNER-MONGOLIA ; SOIL ; DEPOSITION ; COMMUNITY ; TERM ; C-13 ; ENRICHMENT
WOS研究方向	Science Citation Index Expanded (SCI-EXPANDED)
WOS记录号	WOS:000761328700003
出版者	ELSEVIER
文献子类	Article
出版地	AMSTERDAM
EISSN	1872-7034
资助机构	National Natural Science Foundation of China [31830011, 31870457]
作者邮箱	whzhang@ibcas.ac.cn
作品OA属性	gold
引用统计	被引频次：7[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/2S10CLM1/28999
专题	植被与环境变化国家重点实验室
作者单位	1.[Zhang, Lulu 2.Yang, Liuyi 3.Zhou, Huirong 4.Ren, Lifei 5.Li, Wenchao 6.Bai, Wenming 7.Chinese Acad Sci, Inst Bot, State Key Lab Vegetat & Environm Change, Beijing 100093, Peoples R China 8.Univ Chinese Acad Sci, Coll Resources & Environm, Beijing 100049, Peoples R China
推荐引用方式 GB/T 7714	Zhang, Lulu,Yang, Liuyi,Zhou, Huirong,et al. Carbon allocation patterns in forbs and grasses differ in responses to mowing and nitrogen fertilization in a temperate grassland[J]. ECOLOGICAL INDICATORS,2022,135.
APA	Zhang, Lulu.,Yang, Liuyi.,Zhou, Huirong.,Ren, Lifei.,Li, Wenchao.,...&Zhang, Wen-Hao.(2022).Carbon allocation patterns in forbs and grasses differ in responses to mowing and nitrogen fertilization in a temperate grassland.ECOLOGICAL INDICATORS,135.
MLA	Zhang, Lulu,et al."Carbon allocation patterns in forbs and grasses differ in responses to mowing and nitrogen fertilization in a temperate grassland".ECOLOGICAL INDICATORS 135(2022).

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