干旱区生态环境知识资源中心(Arid): Above- and belowground biomass allocation and its regulation by plant density in six common grassland species in China

Arid

DOI	10.1007/s10265-021-01353-w
	Above- and belowground biomass allocation and its regulation by plant density in six common grassland species in China
	Sun, Yuanfeng; Wang, Yupin; Yan, Zhengbing; He, Luoshu; Ma, Suhui; Feng, Yuhao; Su, Haojie; Chen, Guoping; Feng, Yinping; Ji, Chengjun; Shen, Haihua; Fang, Jingyun
通讯作者	Fang, JY (corresponding author), Peking Univ, Inst Ecol, Minist Educ, Coll Urban & Environm Sci, Beijing 100871, Peoples R China. ; Fang, JY (corresponding author), Peking Univ, Inst Ecol, Minist Educ, Key Lab Earth Surface Proc, Beijing 100871, Peoples R China. ; Fang, JY (corresponding author), Chinese Acad Sci, Inst Bot, State Key Lab Vegetat & Environm Change, Beijing 100093, Peoples R China.
来源期刊	JOURNAL OF PLANT RESEARCH
ISSN	0918-9440
EISSN	1618-0860
出版年	2022
英文摘要	Above- and belowground biomass allocation is an essential plant functional trait that reflects plant survival strategies and affects belowground carbon pool estimation in grasslands. However, due to the difficulty of distinguishing living and dead roots, estimation of biomass allocation from field-based studies currently show large uncertainties. In addition, the dependence of biomass allocation on plant species, functional type as well as plant density remains poorly addressed. Here, we conducted greenhouse manipulation experiments to study above- and belowground biomass allocation and its density regulation for six common grassland species with different functional types (i.e., C-3 vs C-4; annuals vs perennials) from temperate China. To explore the density regulation on the biomass allocation, we used five density levels: 25, 100, 225, 400, and 625 plant m(-2). We found that mean root to shoot ratio (R/S) values ranged from 0.04 to 0.92 across the six species, much lower than those obtained in previous field studies. We also found much lower R/S values in annuals than in perennials (C. glaucum and S. viridis vs C. squarrosa, L. chinensis, M. sativa and S. grandis) and in C-4 plants than in C-3 plants (C. squarrosa vs L. chinensis, M. sativa and S. grandis). In addition to S. grandis, plant density had significant effects on the shoot and root biomass fraction and R/S for the other five species. Plant density also affected the allometric relationships between above- and belowground biomass significantly. Our results suggest that R/S values obtained from field investigations may be severely overestimated and that R/S values vary largely across species with different functional types. Our findings provide novel insights into approximating the difficult-to-measure belowground living biomass in grasslands, and highlight that species composition and intraspecific competition will regulate belowground carbon estimation.
英文关键词	Allometry Biomass allocation Density Grassland Plant functional type R S
类型	Article
语种	英语
收录类别	SCI-E
WOS记录号	WOS:000709306600001
WOS关键词	GLOBAL PATTERNS ; ROOT DISTRIBUTIONS ; CARBON ; COMPETITION ; PLASTICITY ; NITROGEN ; PRODUCTIVITY ; EVOLUTIONARY ; ALLOMETRY ; DESERT
WOS类目	Plant Sciences
WOS研究方向	Plant Sciences
来源机构	北京大学 ; 中国科学院植物研究所
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/367639
作者单位	[Sun, Yuanfeng; Wang, Yupin; He, Luoshu; Ma, Suhui; Feng, Yuhao; Su, Haojie; Chen, Guoping; Ji, Chengjun; Fang, Jingyun] Peking Univ, Inst Ecol, Minist Educ, Coll Urban & Environm Sci, Beijing 100871, Peoples R China; [Sun, Yuanfeng; Wang, Yupin; He, Luoshu; Ma, Suhui; Feng, Yuhao; Su, Haojie; Chen, Guoping; Ji, Chengjun; Fang, Jingyun] Peking Univ, Inst Ecol, Minist Educ, Key Lab Earth Surface Proc, Beijing 100871, Peoples R China; [Yan, Zhengbing] Univ Hong Kong, Sch Biol Sci, Hong Kong, Peoples R China; [Shen, Haihua; Fang, Jingyun] 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	Sun, Yuanfeng,Wang, Yupin,Yan, Zhengbing,et al. Above- and belowground biomass allocation and its regulation by plant density in six common grassland species in China[J]. 北京大学, 中国科学院植物研究所,2022.
APA	Sun, Yuanfeng.,Wang, Yupin.,Yan, Zhengbing.,He, Luoshu.,Ma, Suhui.,...&Fang, Jingyun.(2022).Above- and belowground biomass allocation and its regulation by plant density in six common grassland species in China.JOURNAL OF PLANT RESEARCH.
MLA	Sun, Yuanfeng,et al."Above- and belowground biomass allocation and its regulation by plant density in six common grassland species in China".JOURNAL OF PLANT RESEARCH (2022).