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Above- and belowground biomass allocation and its regulation by plant density in six common grassland species in China

文献类型：期刊论文

作者Sun, Yuanfeng3; Wang, Yupin3; Yan, Zhengbing2; He, Luoshu3; Ma, Suhui3; Feng, Yuhao3; Su, Haojie3; Chen, Guoping3; Feng, Yinping; Ji, Chengjun3
刊名JOURNAL OF PLANT RESEARCH
出版日期2022
卷号135期号:1页码:41-53
ISSN号0918-9440
关键词Allometry Biomass allocation Density Grassland Plant functional type R S
DOI10.1007/s10265-021-01353-w
文献子类Article
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.
学科主题Plant Sciences
电子版国际标准刊号1618-0860
出版地TOKYO
WOS关键词GLOBAL PATTERNS ; ROOT DISTRIBUTIONS ; CARBON ; COMPETITION ; PLASTICITY ; NITROGEN ; PRODUCTIVITY ; EVOLUTIONARY ; ALLOMETRY ; DESERT
WOS研究方向Science Citation Index Expanded (SCI-EXPANDED)
语种英语
出版者SPRINGER JAPAN KK
WOS记录号WOS:000709306600001
资助机构National Natural Science Foundation of China [31988102] ; National Key Research and Development Program of China [2017YFC0503906]
源URL[http://ir.ibcas.ac.cn/handle/2S10CLM1/28612]  
专题植被与环境变化国家重点实验室
作者单位1.Univ Hong Kong, Sch Biol Sci, Hong Kong, Peoples R China
2.Peking Univ, Inst Ecol, Minist Educ, Key Lab Earth Surface Proc, Beijing 100871, Peoples R China
3.Peking Univ, Inst Ecol, Minist Educ, Coll Urban & Environm Sci, Beijing 100871, Peoples R China
4.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]. JOURNAL OF PLANT RESEARCH,2022,135(1):41-53.
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,135(1),41-53.
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 135.1(2022):41-53.

入库方式： OAI收割

来源：植物研究所

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