Changes of Aboveground and Belowground Biomass Allocation in Four Dominant Grassland Species Across a Precipitation Gradient

doi:10.3389/fpls.2021.650802

	Changes of Aboveground and Belowground Biomass Allocation in Four Dominant Grassland Species Across a Precipitation Gradient
	Liu, Yongjie ; Xu, Mingjie ; Li, Guoe ; Wang, Mingxia ; Li, Zhenqing 1,2; De Boeck, Hans J.
	2021
发表期刊	FRONTIERS IN PLANT SCIENCE
ISSN	1664-462X
卷号	12
摘要	Climate change is predicted to affect plant growth, but also the allocation of biomass to aboveground and belowground plant parts. To date, studies have mostly focused on aboveground biomass, while belowground biomass and allocation patterns have received less attention. We investigated changes in biomass allocation along a controlled gradient of precipitation in an experiment with four plant species (Leymus chinensis, Stipa grandis, Artemisia frigida, and Potentilla acaulis) dominant in Inner Mongolia steppe. Results showed that aboveground biomass, belowground biomass and total biomass all increased with increasing growing season precipitation, as expected in this water-limited ecosystem. Biomass allocation patterns also changed along the precipitation gradient, but significant variation between species was apparent. Specifically, the belowground biomass: aboveground biomass ratio (i.e., B:A ratio) of S. grandis was not impacted by precipitation amount, while B:A ratios of the other three species changed in different ways along the gradient. Some of these differences in allocation strategies may be related to morphological differences, specifically, the presence of rhizomes or stolons, though no consistent patterns emerged. Isometric partitioning, i.e., constant allocation of biomass aboveground and belowground, seemed to occur for one species (S. grandis), but not for the three rhizome or stolon-forming ones. Indeed, for these species, the slope of the allometric regression between log-transformed belowground biomass and log-transformed aboveground biomass significantly differed from 1.0 and B:A ratios changed along the precipitation gradient. As changes in biomass allocation can affect ecosystem functioning and services, our results can be used as a basis for further studies into allocation patterns, especially in a context of environmental change.
关键词	aboveground biomass belowground biomass climate change grassland grassland persistence rangeland sustainability precipitation amount
学科领域	Plant Sciences
DOI	10.3389/fpls.2021.650802
收录类别	SCI
语种	英语
WOS关键词	3-DIMENSIONAL SOIL HETEROGENEITY ; PLANT BIOMASS ; TEMPORAL HETEROGENEITY ; POTENTILLA-ACAULIS ; GRAZING INTENSITY ; NITROGEN ADDITION ; ARTEMISIA-FRIGIDA ; CLIMATE-CHANGE ; LOESS PLATEAU ; WATER
WOS研究方向	Science Citation Index Expanded (SCI-EXPANDED)
WOS记录号	WOS:000644408700001
出版者	FRONTIERS MEDIA SA
文献子类	Article
出版地	LAUSANNE
资助机构	National Key Research and Development Program of China [2019YFC0507704] ; Lanzhou University [508000-561119213] ; National Natural Science Foundation of China [41571505]
作者邮箱	lizq@ibcas.ac.cn
作品OA属性	Green Published, gold
引用统计	被引频次：13[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/2S10CLM1/26605
专题	植被与环境变化国家重点实验室
作者单位	1.Lanzhou Univ, Key Lab Grassland Livestock Ind Innovat, State Key Lab Grassland Agroecosyst, Minist Agr & Rural Affairs,Coll Pastoral Agr Sci, Lanzhou, Peoples R China 2.Chinese Acad Sci, Inst Bot, State Key Lab Vegetat & Environm Change, Beijing, Peoples R China 3.Univ Chinese Acad Sci, Beijing, Peoples R China 4.De Boeck, Hans J.] Univ Antwerp, Dept Biol, Plants & Ecosyst PLECO, Antwerp, Belgium
推荐引用方式 GB/T 7714	Liu, Yongjie,Xu, Mingjie,Li, Guoe,et al. Changes of Aboveground and Belowground Biomass Allocation in Four Dominant Grassland Species Across a Precipitation Gradient[J]. FRONTIERS IN PLANT SCIENCE,2021,12.
APA	Liu, Yongjie,Xu, Mingjie,Li, Guoe,Wang, Mingxia,Li, Zhenqing,&De Boeck, Hans J..(2021).Changes of Aboveground and Belowground Biomass Allocation in Four Dominant Grassland Species Across a Precipitation Gradient.FRONTIERS IN PLANT SCIENCE,12.
MLA	Liu, Yongjie,et al."Changes of Aboveground and Belowground Biomass Allocation in Four Dominant Grassland Species Across a Precipitation Gradient".FRONTIERS IN PLANT SCIENCE 12(2021).

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