干旱区生态环境知识资源中心(Arid): Phytolith-occluded carbon sequestration potential in three major steppe types along a precipitation gradient in Northern China

Arid

DOI	10.1002/ece3.7155
	Phytolith-occluded carbon sequestration potential in three major steppe types along a precipitation gradient in Northern China
	Qi, Limin; Sun, Tingyu; Guo, Xudong; Guo, Ying; Li, Frank Yonghong
通讯作者	Li, FY (corresponding author), Inner Mongolia Univ, Sch Ecol & Environm, Minist Educ, Key Lab Ecol & Resource Use Mongolian Plateau, Hohhot 010021, Peoples R China. ; Li, FY (corresponding author), Inner Mongolia Univ, Sch Ecol & Environm, Inner Mongolia Key Lab Grassland Ecol, Hohhot 010021, Peoples R China.
来源期刊	ECOLOGY AND EVOLUTION
ISSN	2045-7758
出版年	2021
卷号	11 期号:3 页码:1446-1456
英文摘要	Phytolith-occluded carbon (PhytOC) is an important long-term stable carbon fraction in grassland ecosystems and plays a promising role in global carbon sequestration. Determination of the PhytOC traits of different plants in major grassland types is crucial for precisely assessing their phytolith carbon sequestration potential. Precipitation is the predominant factor in controlling net primary productivity (NPP) and species composition of the semiarid steppe grasslands. We selected three representative steppe communities of the desert steppe, the dry typical steppe, and the wet typical steppe in Northern Grasslands of China along a precipitation gradient, to investigate their species composition, biomass production, and PhytOC content for quantifying its long-term carbon sequestration potential. Our results showed that (a) the phytolith and PhytOC contents in plants differed significantly among species, with dominant grass and sedge species having relatively high contents, and the contents are significantly higher in the below- than the aboveground parts. (b) The phytolith contents of plant communities were 16.68, 17.94, and 15.85 g/kg in the above- and 86.44, 58.73, and 76.94 g/kg in the belowground biomass of the desert steppe, the dry typical steppe, and the wet typical steppe, respectively; and the PhytOC contents were 0.68, 0.48, and 0.59 g/kg in the above- and 1.11, 0.72, and 1.02 g/kg in the belowground biomass of the three steppe types. (c) Climatic factors affected phytolith and PhytOC production fluxes of steppe communities mainly through altering plant production, whereas their effects on phytolith and PhytOC contents were relatively small. Our study provides more evidence on the importance of incorporating belowground PhytOC production for estimating phytolith carbon sequestration potential and suggests it crucial to quantify belowground PhytOC production taking into account of plant perenniality and PhytOC deposition over multiple years.
英文关键词	belowground PhytOC production desert steppe perennial grass phytolith‐ occluded carbon species composition typical steppe
类型	Article
语种	英语
开放获取类型	DOAJ Gold, Green Published
收录类别	SCI-E
WOS记录号	WOS:000604279200001
WOS关键词	INNER-MONGOLIA ; SILICON ; ACCUMULATION ; DISSOLUTION ; GRASSLANDS ; BIOMASS ; IMPACT ; PLANTS
WOS类目	Ecology ; Evolutionary Biology
WOS研究方向	Environmental Sciences & Ecology ; Evolutionary Biology
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/347829
作者单位	[Qi, Limin; Guo, Xudong; Li, Frank Yonghong] Inner Mongolia Univ, Sch Ecol & Environm, Minist Educ, Key Lab Ecol & Resource Use Mongolian Plateau, Hohhot 010021, Peoples R China; [Qi, Limin; Guo, Xudong; Li, Frank Yonghong] Inner Mongolia Univ, Sch Ecol & Environm, Inner Mongolia Key Lab Grassland Ecol, Hohhot 010021, Peoples R China; [Qi, Limin; Sun, Tingyu; Guo, Ying; Li, Frank Yonghong] Inner Mongolia Univ, Minist Educ China & Inner Mongolia Autonomous Reg, Collaborat Innovat Ctr Grassland Ecol Secur, Hohhot, Peoples R China; [Qi, Limin] Chinese Acad Agr Sci, Inst Grassland Res, Hohhot, Peoples R China
推荐引用方式 GB/T 7714	Qi, Limin,Sun, Tingyu,Guo, Xudong,et al. Phytolith-occluded carbon sequestration potential in three major steppe types along a precipitation gradient in Northern China[J],2021,11(3):1446-1456.
APA	Qi, Limin,Sun, Tingyu,Guo, Xudong,Guo, Ying,&Li, Frank Yonghong.(2021).Phytolith-occluded carbon sequestration potential in three major steppe types along a precipitation gradient in Northern China.ECOLOGY AND EVOLUTION,11(3),1446-1456.
MLA	Qi, Limin,et al."Phytolith-occluded carbon sequestration potential in three major steppe types along a precipitation gradient in Northern China".ECOLOGY AND EVOLUTION 11.3(2021):1446-1456.