Effects of Experimental Warming and CO2 Concentration Doubling on C-13 CPMAS NMR Spectra of Humin in Coniferous Forest Ecosystems of the Eastern Tibetan Plateau in China

doi:10.15244/pjoes/86225

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	Effects of Experimental Warming and CO2 Concentration Doubling on C-13 CPMAS NMR Spectra of Humin in Coniferous Forest Ecosystems of the Eastern Tibetan Plateau in China
	Liu, Furong 1,2; Zhang, Yongmei 2
刊名	POLISH JOURNAL OF ENVIRONMENTAL STUDIES
	2019
卷号	28 期号:4 页码:2223-2229
关键词	C-13 CPMAS NMR humin elevated temperature elevated CO2 concentration
ISSN号	1230-1485
DOI	10.15244/pjoes/86225
产权排序	1
文献子类	Article
英文摘要	Despite the perceived importance of humin to forest ecosystem C sequestration, few studies have attempted to examine the responses to elevated temperature (ET, +2.5 degrees C) and elevated atmospheric CO2 concentration (EC, 700 ppm) on the chemical structures of humin. Solid-state C-13 cross-polarization magic angle spinning nuclear magnetic resonance (C-13 CPMAS NMR) spectroscopy was applied to evaluate the 6-year effect of ET and EC on the chemical structure of humin under the coniferous forest ecosystems in the eastern Tibetan Plateau of China. Results showed that ET treatment decreased soil organic carbon (SOC), whereas EC and ETC treatment increased SOC. ET treatment decreased aromatic C and carbonyl C of humin while increasing alkyl C, the ratios of alkyl C/O-alkyl C, aliphatic C/aromatic C, and hydrophobic C/hydrophilic C. Compared with ET treatment, the ETC treatment had a similar but reduced impact on the chemical structure of humin, while EC had slightly and undetectable impact on the chemical structure of humin. The 6-year exposure to ET decreased SOC and changed the molecular structure of soil humin to be more alkyline and hydrophobic, and it was a protection mechanism to the sequestration and stability of organic C in soil.
学科主题	Environment/ecology
URL标识	查看原文
WOS关键词	SOIL ORGANIC-CARBON ; ELEVATED CO2 ; CLIMATE-CHANGE ; MATTER ; FRACTIONS ; IMPACTS ; ACIDS ; TEMPERATURE ; SUBSTANCES ; EXTRACTION
WOS研究方向	Environmental Sciences & Ecology
语种	英语
出版者	HARD
WOS记录号	WOS:000461981900020
内容类型	期刊论文
源URL	[http://210.75.237.14/handle/351003/30887]
专题	生物多样性与生态系统服务领域_生态研究
通讯作者	Zhang, Yongmei
作者单位	1.Chengdu Univ Technol, Coll Earth Sci, Chengdu, Sichuan, Peoples R China 2.Chinese Acad Sci, Chengdu Inst Biol, Chengdu, Sichuan, Peoples R China;
推荐引用方式 GB/T 7714	Liu, Furong,Zhang, Yongmei. Effects of Experimental Warming and CO2 Concentration Doubling on C-13 CPMAS NMR Spectra of Humin in Coniferous Forest Ecosystems of the Eastern Tibetan Plateau in China[J]. POLISH JOURNAL OF ENVIRONMENTAL STUDIES,2019,28(4):2223-2229.
APA	Liu, Furong,&Zhang, Yongmei.(2019).Effects of Experimental Warming and CO2 Concentration Doubling on C-13 CPMAS NMR Spectra of Humin in Coniferous Forest Ecosystems of the Eastern Tibetan Plateau in China.POLISH JOURNAL OF ENVIRONMENTAL STUDIES,28(4),2223-2229.
MLA	Liu, Furong,et al."Effects of Experimental Warming and CO2 Concentration Doubling on C-13 CPMAS NMR Spectra of Humin in Coniferous Forest Ecosystems of the Eastern Tibetan Plateau in China".POLISH JOURNAL OF ENVIRONMENTAL STUDIES 28.4(2019):2223-2229.