Mineralisation and Changes in the Fractions of Soil Organic Matter in Soils of the Permafrost Region, Qinghai- Tibet Plateau, China (SCI)

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	Mineralisation and Changes in the Fractions of Soil Organic Matter in Soils of the Permafrost Region, Qinghai- Tibet Plateau, China (SCI)
	Wu X. D. ; Fang H. B. ; Zhao L. ; Wu T. H. ; Li R. ; Ren Z. W. ; Pang Q. Q. ; Ding Y. J.
刊名	Permafrost and Periglacial Processes
	2014
卷号	25 期号:1 页码:35-44
英文摘要	To determine the relationship between soil organic matter (SOM) decomposition and chemistry in the permafrost region of the Qinghai-Tibet Plateau (QTP), 300-day laboratory incubations at 25 degrees C and chemical fractionation were performed to characterise the mineralisation dynamics of organic carbon from soils under five vegetation conditions. The respiration rates in wet meadows were the highest, followed by the Kobresia pygmaea meadow and K. robusta meadow. After the incubation period, all four fractions of SOM - non-polarity soluble, water soluble, holocellulose and lignin contents - showed some decline, and the SOM decreased by 16-20 per cent in soils of the steppe, meadow and wet meadow. These results suggest that a large proportion of the organic matter in soils of the permafrost region in the QTP is mineralisable. Based on the changes in chemical fractions of organic matter, it could be determined that soils with higher water-soluble fractions had higher rates of carbon mineralisation, while the mechanisms involved in the respiration of different chemical fractions are complicated. Copyright (c) 2013 John Wiley & Sons, Ltd.
收录类别	SCI
公开日期	2015-12-24
内容类型	期刊论文
源URL	[http://ir.casnw.net/handle/362004/24791]
专题	寒区旱区环境与工程研究所_中科院寒区旱区环境与工程研究所（未分类）_期刊论文
推荐引用方式 GB/T 7714	Wu X. D.,Fang H. B.,Zhao L.,et al. Mineralisation and Changes in the Fractions of Soil Organic Matter in Soils of the Permafrost Region, Qinghai- Tibet Plateau, China (SCI)[J]. Permafrost and Periglacial Processes,2014,25(1):35-44.
APA	Wu X. D..,Fang H. B..,Zhao L..,Wu T. H..,Li R..,...&Ding Y. J..(2014).Mineralisation and Changes in the Fractions of Soil Organic Matter in Soils of the Permafrost Region, Qinghai- Tibet Plateau, China (SCI).Permafrost and Periglacial Processes,25(1),35-44.
MLA	Wu X. D.,et al."Mineralisation and Changes in the Fractions of Soil Organic Matter in Soils of the Permafrost Region, Qinghai- Tibet Plateau, China (SCI)".Permafrost and Periglacial Processes 25.1(2014):35-44.