Distribution of soil carbon in different grassland types of the Qinghai-Tibetan Plateau

NWIPB OpenIR

	Distribution of soil carbon in different grassland types of the Qinghai-Tibetan Plateau
	Liu Shu-li ; Du Yan-gong ; Zhang Fa-wei ; Lin Li ; Li Yi-kang ; Guo Xiao-wei ; Li Qian ; Cao Guang-min
	2016-10-01
发表期刊	JOURNAL OF MOUNTAIN SCIENCE
摘要	Accurate estimate of soil carbon storage is essential to reveal the role of soil in global carbon cycle. However, there is large uncertainty on the estimation of soil organic carbon (SOC) storage in grassland among previous studies, and the study on soil inorganic carbon (SIC) is still lack. We surveyed 153 sites during plant peak growing season and estimated SOC and SIC for temperate desert, temperate steppe, alpine steppe, steppe meadow, alpine meadow and swamp, which covered main grassland in the Qinghai Plateau during 2011 to 2012. The results showed that the vertical and spatial distributions of SOC and SIC varied by grassland types. The SOC amount mainly decreased from southeast to northwest, whereas the SIC amount increased from southeast to northwest. The magnitude of SOC amount in the top 50 cm across grassland types ranked by: swamp > alpine meadow > steppe meadow > temperate steppe > alpine steppe > temperate desert, while the SIC amount showed an opposite order. There was a great deal of variation in proportion of SOC and SIC among different grassland types (from 55.17 to 94.59 for SOC and 5.14 to 44.83 for SIC). The total SOC and SIC storage was 5.78 Pg and 1.37 Pg, respectively, in the top 50 cm of soil in Qinghai Province. The mixed linear model revealed that grassland types was the predominant factor in spatial variations of SOC amount while grassland types and soil pH accounted for those of SIC amount. Our results suggested that the community shift of alpine meadow towards alpine grassland induced by climate warming would decrease carbon sequestration capacity by 6.0 kg C m(2).
文献类型	期刊论文
条目标识符	http://210.75.249.4/handle/363003/32862
专题	中国科学院西北高原生物研究所
推荐引用方式 GB/T 7714	Liu Shu-li,Du Yan-gong,Zhang Fa-wei,et al. Distribution of soil carbon in different grassland types of the Qinghai-Tibetan Plateau[J]. JOURNAL OF MOUNTAIN SCIENCE,2016.
APA	Liu Shu-li.,Du Yan-gong.,Zhang Fa-wei.,Lin Li.,Li Yi-kang.,...&Cao Guang-min.(2016).Distribution of soil carbon in different grassland types of the Qinghai-Tibetan Plateau.JOURNAL OF MOUNTAIN SCIENCE.
MLA	Liu Shu-li,et al."Distribution of soil carbon in different grassland types of the Qinghai-Tibetan Plateau".JOURNAL OF MOUNTAIN SCIENCE (2016).