Distribution of fatty acids in the alpine grassland soils of the Qinghai-Tibetan Plateau

doi:10.1007/s11430-016-5271-2

NWIPB OpenIR

	Distribution of fatty acids in the alpine grassland soils of the Qinghai-Tibetan Plateau
	Dai GuoHua 1; Zhu ShanShan 1; Liu ZongGuang 1; Chen LiTong 2; He JinSheng 2,3; Feng XiaoJuan 1
	2016-07-01
发表期刊	SCIENCE CHINA-EARTH SCIENCES
卷号	59 期号:7 页码:1329-1338
文章类型	Article
摘要	As an important biomarker, fatty acids (FAs) have been extensively used to trace the origin of organic matter in sediments and soils. However, studies of the distribution and abundance of FAs in alpine grassland soils are still rare, especially on the Qinghai-Tibetan Plateau (QTP), the highest plateau in the world, which contributes sediments to many large rivers in Asia. This study investigates the composition, distribution and source of FAs with increasing soil depths from 17 typical alpine grassland sites in the QTP. The most abundant FAs included the ubiquitous C-16 FA and even-numbered long-chain FAs (C-20-C-30), indicating mixed inputs from microbial and higher plant sources. Source apportionment showed that higher plants were the dominant contributor of FAs (approximately 40%) in QTP soils. The abundance of FAs decreased with soil depth, with the highest value (1.08 +/- 0.09 mg/g OC) at a 0-10 cm depth and the lowest value (0.46 +/- 0.12 mg/g OC) at a 50-70 cm depth, due to much lower plant inputs into the deeper horizons. The total concentration of FAs was negatively correlated to the mean annual temperature (MAT; P < 0.05) and soil pH (P < 0.01), suggesting that the preservation of FAs was favored in low-MAT and low-pH soils on the QTP. The abundance of fresh OC source FAs increased significantly with the mean annual precipitation (MAP; P < 0.05), indicating that high MAP facilitates the accumulation of fresh FAs in QTP soils. Other environmental parameters, such as the soil mineral content (aluminum and iron oxide), microbial community composition as well as litter quality and quantity, may also exert a strong control on the preservation of FAs in QTP soils and warrant further research to better understand the mechanisms responsible for the preservation of FAs in QTP soils.
关键词	Qinghai-tibetan Plateau Soil Organic Matter Biomarker Fatty Acids Distribution Sources
WOS标题词	Science & Technology ; Physical Sciences
DOI	10.1007/s11430-016-5271-2
关键词[WOS]	ORGANIC-MATTER ; EXTRACTABLE LIPIDS ; CARBON ; SEDIMENTS ; FOREST ; CHINA ; PLANT ; DEGRADATION ; BIOMARKERS ; RESIDUES
收录类别	SCI
语种	英语
项目资助者	Chinese National Key Development Program for Basic Research(2014CB954003 ; National Natural Science Foundation of China(31370491 ; National 1000 Young Talents Program ; "Strategic Priority Research Program-Climate Change: Carbon Budget and Relevant Issues" of the Chinese Academy of Sciences(XDA05050404) ; 2015CB954201) ; 41503073)
WOS研究方向	Geology
WOS类目	Geosciences, Multidisciplinary
WOS记录号	WOS:000379345900002
引用统计	被引频次：2[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	http://210.75.249.4/handle/363003/6473
专题	中国科学院西北高原生物研究所
作者单位	1.Chinese Acad Sci, Inst Bot, State Key Lab Vegetat & Environm Change, Beijing 100093, Peoples R China 2.Chinese Acad Sci, Northwest Inst Plateau Biol, Key Lab Adaptat & Evolut Plateau Biota, Xining 810008, Peoples R China 3.Peking Univ, Dept Ecol, Coll Urban & Environm Sci, Beijing 100871, Peoples R China
推荐引用方式 GB/T 7714	Dai GuoHua,Zhu ShanShan,Liu ZongGuang,et al. Distribution of fatty acids in the alpine grassland soils of the Qinghai-Tibetan Plateau[J]. SCIENCE CHINA-EARTH SCIENCES,2016,59(7):1329-1338.
APA	Dai GuoHua,Zhu ShanShan,Liu ZongGuang,Chen LiTong,He JinSheng,&Feng XiaoJuan.(2016).Distribution of fatty acids in the alpine grassland soils of the Qinghai-Tibetan Plateau.SCIENCE CHINA-EARTH SCIENCES,59(7),1329-1338.
MLA	Dai GuoHua,et al."Distribution of fatty acids in the alpine grassland soils of the Qinghai-Tibetan Plateau".SCIENCE CHINA-EARTH SCIENCES 59.7(2016):1329-1338.