Knowledge Management System Of Institute Of Botany,CAS
Distribution of fatty acids in the alpine grassland soils of the Qinghai-Tibetan Plateau | |
Dai GuoHua; Zhu ShanShan; Liu ZongGuang; Chen LiTong1; He JinSheng1,2; Feng XiaoJuan | |
2016 | |
发表期刊 | SCIENCE CHINA-EARTH SCIENCES |
ISSN | 1674-7313 |
卷号 | 59期号:7页码:1329-1338 |
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 |
学科领域 | Geosciences, Multidisciplinary |
DOI | 10.1007/s11430-016-5271-2 |
收录类别 | SCI |
语种 | 英语 |
WOS关键词 | ORGANIC-MATTER ; EXTRACTABLE LIPIDS ; CARBON ; FOREST ; SEDIMENTS ; PLANT ; DEGRADATION ; BIOMARKERS ; RESIDUES ; ORIGIN |
WOS研究方向 | Science Citation Index Expanded (SCI-EXPANDED) |
WOS记录号 | WOS:000379345900002 |
出版者 | SCIENCE PRESS |
文献子类 | Article |
出版地 | BEIJING |
EISSN | 1869-1897 |
资助机构 | Chinese National Key Development Program for Basic Research [2014CB954003, 2015CB954201] ; National Natural Science Foundation of ChinaNational Natural Science Foundation of China (NSFC) [31370491, 41503073] ; National 1000 Young Talents Program ; Strategic Priority Research Program-Climate Change: Carbon Budget and Relevant Issues of the Chinese Academy of SciencesChinese Academy of Sciences [XDA05050404] |
作者邮箱 | xfeng@ibcas.ac.cn |
引用统计 | |
文献类型 | 期刊论文 |
条目标识符 | http://ir.ibcas.ac.cn/handle/2S10CLM1/25115 |
专题 | 植被与环境变化国家重点实验室 |
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. |
条目包含的文件 | ||||||
文件名称/大小 | 文献类型 | 版本类型 | 开放类型 | 使用许可 | ||
Dai-2016-Distributio(744KB) | 期刊论文 | 出版稿 | 开放获取 | CC BY-NC-SA | 浏览 请求全文 |
除非特别说明,本系统中所有内容都受版权保护,并保留所有权利。
修改评论