Distribution of fatty acids in the alpine grassland soils of the Qinghai-Tibetan Plateau
文献类型：期刊论文
| 作者 | Dai GuoHua1; Zhu ShanShan1; Liu ZongGuang1; Chen LiTong2; He JinSheng2,3; Feng XiaoJuan1 |
| 刊名 | science china-earth sciences
 |
| 出版日期 | 2016-07-01 |
| 卷号 | 59期号:7页码:1329-1338 |
| 关键词 | Qinghai-Tibetan Plateau Soil organic matter Biomarker Fatty acids Distribution sources |
| 英文摘要 | 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. |
| WOS标题词 | science & technology ; physical sciences |
| 类目[WOS] | geosciences, multidisciplinary |
| 研究领域[WOS] | geology |
| 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 |
| WOS记录号 | WOS:000379345900002 |
| 源URL | [http://ir.nwipb.ac.cn/handle/363003/6473]  |
| 专题 | 西北高原生物研究所_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. |
入库方式： OAI收割
来源：西北高原生物研究所
浏览0
下载0
收藏0
其他版本
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。