Soil organic carbon as functions of slope aspects and soil depths in a semiarid alpine region of Northwest China
文献类型：期刊论文
| 作者 | Zhu, Meng1,2; Feng, Qi1; Qin, Yanyan1,2,3; Cao, Jianjun4; Li, Huiya1,2; Zhao, Yu1,2 |
| 刊名 | CATENA
 |
| 出版日期 | 2017-05-01 |
| 卷号 | 152页码:94-102 |
| 关键词 | Semiarid alpine region Soil organic carbon Slope aspect Soil depth Profile pedotransfer function |
| ISSN号 | 0341-8162 |
| DOI | 10.1016/j.catena.2017.01.011 |
| 通讯作者 | Feng, Qi(qifeng@lzb.ac.cn) |
| 英文摘要 | Soils in alpine regions associated with complex topography are characterized by large variability in the spatial distribution of soil organic carbon (SOC). However, the patterns and topographic controls on SOC at the hill scale in semiarid alpine regions are not well understood. In this study, the effects of slope aspects and depths on SOC Were quantified based on field investigations in a mainly undisturbed region of the Qilian Mountains in northwestern China. Soil samples were collected at 0-10, 10-20, 20-40 and 40-60 cm on south-, southwest-, west-, and north-facing slopes of three hills. Results showed that the SOC density at 0-60 cm varied from 9.73 to 35.21 kg m(-2), and increased from the south- to north-facing slopes. The average SOC density on the north-facing slopes was about 32, 2.9 and 1.9 times larger than on the south-, southwest- and west-facing slopes. Both the general linear model and mixed linear model suggested that, at the hill scale, the slope aspects and soil depths explained the main variations of SOC concentration in our study. The profile pedotransfer function method indicated that the SOC varied predictably with soil depths and aspects, and the prediction functions well predicted the SOC data from literature. Our results highlight the importance of slope aspect as an indicator of the SOC, and demonstrate that the transformed aspect is a good continuous variable in predicting the SOC in the semiarid alpine region. (C) 2017 Elsevier B.V. All rights reserved. |
| 收录类别 | SCI |
| WOS关键词 | DIGITAL ELEVATION MODEL ; SOLAR-RADIATION ; ENVIRONMENTAL CONTROLS ; STORAGE PREDICTION ; TOPOGRAPHIC ASPECT ; TOTAL NITROGEN ; LOESS PLATEAU ; CROP YIELD ; LAND-USE ; STOCKS |
| WOS研究方向 | Geology ; Agriculture ; Water Resources |
| WOS类目 | Geosciences, Multidisciplinary ; Soil Science ; Water Resources |
| 语种 | 英语 |
| WOS记录号 | WOS:000395218600010 |
| 出版者 | ELSEVIER SCIENCE BV |
| URI标识 | http://www.irgrid.ac.cn/handle/1471x/2557580 |
| 专题 | 寒区旱区环境与工程研究所 |
| 通讯作者 | Feng, Qi |
| 作者单位 | 1.Chinese Acad Sci, Northwest Inst Ecoenvironm & Resources, Key Lab Ecohydrol Inland River Basin, Lanzhou 730000, Peoples R China 2.Univ Chinese Acad Sci, Beijing 100049, Peoples R China 3.Bai Long Jiang Forestry Management Bur, Res Inst Forestry Sci, Lanzhou 730070, Peoples R China 4.Northwest Normal Univ, Coll Geog & Environm Sci, Lanzhou 730070, Peoples R China |
| 推荐引用方式 GB/T 7714 | Zhu, Meng,Feng, Qi,Qin, Yanyan,et al. Soil organic carbon as functions of slope aspects and soil depths in a semiarid alpine region of Northwest China[J]. CATENA,2017,152:94-102. |
| APA | Zhu, Meng,Feng, Qi,Qin, Yanyan,Cao, Jianjun,Li, Huiya,&Zhao, Yu.(2017).Soil organic carbon as functions of slope aspects and soil depths in a semiarid alpine region of Northwest China.CATENA,152,94-102. |
| MLA | Zhu, Meng,et al."Soil organic carbon as functions of slope aspects and soil depths in a semiarid alpine region of Northwest China".CATENA 152(2017):94-102. |
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来源：寒区旱区环境与工程研究所
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