Variation in soil organic carbon by slope aspect in the middle of the Qilian Mountains in the upper Heihe River Basin, China
文献类型：期刊论文
| 作者 | Qin, Yanyan1,2; Feng, Qi1; Holden, Nicholas M.3; Cao, Jianjun4 |
| 刊名 | CATENA
 |
| 出版日期 | 2016-12-01 |
| 卷号 | 147页码:308-314 |
| 关键词 | Topographic factors Abiotic factors Biotic factors Soil properties Mountain grassland |
| ISSN号 | 0341-8162 |
| DOI | 10.1016/j.catena.2016.07.025 |
| 通讯作者 | Feng, Qi(qifeng@lzb.ac.cn) |
| 英文摘要 | Topography has an influence on both abiotic (e.g. soil) and biotic (e.g. vegetation) factors influencing soil organic carbon (SOC). In this study, three slope aspects, south-facing, semi-sunny (south-west), and semi-shady (northwest) of mountainous grassland in the middle of the Qilian Mountains were sampled to explore the variation in SOC caused by topography. Soil properties were analyzed at different depths (0-10, 10-20, 20-40, and 4060 cm). The results showed that except soil total organic phosphate, SOC, soil water content, soil bulk density, daily soil temperature, biomass, vegetation cover, and species richness on the semi-shady slope aspect were significantly different to those on two other slope aspects. The SOC, vegetation cover, and biomass significantly increased, from the south-facing to semi-shady slope aspect, and their values on the semi-shady slope aspect were around two times greater than on the south-facing slope aspect The plant community composition also varied by slope aspect, with Agropyron cristatum and Stipa grand's dominant on the south-facing slope aspect, and Agropyron cristatum and Carex aridula dominant on the semi-sunny slope aspect, and Kobresia humilis and Carex crebra dominant on the semi-shady slope aspect. Among all measured abiotic and biotic factors, daily soil temperature, soil bulk density and total soil organic nitrogen could be used to predict SOC, explaining 69.0% of the variation in the data (p < 0.001). On all slope aspects, SOC was greatest in the top 20 cm of soil, representing around 60.0% of the total SOC to 60 cm depth. The results indicated that the distribution of SOC was regulated by slope aspect through its influence on vegetation and soil properties in this region. Therefore, SOC protection measures should be aspect specific. (C) 2016 Elsevier B.V. All rights reserved. |
| 收录类别 | SCI |
| WOS关键词 | MEDITERRANEAN NATURAL AREAS ; NORTHWESTERN CHINA ; SPATIAL-DISTRIBUTION ; INNER-MONGOLIA ; TOPOGRAPHIC ASPECT ; OLIVE GROVE ; LAND-USE ; VEGETATION ; SEQUESTRATION ; NITROGEN |
| 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:000385598800031 |
| 出版者 | ELSEVIER SCIENCE BV |
| URI标识 | http://www.irgrid.ac.cn/handle/1471x/2557422 |
| 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, Cold & Arid Reg Environm Engn Res Inst, Lanzhou, Peoples R China 2.Bai Long Jiang Forestry Management Bur, Res Inst Forestry Sci, Lanzhou, Peoples R China 3.Univ Coll Dublin, Agr & Food Sci Ctr, UCD Sch Biosyst & Food Engn, Dublin 4, Ireland 4.Northwest Normal Univ, Coll Geog & Environm Sci, Lanzhou, Peoples R China |
| 推荐引用方式 GB/T 7714 | Qin, Yanyan,Feng, Qi,Holden, Nicholas M.,et al. Variation in soil organic carbon by slope aspect in the middle of the Qilian Mountains in the upper Heihe River Basin, China[J]. CATENA,2016,147:308-314. |
| APA | Qin, Yanyan,Feng, Qi,Holden, Nicholas M.,&Cao, Jianjun.(2016).Variation in soil organic carbon by slope aspect in the middle of the Qilian Mountains in the upper Heihe River Basin, China.CATENA,147,308-314. |
| MLA | Qin, Yanyan,et al."Variation in soil organic carbon by slope aspect in the middle of the Qilian Mountains in the upper Heihe River Basin, China".CATENA 147(2016):308-314. |
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来源：寒区旱区环境与工程研究所
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