Pedogenetic interpretations of particle-size distribution curves for an alpine environment
文献类型：期刊论文
| 作者 | Yang, Fei; Zhang, Gan-Lin1; Yang, Fan; Yang, Ren-Min |
| 刊名 | Geoderma
 |
| 出版日期 | 2016-11-15 |
| 卷号 | 282页码:9-15 |
| 关键词 | Particle-size distribution Alpine soils Loess Modal particle size Lithological discontinuity Qinghai-tibetan plateau |
| ISSN号 | 0016-7061 |
| DOI | 10.1016/j.geoderma.2016.07.003 |
| 通讯作者 | Zhang, gan-lin(glzhang@issas.ac.cn) |
| 英文摘要 | The qilian mountains are generally capped by a productive silty soil layer wherever the environment allows. as holocene loess is prevalent across the qilian mountains, we assume that at least some of these fine sediments are derived from loess deposition and that soils across the region may be genetically linked. to test these hypotheses, nine pedons in different landscapes within a typical alpine watershed of the qilian mountains were sampled. we also collected fine earth samples from glacier surfaces and crevices of glacial debris in the moraine zone. the particle-size distribution (psd) is used as a proxy for identifying aeolian fractions in soils. the psd curves of all of the fine-earth fractions examined are polymodal, although three modal sizes of roughly 16 mu m, 35 mu m and 80 mu m are found in almost all sediments in varying proportions. these modal sizes have been identified as three sources of aeolian sediments in different transport systems. the composition and thickness of loess sediments are related to local site conditions and may be related to the paleoenvironmental history of the site. clastic debris and vegetation cover serve as dust traps during different stages of soil formation in this alpine environment, and soils grow upward with accumulating loess sediment. our study demonstrates that psd curves can be used to determine the origins (and especially aeolian origins) of soils. furthermore, this study provides insight into the pedology, ecology and paleoenvironmental history of loess-affected ecosystems in alpine areas of the qinghai-tibetan plateau. (c) 2016 elsevier b.v. all rights reserved. |
| WOS关键词 | EASTERN TIBETAN PLATEAU ; QILIAN SHAN CHINA ; GRAIN-SIZE ; EOLIAN DUST ; PALEOENVIRONMENTAL CHANGE ; AEOLIAN DEPOSITION ; LOESS DEPOSITS ; MOJAVE DESERT ; FRONT RANGE ; SOIL |
| WOS研究方向 | Agriculture |
| WOS类目 | Soil Science |
| 语种 | 英语 |
| WOS记录号 | WOS:000381837100002 |
| 出版者 | ELSEVIER SCIENCE BV |
| URI标识 | http://www.irgrid.ac.cn/handle/1471x/2374365 |
| 专题 | 中国科学院大学 |
| 通讯作者 | Zhang, Gan-Lin |
| 作者单位 | 1.Chinese Acad Sci, Inst Soil Sci, State Key Lab Soil & Sustainable Agr, 71 East Beijing Rd, Nanjing 210008, Peoples R China 2.Univ Chinese Acad Sci, Beijing 100049, Peoples R China |
| 推荐引用方式 GB/T 7714 | Yang, Fei,Zhang, Gan-Lin,Yang, Fan,et al. Pedogenetic interpretations of particle-size distribution curves for an alpine environment[J]. Geoderma,2016,282:9-15. |
| APA | Yang, Fei,Zhang, Gan-Lin,Yang, Fan,&Yang, Ren-Min.(2016).Pedogenetic interpretations of particle-size distribution curves for an alpine environment.Geoderma,282,9-15. |
| MLA | Yang, Fei,et al."Pedogenetic interpretations of particle-size distribution curves for an alpine environment".Geoderma 282(2016):9-15. |
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来源：中国科学院大学
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