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	Characterization of selected soils from the Lhasa region of Qinghai-Xizang Plateau, SW China
	Smith, CAS; Clark, M; Broll, G; Ping, CL; Kimble, JM; Luo, G
刊名	PERMAFROST AND PERIGLACIAL PROCESSES
	1999-07-01
卷号	10期号:3页码:211-222
关键词	alpine aridic ustochrept Qinghai-Xizang Plateau soil taxonomy subalpine
ISSN号	1045-6740
通讯作者	Smith, CAS()
英文摘要	Soils along an elevational gradient in the Himalayas from the Lhasa River Valley bottom at 3700 m in elevation through subalpine (4200 to 4600 m) and alpine (>4600 m elevation) vegetation zones were described, sampled and classified according to the USDA soil taxonomy. Active flood plain soils were classified as Aridic Ustifluvents or, on more stable valley slopes and stream terraces, as Aridic Ustochrepts. Limited soil temperature data suggest these temperate valley bottom and lower valley slope soils have a mesic soil temperature regime. Soils within the subalpine zone were estimated to have a frigid temperature regime and sample sites were classified as Typic Haploborolls or Typic Ustochrepts, depending on parent material and degree of aeolian influence on epipedon properties. At elevations above 4600 m elevation under alpine sedge and forb turf soils were classified as Typic Cryumbrepts. Soils above 4600 m elevation showed evidence of cryogenic soil structures (platy and fine subangular blocky) presumably formed as the result of extended periods (more than 300 days per year) of freezing and thawing and vein ice formation. Although permafrost may be expected to occur at depth at these elevations, no permafrost was observed within 2 m of the soil surface within the elevational range sampled. Copyright 1999 John Wiley & Sons, Ltd.
收录类别	SCI
WOS关键词	TIBET
WOS研究方向	Physical Geography ; Geology
WOS类目	Geography, Physical ; Geology
语种	英语
出版者	JOHN WILEY & SONS LTD
WOS记录号	WOS:000084045600002
内容类型	期刊论文
URI标识	http://www.corc.org.cn/handle/1471x/2559104
专题	南京土壤研究所
通讯作者	Smith, CAS
作者单位	1.Agr & Agri Food Canada, Summerland, BC V0H 1Z0, Canada 2.Nat Resources Conservat Serv, Wasilla, AK 99654 USA 3.Univ Munster, Inst Landscape Ecol, D-48149 Munster, Germany 4.Univ Alaska, Palmer Res Ctr, Palmer, AK 99645 USA 5.USDA, Nat Resources Conservat Serv, Natl Soil Survey Lab, Lincoln, NE 68508 USA 6.Chinese Acad Sci, Inst Soil Sci, Nanjing 210008, Peoples R China
推荐引用方式 GB/T 7714	Smith, CAS,Clark, M,Broll, G,et al. Characterization of selected soils from the Lhasa region of Qinghai-Xizang Plateau, SW China[J]. PERMAFROST AND PERIGLACIAL PROCESSES,1999,10(3):211-222.
APA	Smith, CAS,Clark, M,Broll, G,Ping, CL,Kimble, JM,&Luo, G.(1999).Characterization of selected soils from the Lhasa region of Qinghai-Xizang Plateau, SW China.PERMAFROST AND PERIGLACIAL PROCESSES,10(3),211-222.
MLA	Smith, CAS,et al."Characterization of selected soils from the Lhasa region of Qinghai-Xizang Plateau, SW China".PERMAFROST AND PERIGLACIAL PROCESSES 10.3(1999):211-222.

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