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	Annual variations in the surface radiation budget and soil water and heat content in the Upper Yellow River area
	Li, Suosuo1,2; Lue, Shihua2; Ao, Yinhuan2; Shang, Lunyu2
刊名	ENVIRONMENTAL GEOLOGY
	2009-03-01
卷号	57期号:2页码:389-395
关键词	Radiation budget Soil temperature gradient Soil thermal conductivity Soil water and heat content Upper Yellow River area
ISSN号	0943-0105
DOI	10.1007/s00254-008-1308-y
通讯作者	Li, Suosuo(liss@lzb.ac.cn)
英文摘要	Measurements taken between July 2006 to May 2007 at the Maqu station in the Upper Yellow River area were used to study the surface radiation budget and soil water and heat content in this area. These data revealed distinct seasonal variations in downward shortwave radiation, downward longwave radiation, upward longwave radiation and net radiation, with larger values in the summer than in winter because of solar altitudinal angle. The upward shortwave radiation factor is not obvious because of albedo (or snow). Surface albedo in the summer was lower than in the winter and was directly associated with soil moisture and solar altitudinal angle. The annual averaged albedo was 0.26. Soil heat flux, soil temperature and soil water content changed substantially with time and depth. The soil temperature gradient was positive from August to February and was related to the surface net radiation and the heat condition of the soil itself. There was a negative correlation between soil temperature gradient and net radiation, and the correlation coefficient achieved a significance level of 0.01. Because of frozen state of the soil, the maximum soil thermal conductivity value was 1.21 W m(-1)A degrees C(-1) in January 2007. In May 2007, soil thermal conductivity was 0.23 W m(-1)A degrees C(-1), which is the lowest value measured in the study, likely due to the fact that the soil was drier then than in other months. The soil thermal conductivity values for the four seasons were 0.27, 0.38, 0.55 and 0.83 W m(-1)A degrees C(-1), respectively.
收录类别	SCI ; ISTP
WOS关键词	DESERT ; CHINA
WOS研究方向	Environmental Sciences & Ecology ; Geology ; Water Resources
WOS类目	Environmental Sciences ; Geosciences, Multidisciplinary ; Water Resources
语种	英语
出版者	SPRINGER
WOS记录号	WOS:000263361600016
内容类型	期刊论文
URI标识	http://www.corc.org.cn/handle/1471x/2556164
专题	寒区旱区环境与工程研究所
通讯作者	Li, Suosuo
作者单位	1.China Meteorol Adm, Inst Arid Meteorol, Gansu Prov & Key Lab Arid Climat Change & Reduct, Key Lab Arid Climat Change & Reduct Disaster, Lanzhou 730020, Gansu, Peoples R China 2.Chinese Acad Sci, Cold & Arid Reg Environm & Engn Res Inst, Lab Climate Environm & Disasters Western China, Lanzhou 730000, Gansu, Peoples R China
推荐引用方式 GB/T 7714	Li, Suosuo,Lue, Shihua,Ao, Yinhuan,et al. Annual variations in the surface radiation budget and soil water and heat content in the Upper Yellow River area[J]. ENVIRONMENTAL GEOLOGY,2009,57(2):389-395.
APA	Li, Suosuo,Lue, Shihua,Ao, Yinhuan,&Shang, Lunyu.(2009).Annual variations in the surface radiation budget and soil water and heat content in the Upper Yellow River area.ENVIRONMENTAL GEOLOGY,57(2),389-395.
MLA	Li, Suosuo,et al."Annual variations in the surface radiation budget and soil water and heat content in the Upper Yellow River area".ENVIRONMENTAL GEOLOGY 57.2(2009):389-395.

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