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	Impact of soil moisture and winter wheat height from the Loess Plateau in Northwest China on surface spectral albedo
	Li, Zhenchao1,2; Yang, Jiaxi1; Gao, Xiaoqing1; Zheng, Zhiyuan3; Yu, Ye1,2; Hou, Xuhong1; Wei, Zhigang3
刊名	THEORETICAL AND APPLIED CLIMATOLOGY
	2018-02-01
卷号	131期号:3-4页码:857-864
ISSN号	0177-798X
DOI	10.1007/s00704-016-2017-1
通讯作者	Wei, Zhigang(wzg@bnu.edu.cn)
英文摘要	The understanding of surface spectral radiation and reflected radiation characteristics of different surfaces in different climate zones aids in the interpretation of regional surface energy transfers and the development of land surface models. This study analysed surface spectral radiation variations and corresponding surface albedo characteristics at different wavelengths as well as the relationship between 5-cm soil moisture and surface albedo on typical sunny days during the winter wheat growth period. The analysis was conducted using observational Loess Plateau winter wheat data from 2015. The results show that the ratio of atmospheric downward radiation to global radiation on typical sunny days is highest for near-infrared wavelengths, followed by visible wavelengths and ultraviolet wavelengths, with values of 57.3, 38.7 and 4.0%, respectively. The ratio of reflected spectral radiation to global radiation varies based on land surface type. The visible radiation reflected by vegetated surfaces is far less than that reflected by bare ground, with surface albedos of 0.045 and 0.27, respectively. Thus, vegetated surfaces absorb more visible radiation than bare ground. The atmospheric downward spectral radiation to global radiation diurnal variation ratios vary for near-infrared wavelengths versus visible and ultraviolet wavelengths on typical sunny days. The near-infrared wavelengths ratio is higher in the morning and evening and lower at noon. The visible and ultraviolet wavelengths ratios are lower in the morning and evening and higher at noon. Visible and ultraviolet wavelength surface albedo is affected by 5-cm soil moisture, demonstrating a significant negative correlation. Excluding near-infrared wavelengths, correlations between surface albedo and 5-cm soil moisture pass the 99% confidence test at each wavelength. The correlation with 5-cm soil moisture is more significant at shorter wavelengths. However, this study obtained surface spectral radiation characteristics that were affected by land surface vegetation coverage as well as by soil physical properties.
收录类别	SCI
WOS关键词	THERMAL PARAMETERS ; WATER ; VARIABILITY ; RADIATION ; EXCHANGE ; DYNAMICS ; CLIMATE ; SCHEME ; FOREST ; ENERGY
WOS研究方向	Meteorology & Atmospheric Sciences
WOS类目	Meteorology & Atmospheric Sciences
语种	英语
出版者	SPRINGER WIEN
WOS记录号	WOS:000423574800001
内容类型	期刊论文
URI标识	http://www.corc.org.cn/handle/1471x/2558083
专题	寒区旱区环境与工程研究所
通讯作者	Wei, Zhigang
作者单位	1.Chinese Acad Sci, Key Lab Land Surface Proc & Climate Change Cold &, Cold & Arid Reg Environm & Engn Res Inst, Lanzhou, Gansu, Peoples R China 2.Chinese Acad Sci, Pingliang Land Surface Proc & Severe Weather Res, Pingliang, Gansu, Peoples R China 3.Beijing Normal Univ, State Key Lab Earth Surface Proc & Resource Ecol, Beijing, Peoples R China
推荐引用方式 GB/T 7714	Li, Zhenchao,Yang, Jiaxi,Gao, Xiaoqing,et al. Impact of soil moisture and winter wheat height from the Loess Plateau in Northwest China on surface spectral albedo[J]. THEORETICAL AND APPLIED CLIMATOLOGY,2018,131(3-4):857-864.
APA	Li, Zhenchao.,Yang, Jiaxi.,Gao, Xiaoqing.,Zheng, Zhiyuan.,Yu, Ye.,...&Wei, Zhigang.(2018).Impact of soil moisture and winter wheat height from the Loess Plateau in Northwest China on surface spectral albedo.THEORETICAL AND APPLIED CLIMATOLOGY,131(3-4),857-864.
MLA	Li, Zhenchao,et al."Impact of soil moisture and winter wheat height from the Loess Plateau in Northwest China on surface spectral albedo".THEORETICAL AND APPLIED CLIMATOLOGY 131.3-4(2018):857-864.

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