气候变化领域集成服务门户(CCPortal): A mechanistic investigation of the oasis effect in the Zhangye cropland in semiarid western China

CCPortal

DOI	10.1016/j.jaridenv.2020.104120
	A mechanistic investigation of the oasis effect in the Zhangye cropland in semiarid western China
	Ruehr, Sophie; Lee, Xuhui; Smith, Ronald; Li, Xin; Xu, Ziwei; Liu, Shaomin; Yang, Xiaofan; Zhou, Yanzhao
通讯作者	Ruehr, S (通讯作者)
发表日期	2020
ISSN	0140-1963
EISSN	1095-922X
卷号	176
英文摘要	Providing mechanistic explanations for oasis cold island effect trends expands current understanding of how land use change affects local climate in semi-arid regions globally. Data from Zhangye, Gansu, China in 2013 were used to evaluate intrinsic biophysical mechanism (IBPM) theory's ability to model the oasis effect. The land-surface temperature oasis effect is observed most intensely in summer afternoon (average difference -12.66 +/- 6.6 K at 13:30 between oasis and desert sites). Observed land-surface temperature oasis effects result from differences in surface albedo, Bowen ratio, soil heat flux and air temperature. The Bowen ratio change is the strongest predictor of land-surface temperature oasis effect, with a nearly 1:1 relationship to the observed land-surface oasis effect in summer (R-2 = 0.6). The IBPM theory accurately predicts oasis effects for 66% of summer daylight hours, with an average RSME of 4.72 K. Correlation analysis is performed to evaluate the impacts of meteorological conditions on observed oasis effects, showing that higher windspeed and greater atmospheric clarity produce stronger land-surface temperature oasis effects. In summer, this relationship is strongest, with an R-2 value of 0.65 and RSME of 3.77. This research has implications for evaluating temperature impacts of land use change in semi-arid regions globally.
关键词	ENERGY-BALANCE CLOSURE SURFACE-TEMPERATURE LAND-COVER CLIMATE IMPACTS ISLAND BASIN SEA
英文关键词	Oasis-desert system; Energy balance; Intrinsic biophysical mechanism (IBPM); Semi-arid region
语种	英语
WOS研究方向	Environmental Sciences & Ecology
WOS类目	Ecology ; Environmental Sciences
WOS记录号	WOS:000517850300006
来源期刊	JOURNAL OF ARID ENVIRONMENTS
来源机构	中国科学院青藏高原研究所
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/259793
推荐引用方式 GB/T 7714	Ruehr, Sophie,Lee, Xuhui,Smith, Ronald,et al. A mechanistic investigation of the oasis effect in the Zhangye cropland in semiarid western China[J]. 中国科学院青藏高原研究所,2020,176.
APA	Ruehr, Sophie.,Lee, Xuhui.,Smith, Ronald.,Li, Xin.,Xu, Ziwei.,...&Zhou, Yanzhao.(2020).A mechanistic investigation of the oasis effect in the Zhangye cropland in semiarid western China.JOURNAL OF ARID ENVIRONMENTS,176.
MLA	Ruehr, Sophie,et al."A mechanistic investigation of the oasis effect in the Zhangye cropland in semiarid western China".JOURNAL OF ARID ENVIRONMENTS 176(2020).