气候变化领域集成服务门户(CCPortal): Modelling plant canopy effects on annual variability of evapotranspiration and heat fluxes for a semi-arid grassland on the southern periphery of the Eurasian cryosphere in Mongolia

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DOI	10.1002/hyp.7885
	Modelling plant canopy effects on annual variability of evapotranspiration and heat fluxes for a semi-arid grassland on the southern periphery of the Eurasian cryosphere in Mongolia
	Zhang, Yinsheng; Ohata, T.; Zhou, J.; Davaa, G.
通讯作者	Zhang, YS (通讯作者)
发表日期	2011
ISSN	0885-6087
EISSN	1099-1085
起始页码	1201
结束页码	1211
卷号	25 期号:8
英文摘要	The ability to predict vegetation cover effects on thermal/water regimes can enhance our understanding of canopy controls on evapotranspiration. The Simultaneous Heat and Water (SHAW) model is a detailed process model of heat and water movement in a snow-residue-soil system. This paper describes provisions added to the SHAW model for vegetation cover and simulation of heat and water transfer through the soil-plant-air continuum. The model was applied to four full years (May 2003-April 2007) of data collected on sparse grassland at Nalaikh in north-eastern Mongolia. Simulated soil temperature and radiation components agreed reasonably well with measured values. The absolute differences between simulated and measured soil temperatures were larger at both the surface layer and deeper layer, but relatively smaller in the layer from 0.8 to 2.4 m. Radiation components were mimicked by the SHAW model with model efficiency (ME) reaching 0.93-0.72. Latent and sensible heat fluxes were simulated well with MEs of 0.93 and 0.87, respectively. The vegetation control on evapotranspiration was investigated by sensitivity experiments of model performance with changing leaf area index (LAI) values but constant of other variables. The results suggest that annual evapotranspiration ranged from 16 to -22% in response to extremes of doubled and zero LAI. Copyright (C) 2010 John Wiley & Sons, Ltd.
关键词	ENERGY FLUXES SOIL WATER SIMULATION VEGETATION TEMPERATURE TURBULENCE NITROGEN BALANCE GROWTH
英文关键词	evapotranspiration; Mongolia; semi-arid grassland; SHAW model
语种	英语
WOS研究方向	Water Resources
WOS类目	Water Resources
WOS记录号	WOS:000289425700001
来源期刊	HYDROLOGICAL PROCESSES
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/257923
推荐引用方式 GB/T 7714	Zhang, Yinsheng,Ohata, T.,Zhou, J.,et al. Modelling plant canopy effects on annual variability of evapotranspiration and heat fluxes for a semi-arid grassland on the southern periphery of the Eurasian cryosphere in Mongolia[J]. 中国科学院青藏高原研究所,2011,25(8).
APA	Zhang, Yinsheng,Ohata, T.,Zhou, J.,&Davaa, G..(2011).Modelling plant canopy effects on annual variability of evapotranspiration and heat fluxes for a semi-arid grassland on the southern periphery of the Eurasian cryosphere in Mongolia.HYDROLOGICAL PROCESSES,25(8).
MLA	Zhang, Yinsheng,et al."Modelling plant canopy effects on annual variability of evapotranspiration and heat fluxes for a semi-arid grassland on the southern periphery of the Eurasian cryosphere in Mongolia".HYDROLOGICAL PROCESSES 25.8(2011).