干旱区生态环境知识资源中心(Arid): Prediction of Biome-Specific Potential Evapotranspiration in Mongolia under a Scarcity of Weather Data

Arid

DOI	10.3390/w13182470
	Prediction of Biome-Specific Potential Evapotranspiration in Mongolia under a Scarcity of Weather Data
	Batsukh, Khulan; Zlotnik, Vitaly A.; Suyker, Andrew; Nasta, Paolo
通讯作者	Nasta, P (corresponding author), Univ Naples Federico II, Dept Agr Sci, I-80055 Naples, Italy.
来源期刊	WATER
EISSN	2073-4441
出版年	2021
卷号	13 期号:18
英文摘要	We propose practical guidelines to predict biome-specific potential evapotranspiration (ETp) from the knowledge of grass-reference evapotranspiration (ET0) and a crop coefficient (K-c) in Mongolia. A paucity of land-based weather data hampers use of the Penman-Monteith equation (FAO-56 PM) based on the Food and Agriculture Organization (FAO) guidelines to predict daily ET0. We found that the application of the Hargreaves equation provides ET0 estimates very similar to those from the FAO-56 PM approach. The K-c value is tabulated only for crops in the FAO-56 guidelines but is unavailable for steppe grasslands. Therefore, we proposed a new crop coefficient, K-c adj defined by (a) net solar radiation in the Gobi Desert (K-c adjD) or (b) leaf area index in the steppe region (K-c adjS) in Mongolia. The mean annual ETp obtained using our approach was compared to that obtained by FAO-56 guidelines for forages (not steppe) based on tabulated K-c values in 41 locations in Mongolia. We found the differences are acceptable (RMSE of 0.40 mm d(-1)) in northern Mongolia under high vegetation cover but rather high (RMSE of 1.69 and 2.65 mm d(-1)) in central and southern Mongolia. The FAO aridity index (AI) is empirically related to the ETp/ET0 ratio. Approximately 80% and 54% reduction of ET0 was reported in the Gobi Desert and in the steppe locations, respectively. Our proposed K-c adj can be further improved by considering local weather data and plant phenological characteristics.
英文关键词	Gobi Desert steppe grasslands crop coefficient solar radiation arid climate leaf area index
类型	Article
语种	英语
开放获取类型	gold
收录类别	SCI-E
WOS记录号	WOS:000699840200001
WOS关键词	TEMPERATE DESERT STEPPE ; INNER-MONGOLIA ; PENMAN-MONTEITH ; EVAPORATION ; HARGREAVES ; MODEL ; CROP ; EQUATIONS ; DYNAMICS
WOS类目	Environmental Sciences ; Water Resources
WOS研究方向	Environmental Sciences & Ecology ; Water Resources
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/364845
作者单位	[Batsukh, Khulan; Zlotnik, Vitaly A.] Univ Nebraska Lincoln, Dept Earth & Atmospher Sci, Lincoln, NE 68588 USA; [Suyker, Andrew] Univ Nebraska Lincoln, Sch Nat Resources, Lincoln, NE 68588 USA; [Nasta, Paolo] Univ Naples Federico II, Dept Agr Sci, I-80055 Naples, Italy
推荐引用方式 GB/T 7714	Batsukh, Khulan,Zlotnik, Vitaly A.,Suyker, Andrew,et al. Prediction of Biome-Specific Potential Evapotranspiration in Mongolia under a Scarcity of Weather Data[J],2021,13(18).
APA	Batsukh, Khulan,Zlotnik, Vitaly A.,Suyker, Andrew,&Nasta, Paolo.(2021).Prediction of Biome-Specific Potential Evapotranspiration in Mongolia under a Scarcity of Weather Data.WATER,13(18).
MLA	Batsukh, Khulan,et al."Prediction of Biome-Specific Potential Evapotranspiration in Mongolia under a Scarcity of Weather Data".WATER 13.18(2021).