干旱区生态环境知识资源中心(Arid): A comprehensive analysis of water productivity in natural vegetation and various crops coexistent agro-ecosystems

Arid

DOI	10.1016/j.agwat.2020.106481
	A comprehensive analysis of water productivity in natural vegetation and various crops coexistent agro-ecosystems
	Ren, Dongyang; Xu, Xu; Engel, Bernard; Huang, Quanzhong; Xiong, Yunwu; Huo, Zailin; Huang, Guanhua
通讯作者	Huang, GH (corresponding author), China Agr Univ, Chinese Israeli Int Ctr Res & Training Agr, Beijing 100083, Peoples R China.
来源期刊	AGRICULTURAL WATER MANAGEMENT
ISSN	0378-3774
EISSN	1873-2283
出版年	2021
卷号	243
英文摘要	Water productivity (WP) expressed as the yield produced per unit volume of water is an important indicator of water use in arid and semi-arid areas. Due to complex plant cover and hydrological processes, the quantification and assessment of WP are usually difficult to determine, especially at the regional scale. In this study, an arid irrigated agro-ecosystem in the upper Yellow River basin was selected as a case study area. Based on field observation and model simulation results, the WP of irrigation water (WPI), water applied (WP(I+P)) and evapotranspiration (WPET) were calculated. Equivalent water productivity (EWP) of irrigation water (EWPI), water applied (EWP(I+P)) and evapotranspiration (EWPET) were proposed and calculated to unify the disparate WP for various crops and natural vegetation. Results showed WPI and WP(I+P) decreased with the increase of water application for all plants except watermelon, indicating supplemental irrigation to watermelon is urgent to improve its production and WP(I+P). The spatially averaged WPET (kg m(-3)) was 2.47 for maize, 0.80 for sunflower, 12.3 for watermelon, 1.39 for wheat and 0.65 for natural vegetation. WPET for natural vegetation was usually lower in this salt stressed area compared with other water stressed areas. The EWP revealed the rank order of WP for different crops and natural vegetation: watermelon > wheat > maize > sunflower for EWPI; natural vegetation > wheat > watermelon > maize > sunflower for EWP(I+P); and wheat > sunflower > watermelon > maize > natural vegetation for EWPET. The relationship between EWP(I+P) and EWPET was scale dependent due to the water reuse phenomena among different land cover types and the canals through the shallow groundwater system. Ignoring natural vegetation will result in considerable bias in the estimation of the regional scale water productivity (16 % in this study). WP improvement strategies such as transferring irrigation water from less productive (sunflower) areas to productive (vegetable and natural vegetation) areas, reducing bare soil evaporation and constructing a timely and accurate irrigation-drainage system were provided.
英文关键词	Equivalent water productivity Water reuse Model simulation Field scale Regional scale
类型	Article
语种	英语
收录类别	SCI-E
WOS记录号	WOS:000594655200006
WOS关键词	HETAO IRRIGATION DISTRICT ; USE EFFICIENCY ; DRIP IRRIGATION ; AGRICULTURAL WATER ; SHALLOW GROUNDWATER ; DEFICIT IRRIGATION ; SOIL-SALINITY ; WHEAT YIELD ; QUALITY ; SUNFLOWER
WOS类目	Agronomy ; Water Resources
WOS研究方向	Agriculture ; Water Resources
来源机构	中国农业大学
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/347663
作者单位	[Ren, Dongyang; Xu, Xu; Huang, Quanzhong; Xiong, Yunwu; Huang, Guanhua] China Agr Univ, Chinese Israeli Int Ctr Res & Training Agr, Beijing 100083, Peoples R China; [Ren, Dongyang; Xu, Xu; Huang, Quanzhong; Xiong, Yunwu; Huo, Zailin; Huang, Guanhua] China Agr Univ, Ctr Agr Water Res, Beijing 100083, Peoples R China; [Ren, Dongyang; Engel, Bernard] Purdue Univ, Agr & Biol Engn, 225 South Univ St, W Lafayette, IN 47907 USA
推荐引用方式 GB/T 7714	Ren, Dongyang,Xu, Xu,Engel, Bernard,et al. A comprehensive analysis of water productivity in natural vegetation and various crops coexistent agro-ecosystems[J]. 中国农业大学,2021,243.
APA	Ren, Dongyang.,Xu, Xu.,Engel, Bernard.,Huang, Quanzhong.,Xiong, Yunwu.,...&Huang, Guanhua.(2021).A comprehensive analysis of water productivity in natural vegetation and various crops coexistent agro-ecosystems.AGRICULTURAL WATER MANAGEMENT,243.
MLA	Ren, Dongyang,et al."A comprehensive analysis of water productivity in natural vegetation and various crops coexistent agro-ecosystems".AGRICULTURAL WATER MANAGEMENT 243(2021).