干旱区生态环境知识资源中心(Arid): A novel water use efficiency model based on stomata coupling crop growth and farmland water cycle processes in arid area

Arid

DOI	10.1016/j.jhydrol.2022.128974
	A novel water use efficiency model based on stomata coupling crop growth and farmland water cycle processes in arid area
	Wang, Weishu; Huo, Zailin; Rong, Yao; Wang, Chaozi; Zhang, Chenglong; Wang, Xingwang
通讯作者	Huo, ZL
来源期刊	JOURNAL OF HYDROLOGY
ISSN	0022-1694
EISSN	1879-2707
出版年	2023
卷号	617
英文摘要	Water use efficiency (WUE) determined by water-carbon coupling process is important to evaluate the rela-tionship between crop growth and water consumption. Aiming to provide a novel WUE dynamic evaluating method at field scale, we developed a crop WUE model based on stomata, which coupled the processes of crop growth and farmland water cycle. In previous work, we developed a stomatal conductance model in which crop stomatal conductance could be described by its relationship to meteorological factors, soil water and salinity. In this study, we coupled crop transpiration and photosynthesis based on stomata. Furthermore, the model described the daily crop growth and hydrological processes. As a result, the developed model could simulate the dynamic changes of crop canopy evapotranspiration (ET), canopy photosynthesis, dry matter accumulation and assimilation distribution, soil water movement, soil salt transport and WUE of farmland ecosystems on a daily scale. Three years field experimental data were used to calibrate the developed model. The results showed that the model could simulate the variation of agricultural hydrology processes properly in sunflower field on the daily scale, with determination coefficient (R-2) and Nash-Sutcliffe efficiency coefficient (NSE) of ET, transpira-tion and WUE all close to 0.60. R2 and NSE of net ecosystem productivity above 0.74 and 0.68, respectively. And the coupling model had a good performance in simulating the dynamic change process of soil moisture and salt with the R-2 and NSE above 0.71 and 0.61, respectively. Sensitivity analysis of model parameters showed that the selection of the extinction coefficient had a great influence on the accuracy of the model and the accurate description of soil resistance parameters played a crucial role in the accurate quantification of ET. The developed field WUE model can provide novel method to evaluate daily hydrological processes, agricultural productivity and WUE dynamics.
英文关键词	Farmland Stomata Transpiration Photosynthesis Water use efficiency Coupling model
类型	Article
语种	英语
收录类别	SCI-E
WOS记录号	WOS:000906822200001
WOS关键词	CANOPY CONDUCTANCE ; AVAILABLE ENERGY ; FOOTPRINT MODEL ; GAS-EXCHANGE ; 2-LEAF MODEL ; BARE SOIL ; PHOTOSYNTHESIS ; EVAPORATION ; EVAPOTRANSPIRATION ; CO2
WOS类目	Engineering, Civil ; Geosciences, Multidisciplinary ; Water Resources
WOS研究方向	Engineering ; Geology ; Water Resources
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/397387
推荐引用方式 GB/T 7714	Wang, Weishu,Huo, Zailin,Rong, Yao,et al. A novel water use efficiency model based on stomata coupling crop growth and farmland water cycle processes in arid area[J],2023,617.
APA	Wang, Weishu,Huo, Zailin,Rong, Yao,Wang, Chaozi,Zhang, Chenglong,&Wang, Xingwang.(2023).A novel water use efficiency model based on stomata coupling crop growth and farmland water cycle processes in arid area.JOURNAL OF HYDROLOGY,617.
MLA	Wang, Weishu,et al."A novel water use efficiency model based on stomata coupling crop growth and farmland water cycle processes in arid area".JOURNAL OF HYDROLOGY 617(2023).