Responses of Water Fluxes and Water-Use Efficiency of Maize to Warming Based on Water Transformation Dynamical Processes Experimental Device (WTDPED) Experiment

doi:10.3390/w10111660

	Responses of Water Fluxes and Water-Use Efficiency of Maize to Warming Based on Water Transformation Dynamical Processes Experimental Device (WTDPED) Experiment
	Wu, Yali 1,2,3; Ma, Ying 1; Song, Xianfang 1; Yang, Lihu 1; Yang, Shengtian 4
刊名	WATER
	2018-11-01
卷号	10 期号:11 页码:14
关键词	water balance components water use efficiency GSPAC warming maize
ISSN号	2073-4441
DOI	10.3390/w10111660
通讯作者	Song, Xianfang(songxf@igsnrr.ac.cn)
英文摘要	Evaluating the impacts of warming on water balance components in the groundwater-soil-plant-atmosphere continuum (GSPAC) and crop growth are crucial for assessing the risk of water resources and food security under future global warming. A water transformation dynamical processes experimental device (WTDPED) was developed using a chamber coupled with a weighing lysimeter and groundwater supply system, which could simultaneously control both climatic and ground-water level conditions and accurately monitor water fluxes in the GSPAC. Two experiments with maize under increased temperature by 2 degrees C (T-warm) and ambient temperature (T-control) scenarios were conducted via the WTDPED. The duration of growing season decreased from 125 days under T-control to 117 days under 2 degrees C warming. There was little difference of total evapotranspiration (ET) (332.6 mm vs. 332.5 mm), soil water storage change (Delta W) (-119.0 mm vs. -119.0 mm), drainage (D) (-13.6 mm vs. -13.5 mm) between T-control and T-warm experiments. The average daily ET for maize significantly increased by approximately 6.7% (p < 0.05) in the T-warm experiment, especially during the sixth leaf to tasseling-silking stage with an increase of 0.36 mm with respect to the T-control experiment. There were evident decreases in LAI (leaf area index), whereas non-significant decreases in mean stem diameter, crop height and leaf chlorophyll content under T-warm compared to T-control experiment. However, the chlorophyll content increased by 12% during the sixth leaf to tasseling-silking stage under 2 degrees C warming, which accelerated the photosynthesis and transpiration rate. The grain yield and water-use efficiency (WUE) for maize increased by 11.0% and 11.1% in the T-warm experiment, respectively, especially due to enhanced growth during the sixth leaf to tasseling-silking stage. This study provided important references for agricultural planting and water management to adapt to a warming environment.
资助项目	National Natural Science Foundation of China ; China Postdoctoral Science Foundation[41671027] ; China Postdoctoral Science Foundation[41730749] ; China Postdoctoral Science Foundation[1610132018031]
WOS关键词	CLIMATE-CHANGE SCENARIOS ; ZEA-MAYS L. ; PHOTOSYNTHETIC ACCLIMATION ; SOLUTE TRANSPORT ; LARGE LYSIMETER ; CHANGE IMPACTS ; CROP YIELD ; PO VALLEY ; SIMULATION ; BALANCE
WOS研究方向	Water Resources
语种	英语
出版者	MDPI
WOS记录号	WOS:000451736300167
资助机构	National Natural Science Foundation of China ; China Postdoctoral Science Foundation
内容类型	期刊论文
源URL	[http://ir.igsnrr.ac.cn/handle/311030/51472]
专题	中国科学院地理科学与资源研究所
通讯作者	Song, Xianfang
作者单位	1.Chinese Acad Sci, Inst Geog Sci & Nat Resources Res, Key Lab Water Cycle & Related Land Surface Proc, Beijing 100101, Peoples R China 2.Univ Chinese Acad Sci, Coll Resources & Environm, Beijing 100049, Peoples R China 3.Peking Univ, Coll Urban & Environm Sci, Lab Earth Surface Proc, Sinofrance Inst Earth Syst Sci, Beijing 100871, Peoples R China 4.Beijing Normal Univ, Coll Water Sci, Beijing 100875, Peoples R China
推荐引用方式 GB/T 7714	Wu, Yali,Ma, Ying,Song, Xianfang,et al. Responses of Water Fluxes and Water-Use Efficiency of Maize to Warming Based on Water Transformation Dynamical Processes Experimental Device (WTDPED) Experiment[J]. WATER,2018,10(11):14.
APA	Wu, Yali,Ma, Ying,Song, Xianfang,Yang, Lihu,&Yang, Shengtian.(2018).Responses of Water Fluxes and Water-Use Efficiency of Maize to Warming Based on Water Transformation Dynamical Processes Experimental Device (WTDPED) Experiment.WATER,10(11),14.
MLA	Wu, Yali,et al."Responses of Water Fluxes and Water-Use Efficiency of Maize to Warming Based on Water Transformation Dynamical Processes Experimental Device (WTDPED) Experiment".WATER 10.11(2018):14.