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Warming changed seasonal water uptake patterns of summer maize

文献类型：期刊论文

作者Wu, Yali1,3; Ma, Ying4; Niu, Yuan1,3; Song, Xianfang4; Yu, Hui1,3; Lan, Wei1,3; Kang, Xiaoqi2,3
刊名AGRICULTURAL WATER MANAGEMENT
出版日期2021-12-01
卷号258页码:9
关键词Crop water uptake pattern Dual stable isotopes MixSIAR model Warming Summer maize
ISSN号0378-3774
DOI10.1016/j.agwat.2021.107210
通讯作者Niu, Yuan(farniu@163.com) ; Song, Xianfang(songxf@igsnrr.ac.cn)
英文摘要Warming affects tremendously agricultural water cycle though crop evapotranspiration, soil evaporation, crop water uptake pattern etc. Crop water uptake pattern plays an important role on water cycle of the groundwatersoil-plant-atmosphere continuum (GSPAC). A comprehensive assessment of climatic factors, water sources supply dynamics and crop seasonal water uptake pattern under warming is lacking. Here, climatic factors, water sources supply dynamics during the whole growing stages for summer maize under warming 2 degrees C were monitored by a Water Transformation Dynamical Processes Experimental Device (WTDPED). Isotopic labeling experiments by deuterium oxide (2H2O) were conducted to determine seasonal variations in crop water uptake patterns. The contributions of soil water at different depths to water uptake were quantified by the MixSIAR Bayesian mixing model and dual stable isotopes (8D and 818O). Results showed that warming enriched the 8D values in topsoil (10-20 cm) and depleted the 8D values in deep soil (80-270 cm). Warming increased the proportional contributions of soil water at 0-40 cm layer to maize crop uptake by 3.5%, 19.9%, 5.3%, 14.4% and 29.8% during transplanting to maturation stage compared with ambient temperature. It means that deficit irrigation is better applied to reduce root biomass accumulation in the superficial soil layer (0-40 cm) especially at sixth leaf to 12th leaf stage and milk to physiological maturity stage for maize. To some extent, the reduced water infiltration in soil profile offset the increased soil evaporation at 0-80 cm layer under warming. Simultaneously, the maize water uptake for shallow soil layers was greatly induced due to the decrease acclimation of vapor pressure deficit (VPD) especially during tasseling-silking to maturation stage. Smaller water supply and more irrigation times were required for adapting warming condition for summer maize, particularly in water-limited regions. The study gives new perspectives of the effect mechanisms for crop water utilization and agricultural water cycles under future climate change.
WOS关键词STABLE-ISOTOPES ; TRANSPIRATION ; TEMPERATURE ; RESPONSES ; PLANTS ; DEPTH ; WHEAT ; CORN
资助项目Major Science and Tech-nology Program for Water Pollution Control and Treatment of China[2018ZX07208-005] ; National Natural Science Foundation of China[41671027] ; National Natural Science Foundation of China[4210071103]
WOS研究方向Agriculture ; Water Resources
语种英语
WOS记录号WOS:000706995700005
出版者ELSEVIER
资助机构Major Science and Tech-nology Program for Water Pollution Control and Treatment of China ; National Natural Science Foundation of China
源URL[http://ir.igsnrr.ac.cn/handle/311030/167117]  
专题中国科学院地理科学与资源研究所
通讯作者Niu, Yuan; Song, Xianfang
作者单位1.Chinese Res Inst Environm Sci, State Environm Protect Key Lab Lake Pollut Contro, Beijing 100012, Peoples R China
2.Shenyang Agr Univ, Coll Water Conservancy, Shenyang 110866, Peoples R China
3.Chinese Res Inst Environm Sci, Inst Lake Ecol & Environm, Natl Engn Lab Lake Pollut Control & Ecol Restorat, Beijing 100012, Peoples R China
4.Chinese Acad Sci, Inst Geog Sci & Nat Resources Res, Key Lab Water Cycle & Related Land Surface Proc, Beijing 100101, Peoples R China
推荐引用方式
GB/T 7714		 Wu, Yali,Ma, Ying,Niu, Yuan,et al. Warming changed seasonal water uptake patterns of summer maize[J]. AGRICULTURAL WATER MANAGEMENT,2021,258:9.
APA Wu, Yali.,Ma, Ying.,Niu, Yuan.,Song, Xianfang.,Yu, Hui.,...&Kang, Xiaoqi.(2021).Warming changed seasonal water uptake patterns of summer maize.AGRICULTURAL WATER MANAGEMENT,258,9.
MLA Wu, Yali,et al."Warming changed seasonal water uptake patterns of summer maize".AGRICULTURAL WATER MANAGEMENT 258(2021):9.

入库方式： OAI收割

来源：地理科学与资源研究所

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