Estimating the Root Water Uptake of Surface-Irrigated Apples Using Water Stable Isotopes and the Hydrus-1D Model

Estimating the Root Water Uptake of Surface-Irrigated Apples Using Water Stable Isotopes and the Hydrus-1D Model

The future production of irrigated fruit orchards in the Loess Plateau of China is threatened by a shortage of freshwater. To improve water use efficiency under conditions where irrigation is limited, it is necessary to quantify the root water uptake (RWU) of apple trees. The RWU of apple trees was...

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Main Authors: Lijian Zheng, Juanjuan Ma, Xihuan Sun, Xianghong Guo, Qiyun Cheng, Xiaokai Shi
Format: Article
Language:English
Published: MDPI AG 2018-11-01
Series:Water
Subjects:
water use
hydrogen and oxygen
numerical simulation
surface irrigation
apple
root water uptake
Online Access:https://www.mdpi.com/2073-4441/10/11/1624
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spelling doaj-ba773e2adb90475dbbf08758f71c2b4b2020-11-24T22:52:09ZengMDPI AGWater2073-44412018-11-011011162410.3390/w10111624w10111624Estimating the Root Water Uptake of Surface-Irrigated Apples Using Water Stable Isotopes and the Hydrus-1D ModelLijian Zheng0Juanjuan Ma1Xihuan Sun2Xianghong Guo3Qiyun Cheng4Xiaokai Shi5College of Water Resource Science and Engineering, Taiyuan University of Technology, Taiyuan 030024, ChinaCollege of Water Resource Science and Engineering, Taiyuan University of Technology, Taiyuan 030024, ChinaCollege of Water Resource Science and Engineering, Taiyuan University of Technology, Taiyuan 030024, ChinaCollege of Water Resource Science and Engineering, Taiyuan University of Technology, Taiyuan 030024, ChinaCollege of Water Resource Science and Engineering, Taiyuan University of Technology, Taiyuan 030024, ChinaCollege of Water Resource Science and Engineering, Taiyuan University of Technology, Taiyuan 030024, ChinaThe future production of irrigated fruit orchards in the Loess Plateau of China is threatened by a shortage of freshwater. To improve water use efficiency under conditions where irrigation is limited, it is necessary to quantify the root water uptake (RWU) of apple trees. The RWU of apple trees was estimated under surface irrigation using water stable isotope technology and the Hydrus-1D model. Using the Romero-Saltos and IsoSource models, the stable isotopes of water in stems, different soil depths, and different precipitation were analyzed in a 5-year-old dwarfing apple orchard during two seasons 2016 and 2017. Hydrus-1D model was able to simulate the RWU of apple using the maximum coefficient of determination (0.9), providing a root mean square error of 0.019 cm<sup>3</sup> cm<sup>&#8722;3</sup> and a relative error of 2.25%. The results showed that the main depth of RWU ranged from 0&#8315;60 cm during the growth season, with the main contribution occurring in the 0&#8315;40 cm depth. These findings indicated that reducing the traditional surface irrigation depth will be important for improving the irrigation water use efficiency.https://www.mdpi.com/2073-4441/10/11/1624water usehydrogen and oxygennumerical simulationsurface irrigationappleroot water uptake
collection DOAJ
language English
format Article
sources DOAJ
author Lijian Zheng
Juanjuan Ma
Xihuan Sun
Xianghong Guo
Qiyun Cheng
Xiaokai Shi
spellingShingle Lijian Zheng
Juanjuan Ma
Xihuan Sun
Xianghong Guo
Qiyun Cheng
Xiaokai Shi
Estimating the Root Water Uptake of Surface-Irrigated Apples Using Water Stable Isotopes and the Hydrus-1D Model
Water
water use
hydrogen and oxygen
numerical simulation
surface irrigation
apple
root water uptake
author_facet Lijian Zheng
Juanjuan Ma
Xihuan Sun
Xianghong Guo
Qiyun Cheng
Xiaokai Shi
author_sort Lijian Zheng
title Estimating the Root Water Uptake of Surface-Irrigated Apples Using Water Stable Isotopes and the Hydrus-1D Model
title_short Estimating the Root Water Uptake of Surface-Irrigated Apples Using Water Stable Isotopes and the Hydrus-1D Model
title_full Estimating the Root Water Uptake of Surface-Irrigated Apples Using Water Stable Isotopes and the Hydrus-1D Model
title_fullStr Estimating the Root Water Uptake of Surface-Irrigated Apples Using Water Stable Isotopes and the Hydrus-1D Model
title_full_unstemmed Estimating the Root Water Uptake of Surface-Irrigated Apples Using Water Stable Isotopes and the Hydrus-1D Model
title_sort estimating the root water uptake of surface-irrigated apples using water stable isotopes and the hydrus-1d model
publisher MDPI AG
series Water
issn 2073-4441
publishDate 2018-11-01
description The future production of irrigated fruit orchards in the Loess Plateau of China is threatened by a shortage of freshwater. To improve water use efficiency under conditions where irrigation is limited, it is necessary to quantify the root water uptake (RWU) of apple trees. The RWU of apple trees was estimated under surface irrigation using water stable isotope technology and the Hydrus-1D model. Using the Romero-Saltos and IsoSource models, the stable isotopes of water in stems, different soil depths, and different precipitation were analyzed in a 5-year-old dwarfing apple orchard during two seasons 2016 and 2017. Hydrus-1D model was able to simulate the RWU of apple using the maximum coefficient of determination (0.9), providing a root mean square error of 0.019 cm<sup>3</sup> cm<sup>&#8722;3</sup> and a relative error of 2.25%. The results showed that the main depth of RWU ranged from 0&#8315;60 cm during the growth season, with the main contribution occurring in the 0&#8315;40 cm depth. These findings indicated that reducing the traditional surface irrigation depth will be important for improving the irrigation water use efficiency.
topic water use
hydrogen and oxygen
numerical simulation
surface irrigation
apple
root water uptake
url https://www.mdpi.com/2073-4441/10/11/1624
work_keys_str_mv AT lijianzheng estimatingtherootwateruptakeofsurfaceirrigatedapplesusingwaterstableisotopesandthehydrus1dmodel
AT juanjuanma estimatingtherootwateruptakeofsurfaceirrigatedapplesusingwaterstableisotopesandthehydrus1dmodel
AT xihuansun estimatingtherootwateruptakeofsurfaceirrigatedapplesusingwaterstableisotopesandthehydrus1dmodel
AT xianghongguo estimatingtherootwateruptakeofsurfaceirrigatedapplesusingwaterstableisotopesandthehydrus1dmodel
AT qiyuncheng estimatingtherootwateruptakeofsurfaceirrigatedapplesusingwaterstableisotopesandthehydrus1dmodel
AT xiaokaishi estimatingtherootwateruptakeofsurfaceirrigatedapplesusingwaterstableisotopesandthehydrus1dmodel
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