Simulation of linear and non-linear soil water deficit due to tree water uptake

The simulation of water uptake model is extremely important to anticipate the moisture content changes in the soil. It is very helpful to the development of geotechnical foundation and geo-environmental problem. There are some water uptake models have been developed by other researchers. However it...

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Main Author:	Ong, Choon Kian
Format:	Thesis
Language:	English
Published:	2014
Subjects:	TA Engineering (General) Civil engineering (General)
Online Access:	http://eprints.utm.my/id/eprint/48925/25/OngChoonKianMKFA2014.pdf
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id	my-utm-ep.48925
record_format	uketd_dc
spelling	my-utm-ep.489252020-07-08T01:35:17Z Simulation of linear and non-linear soil water deficit due to tree water uptake 2014-08 Ong, Choon Kian TA Engineering (General). Civil engineering (General) The simulation of water uptake model is extremely important to anticipate the moisture content changes in the soil. It is very helpful to the development of geotechnical foundation and geo-environmental problem. There are some water uptake models have been developed by other researchers. However it is lack of software programme to plot and analyse the model. Hence, this project focuses into the development of coding for linear and non-linear water uptake model. Prasad linear model and Li et al. exponential model was simulated by using Visual Basic 6.0. The result was verified and showed a good match with the model. The exponential model also compared with CERES model. The sensitivity of linear and exponential model was investigated and also the comparison between both simulated models. The results show that the total water extraction of linear model does not affected by rooting depth but very sensitive to potential transpiration. For exponential model, the increment of total water extraction is constant with the same increment of potential transpiration. Total water extraction of linear model is lower compare to exponential model. Besides, the extinction coefficient, b shows the least effect to the total water extraction. This value of 0.15/cm and higher shows that the rate of extraction is almost zero when deeper than or equal to 60% of rooting depth. 2014-08 Thesis http://eprints.utm.my/id/eprint/48925/ http://eprints.utm.my/id/eprint/48925/25/OngChoonKianMKFA2014.pdf application/pdf en public http://dms.library.utm.my:8080/vital/access/manager/Repository/vital:85544 masters Universiti Teknologi Malaysia, Faculty of Civil Engineering Faculty of Civil Engineering
institution	Universiti Teknologi Malaysia
collection	UTM Institutional Repository
language	English
topic	TA Engineering (General) Civil engineering (General)
spellingShingle	TA Engineering (General) Civil engineering (General) Ong, Choon Kian Simulation of linear and non-linear soil water deficit due to tree water uptake
description	The simulation of water uptake model is extremely important to anticipate the moisture content changes in the soil. It is very helpful to the development of geotechnical foundation and geo-environmental problem. There are some water uptake models have been developed by other researchers. However it is lack of software programme to plot and analyse the model. Hence, this project focuses into the development of coding for linear and non-linear water uptake model. Prasad linear model and Li et al. exponential model was simulated by using Visual Basic 6.0. The result was verified and showed a good match with the model. The exponential model also compared with CERES model. The sensitivity of linear and exponential model was investigated and also the comparison between both simulated models. The results show that the total water extraction of linear model does not affected by rooting depth but very sensitive to potential transpiration. For exponential model, the increment of total water extraction is constant with the same increment of potential transpiration. Total water extraction of linear model is lower compare to exponential model. Besides, the extinction coefficient, b shows the least effect to the total water extraction. This value of 0.15/cm and higher shows that the rate of extraction is almost zero when deeper than or equal to 60% of rooting depth.
format	Thesis
qualification_level	Master's degree
author	Ong, Choon Kian
author_facet	Ong, Choon Kian
author_sort	Ong, Choon Kian
title	Simulation of linear and non-linear soil water deficit due to tree water uptake
title_short	Simulation of linear and non-linear soil water deficit due to tree water uptake
title_full	Simulation of linear and non-linear soil water deficit due to tree water uptake
title_fullStr	Simulation of linear and non-linear soil water deficit due to tree water uptake
title_full_unstemmed	Simulation of linear and non-linear soil water deficit due to tree water uptake
title_sort	simulation of linear and non-linear soil water deficit due to tree water uptake
granting_institution	Universiti Teknologi Malaysia, Faculty of Civil Engineering
granting_department	Faculty of Civil Engineering
publishDate	2014
url	http://eprints.utm.my/id/eprint/48925/25/OngChoonKianMKFA2014.pdf
_version_	1747817504092192768

Simulation of linear and non-linear soil water deficit due to tree water uptake

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