Change search
CiteExportLink to record
Permanent link

Direct link
Cite
Citation style
  • apa
  • harvard1
  • ieee
  • modern-language-association-8th-edition
  • vancouver
  • Other style
More styles
Language
  • de-DE
  • en-GB
  • en-US
  • fi-FI
  • nn-NO
  • nn-NB
  • sv-SE
  • Other locale
More languages
Output format
  • html
  • text
  • asciidoc
  • rtf
Drip versus surface irrigation in long term environmental modelling of soil-water-plant exposed to saline water
KTH, School of Architecture and the Built Environment (ABE), Land and Water Resources Engineering (moved 20130630). (Ekosystemteknik)
KTH, School of Architecture and the Built Environment (ABE), Land and Water Resources Engineering (moved 20130630). (Ekosystemteknik)
2012 (English)In: Sustainable Irrigation and Drainage IV: Management, Technologies and Policies, WIT Press, 2012, 87-99 p.Conference paper, Published paper (Refereed)
Abstract [en]

A physically based soil-water storage model with two surface and drip irrigation scenarios in response to saline water was used in the semi-arid Gordonia district in South Africa. The model (CoupModel) consists of several different modules that couples mass and energy flow models with dynamic biotic models of plant and its environment. The simulation period accounted for non-productive water losses, salt accumulation in root zone, and salt transport to below aquifer via deep percolation. The monitoring of biomass production with respect to water consumption and soil osmotic pressure indicted a decline in crop yield due to the water and salt stresses. The drip scenario had a better functionality in terms of the water wastage as the soil evaporation decreased by 40%. However, the productive water consumption decreased by 20% due to insufficient leaching fraction while salt accumulation increased drastically in the entire root zone. We found that salt could be flushed out from the root zone by more leaching but the water wastage increases as well as increasing the possibility of salinization beneath aquifer. The soil-water and plant ecosystem responds differently to salinity in different water management practices. Salt as a source of pollution can either stabilizes the soil by accumulation in the root zone causing anthropogenic soil desertification or can percolate it to beneath the aquifer resulting to long-term salinization. The findings of our study could sever to improve different management schemes in similar semi-arid regions.

Place, publisher, year, edition, pages
WIT Press, 2012. 87-99 p.
Series
WIT Transactions on Ecology and the Environment, ISSN 1743-3541 ; 168
Keyword [en]
Chloride balance, Coupmodel, Drip and surface irrigation, Soil evaporation, Soil-water-plant modelling, Transpiration, Water balance
National Category
Other Environmental Engineering
Identifiers
URN: urn:nbn:se:kth:diva-116650DOI: 10.2495/SI120081Scopus ID: 2-s2.0-84871216036ISBN: 978-184564648-6 (print)OAI: oai:DiVA.org:kth-116650DiVA: diva2:600038
Conference
4th International Conference on Sustainable Irrigation and Drainage: Management, Technologies And Policies, SI 2012, 11 December 2012 through 13 December 2012, Adelaide
Note

QC 20130123

Available from: 2013-01-23 Created: 2013-01-22 Last updated: 2013-09-06Bibliographically approved

Open Access in DiVA

No full text

Other links

Publisher's full textScopus

Search in DiVA

By author/editor
Pourfathali Kasmaei, LeilaJansson, Per-Erik
By organisation
Land and Water Resources Engineering (moved 20130630)
Other Environmental Engineering

Search outside of DiVA

GoogleGoogle Scholar

doi
isbn
urn-nbn

Altmetric score

doi
isbn
urn-nbn
Total: 101 hits
CiteExportLink to record
Permanent link

Direct link
Cite
Citation style
  • apa
  • harvard1
  • ieee
  • modern-language-association-8th-edition
  • vancouver
  • Other style
More styles
Language
  • de-DE
  • en-GB
  • en-US
  • fi-FI
  • nn-NO
  • nn-NB
  • sv-SE
  • Other locale
More languages
Output format
  • html
  • text
  • asciidoc
  • rtf