Modelling the effect of climate change on irrigation requirements of rice-wheat system in central Punjab

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dc.contributor.advisorAggarwal, Rajan
dc.contributor.authorDin Dar, Mehraj U
dc.date.accessioned2016-10-13T17:41:15Z
dc.date.available2016-10-13T17:41:15Z
dc.date.issued2016
dc.description.abstractClimate change poses significant threats to global food security and water resources. In present study, the crop simulation model (DSSAT V 4.6.1) was applied to assess the effect of climate change on water balance components, especially irrigation requirements and yield behavior of rice- wheat system in Ludhiana district under HAD GEM2-ES RCPs 4.5 and 8.5. Bias correction of climate data was done by correction functions, developed using linear scaling method at monthly time scale for rainfall, Tmax and Tmin. The simulation spanned 46 years of baseline (1970-2015) as well as two future periods’ mid-century (MC) (2020-2050) and end century EC (2060-2090). The results showed that the temperature would increase by 1.56 °C and rainfall would decrease by 98 mm in MC (2020-2050); and 3.11°C and 90 mm in EC (2060-2090), respectively under RCP 4.5. In RCP 8.5 the increase in temperature and rainfall was 2.75°C and153 mm, respectively in MC and the corresponding values in EC was 5.46°C and 251 mm, respectively. As a consequence of this the irrigation requirements in MC and EC decreased by 8.6% and 7.4% in rice crop and increased by 24.4% and 43.1% in wheat crop respectively under RCP 4.5. But in RCP 8.5 the irrigation requirements for rice crop decreased by 13.73% and 12.7% in MC and EC, respectively and in wheat crop it increased to 27.14% and 30.69% in MC and EC, respectively. These findings may provide a useful insight into the potential effects of climate change on irrigation requirements and yield in Ludhiana district.en_US
dc.identifier.urihttp://krishikosh.egranth.ac.in/handle/1/80529
dc.language.isoenen_US
dc.publisherPunjab Agricultural University, Ludhianaen_US
dc.subSoil and Water Engineering
dc.subjectrice-wheat systemen_US
dc.subjectCivil Engineeringen_US
dc.subjectirrigation requirementsen_US
dc.subjectclimate changeen_US
dc.subjectDSSATen_US
dc.these.typeM.Tech
dc.titleModelling the effect of climate change on irrigation requirements of rice-wheat system in central Punjaben_US
dc.typeThesisen_US
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