MODELLING THE IMPACT OF CLIMATE CHANGE ON GROUNDWATER RESOURCES IN CENTRAL PUNJAB
| dc.contributor.author | samanpreet kaur | |
| dc.date.accessioned | 2017-07-24T12:24:52Z | |
| dc.date.available | 2017-07-24T12:24:52Z | |
| dc.date.issued | 2013 | |
| dc.description.abstract | A study was planned to assess the impacts of climate change on groundwater resources in Ludhiana district under PRECIS A1B climate change scenario by linking the outputs of climate, soil-water-vegetation and groundwater models using GIS. Bias correction of climate data was done by correction functions, developed using modified difference, approach at daily time scale for rainfall and at monthly time scale for Tmax and Tmin. The methodology consists of development of simulation zones by overlaying soil, drainage, canal and landuse thematic maps in GIS and estimating water balance components using CropSyst and well defined norms. The groundwater draft for individual simulation zones was computed on the basis of landuse, irrigation requirement and rainfall conditions. The spatial distribution of recharge and groundwater draft was mapped to GIS and was provided as input to groundwater model. The results showed that temperature and rainfall would be increased by 2.4°C, 315 mm in MC (2021-2050); and 5.1°C and 465 mm in EC (2071-2098), respectively. During kharif season increase in RF would be 28.0% in MC and 52.0% in EC compared to that in PTS (1971-2010). The corresponding values during rabi would be 82.3% and 88.6%, respectively. As a consequence of increased precipitation, the irrigation requirements in MC and EC would decrease by 46% and 45% during kharif; and 21% and 34% in rabi, respectively. However, the potential groundwater recharge would be reduced by 23.1 and 4.2 per cent in kharif, and increased by 39.1 and 79.6 per cent in rabi during MC and EC, respectively. The average groundwater levels would decrease by 2.2 m in 2050 and increase by 4.8 m in 2098, compared to base year of June 2000. The results presented here should be interpreted as trends and not as accurate quantitative predictions of the hydrological changes as there are numerous sources of uncertainties associated with climate change prediction. Keywords: Climate change, Groundwater, MODFLOW, CropSyst, Geographical information system | en_US |
| dc.identifier.uri | http://krishikosh.egranth.ac.in/handle/1/5810026074 | |
| dc.language.iso | en | en_US |
| dc.sub | Soil and Water Engineering | en_US |
| dc.subject | null | en_US |
| dc.these.type | M.Sc | en_US |
| dc.title | MODELLING THE IMPACT OF CLIMATE CHANGE ON GROUNDWATER RESOURCES IN CENTRAL PUNJAB | en_US |
| dc.type | Thesis | en_US |