Land Use Change and Temperature Trends Over the Canadian Agricultural Regions

Monday, 15 December 2014
Lorna Raja Nayagam1, Raymond L Desjardins2, Devon L Worth2 and Darrel Cerkowniak2, (1)Self Employed,, Pathanamthitta, India, (2)Eastern Cereal and Oilseed Research Center, Agriculture and Agri-Food Canada, Ottawa, ON, Canada
The present study deals with the land use change and trends in temperature over the agricultural ecodisticts of Canada during the growing season (June-July) of 1951-2006 period using the ecodistrict climate database for canada compiled from station data by Xu et. al. The trend analysis on maximum, minimum Temperatures and Diurnal temperature range has been carried out using the Mann Kendall trend test and the slope is estimated using the Sen’s Slope estimator. Ecodistricts that exhibit 95% significant trends are only presented. The results show an increase in maximum and minimum temperatures in June and June-July months respectively, whereas a decrease in diurnal temperature range has been noticed during the growing season. As a large land area of summerfallow has been converted to agricultural regions its effect on the climate variables was also analysed. Results show that the temperature trends are affected by the land use change over the region.