Climate change evaluation for Ozat basin of Saurashtra region of Gujarat, India
2016
Paradava, D.M. | Rank, H. D. | Kelaiya, J.H. | Trivedi, M.M. | Chinchorkar, SS
The impact of global climate change on crop production has emerged as a major research priority during the past decade. The understanding of the significance of warming shocks on agriculture and spatial unevenness of warming tendency on planet earth had led the present the study on climate change evaluation in Ozat basin (3176.24km²) having four watersheds. The time series of monthly, seasonal and annual average of daily maximum, minimum and mean temperature along with solar radiation (1979–2013) for each of four watersheds and basin were examined separately using Mann-Kendall, Sen's slope and best fit trend line methods. The seasonal and annual series of daily minimum and mean temperature were found significantly increasing in all four watersheds and basin also. The seasonal average of maximum temperature was significantly increasing during winter (0.3o C/decade) and annual (0.1°C/decade). However, the seasonal average of daily minimum and mean temperature were found increased significantly at 0.3, 0.3, 0.2 and 0.3°C/decade and 0.3, 0.2, 0.1 and 0.2°C/decade respectively during winter, summer, monsoon and annual. The solar radiation was found significantly increasing during monsoon but insignificantly during rest of seasons. The warming trend was detected in Ozat basin. The cereal crops like wheat may be replaced by some oilseed or pulse crop due to warming trend.
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