Agro-climatic Zones Of Egypt Research Articles

Suitability of Representative Concentration Pathway Climate Change Scenarios to Project Weather Elements in the Agro-climatic Zones of Egypt

The objective of this study was to compare between measured weather data (2010-2019) and projected data for the same period obtained from three global climate models (HadGEM2-ES, CSIRO-Mk3-6-0, and MIROC5), with its four RCPs scenarios (RCP2.6, RCP4.5, RCP6.0 and RCP8.5) developed for the five agro climatic zones of Egypt and determine the most suitable scenario to be used in each agro-climatic zone for projection of the effect of climate change in the future on the agro-climatic zones of Egypt. Our results revealed that the four climate change scenarios developed from the three models show high level of suitability in the projection of the three studied weather elements. Climate change scenario RCP6.0 and RCP8.5 developed by HadGEM2-ES and CSIRO-Mk3-6-0 attained the highest agreement between measured and projected values of the studied weather elements. Whereas, climate change scenario RCP2.6, RCP6.0 and RCP8.5 developed by MIROC5 attained the highest agreement between measured and projected values of the studied weather elements. Thus, we recommend the use these models in the projection of the effect of climate change in the future in the agro-climatic zones of Egypt.

Evapotranspiration data to determine agro-climatic zones in Egypt

Abstract The objective of this paper was to compare between agro-climatic zones developed from 10-year interval of weather data from 2005-2014, 20-year interval of weather data from 1995-2014 and the zoning developed by [NORELDIN et al. 2016] using 30-year interval from 1985-2014 in the old cultivated land of Egypt in the Nile Delta and Valley. Monthly means of weather data were calculated for each year, and then monthly values for 10-year and 20-years were calculated for each governorate. Basic Irrigation scheduling model (BISm) was used to calculate reference evapotranspiration (ETo). Analysis of variance was used and the means was separated and ranked using least significant difference test (LSD0.05). Our results showed that agro-climatic zoning using 20-year values of ETo was similar to the zones developed with 30-year values of ETo, with different values of average ETo in each zone. Furthermore, using 10-year values of ETo resulted in higher values of ETo in each zone, compared to 20-year and 30-year ETo values. However, the average value of ETo over the three classifications was close to each other. Thus, depending on the availability of weather data, either zoning can be sufficient to develop agro-climatic zones.

INCREASING CROP WATER PRODUCTIVITY BY USING THE BEST SCENARIOS OF THE CROPPING PATTERNS UNDER DIFFERENT AGRO-CLIMATIC ZONES

The aim of the present investigation was to improving and maximizing the crop water productivity and looking for the optimum Scenario of the crop pattern to achieve more crops per drop concept under different agro-climatic zones in Egypt. Therefore, different scenarios of cropping patterns (33 scenarios) were suggested to examine them. The results could be summarized in the following:- - In Nile Delta region the highest CWP (9.99 kg m-3 water consumption year-1) was obtained for the scenario of tomato (w) + potato (s). Nevertheless, the lowest scenario was registered for barley + soybean (1.21 kg m-3 water consumption year-1). - In Middle Egypt, the highest scenario gave maximum CWP was found for tomato (w) + potato (s) followed by potato (w) + tomato (s) then sugarcane. On the contrary, the lowest one was registered for barley + sunflower. - In the same direction, in Upper Egypt CWP ranged from 9.63 kg m-3 water consumption year-1 with the scenario of tomato (w) + potato (s) to 0.78 kg m-3 water consumption year-1 with the scenario of barley + soybean. - Results clearly showed that the cropping pattern at the three main agro- climatic zones in Egypt which include vegetables crops were superior greatly in crop water productivity. - The obtained results indicated that the values of ranged between 9.99 to 1.21 in Delta, 7.91 to 0.85 in Middle Egypt and 9.63 to 0.78 kg m-3 in Upper Egypt.