CLIMATE CHANGE AND RAINFED WHEAT PRODUCTION IN IRAN

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KOOCHEKI A.; KAMALI GH.

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Paper Information

Journal: Iranian Journal of Field Crops Research Year:2010 | Volume:8 | Issue:3 Page(s): 508-520

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Information Journal Paper

Title

CLIMATE CHANGE AND RAINFED WHEAT PRODUCTION IN IRAN

Author(s)

KOOCHEKI A. | KAMALI GH. | Issue Writer Certificate

Keywords

CLIMATE CHANGEQ2

RAINFED WHEATQ3

GENERAL CIRCULATION MODELSQ2

SIMULATIONQ2

YIELDQ2

IRANQ2

Abstract

This research was conducted to evaluate the impacts of CLIMATE CHANGE on RAINFED WHEAT growth and YIELD at country level. Weather data generated by a General Circulation model based on the ICCP scenarios for the target years of 2025 and 2050. Daily weather data including minimum and maximum temperatures, precipitation and radiation were used as the inputs of a growth SIMULATION model for rainfed after calibration and validation for predicting wheat YIELD under current climatic conditions. Using the model, the impacts of CLIMATE CHANGE on wheat growth and YIELD was predicted and compared with the current data. The SIMULATION results indicated that leaf area index and absorbed radiation by wheat canopy was reduced under climatic conditions of the target years. Reduction of absorbed radiation resulted to a lower crop growth rate and consequently drastic reduction in dry matter production. Estimated drought stress index for the future climate conditions showed that reduction of crop growth rate was mainly resulted from water shortage due to increased evapotranspiration. Reduction of the length of growth period together with a considerable decline of harvest index resulted in a significant reduction of RAINFED WHEAT YIELD despite the positive effects of increased CO2 concentration and this negative impacts on wheat YIELD was intensified from 2025 towards 2050. SIMULATION results showed that the potential impact of CLIMATE CHANGE on RAINFED WHEAT YIELD was more pronounced in Eastern regions of the country compared to the Western production areas. The overall country level reduction of RAINFED WHEAT YIELD was estimated in the range of 16 to 25 % and 22 to 32% for the years 2025 and 2050, respectively.

Cites

DETERMINATION OF AGROCLIMATIC AREAS FOR DRY PLANTING OF WHEAT BASED ON CLIMATIC PARAMETERS IN KURDISTAN PROVINCE

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APA: Copy

KOOCHEKI, A., & KAMALI, GH.. (2010). CLIMATE CHANGE AND RAINFED WHEAT PRODUCTION IN IRAN. IRANIAN JOURNAL OF FIELD CROPS RESEARCH, 8(3), 508-520. SID. https://sid.ir/paper/119357/en

Vancouver: Copy

KOOCHEKI A., KAMALI GH.. CLIMATE CHANGE AND RAINFED WHEAT PRODUCTION IN IRAN. IRANIAN JOURNAL OF FIELD CROPS RESEARCH[Internet]. 2010;8(3):508-520. Available from: https://sid.ir/paper/119357/en

IEEE: Copy

A. KOOCHEKI, and GH. KAMALI, “CLIMATE CHANGE AND RAINFED WHEAT PRODUCTION IN IRAN,” IRANIAN JOURNAL OF FIELD CROPS RESEARCH, vol. 8, no. 3, pp. 508–520, 2010, [Online]. Available: https://sid.ir/paper/119357/en

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