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دور المناخ في تباين الاستهلاك المائي لمحصول القطن في وسط وجنوب العراق == The Role Of Climate In The Consumptive Water Variation Use For Cotton Crop In The Middle And South Of Iraq
Author name:
حيدر هاتف احمد الجبوري
Supervisor name:
اسماعيل داود سليمان العامري
General topic:
Geography
Specific topic:
Natural Geography
Degree:
Master
University:
University of Baghdad - Ibn Rushd College Of Education For Human Sciences
Language:
Arabic
University location:
Baghdad
First pages:
10T1519 - p.pdf
Abstract:
تناولت هذه الدراسة تاثير الظروف المناخية في الاستهلاك المائي لمحصول من المحاصيل الزيتية في وسط وجنوب العراق الا وهو محصول القطن, وعلى هذا الاساس هدفت الدراسة الى تقدير كمية استهلاكه المائي مستندة الى عاملين رئيسين هما : - 1. العامل المناخي الذي يتمثل باس | This study tackles the effect of climate conditions on the water consumption of the oil crops in the middle and southern Iraq, namely, cotton. On that basis the study the study aims at evaluating the quantity of water consumption on the following two factors : 1 - The climate factor influences is represented by the use of the climate elements in evaluating the evaporation exudation which represents a great share of consumption depending on the experimental method in evaluation represented by Penman - Monteith Equation which was applied on the form of a computer program known as CROPWAT 8.0.2 - The botanical factor which is represented by the crop of KC.For the clarification of the image of the geographic distribution of the water consumption and linking them with the prevalent climate in the area of the study, the researcher used the climate data for (13) climate station distributed to the middle and southern of Iraq for the climate circle (31) years extending from 1983 - 2013. The study proved that the quantity of water consumed by the crop of cotton was little in the first stages of growth for the area of the study (94.4, 160.9 ml) in April and May respectively. Then, the rates began to escalate in the stages of ripening and flowering to (242.7, 319.3, 239 ml) in June and July respectively. They decrease in the harvest stage to (108 ml) in September. The study proved that the general line of evaporation - exudation during the season of cotton crop growth is declining in most of the areas according to Penman - Monteith Equation in the following stations (Tikrit, Kahnqeen, kerbala, Hella, Al - hay, Dewaniaym, Najaf, Nasiriya and Ammarah). While the general line shows a significant increase in the stations of (Baghdad, Simawah and Basrah). The water consumption varies during the season of cotton growth seasonally in the area of the study. The research divided the scope of study into two main areas depending on the rate of water consumption as follows : First : the low water consumption scope : this represents the southern party of the undulant area and the northern part of the Plain and the western plateau this includes (Tikrit, Kahnqeen, Baghdad, Ramadi, Karbala, Hella, Al - Dewaniaym, Najaf ).Second : the high water consumption scope : this represents the middle and desert plateau this comes second in terms of area and includes (Al - hay, , Nassriya, Simawa, Basrah and Ammarah). In completion to the statement of the role of climate in the variation of the water consumption quantity temporally and spatially the researcher followed the statistical analytic method to show the correlation between the elements of climate as independent variables and the water consumption as a dependent variable by the use of SPSS. The results show a strong correlation between the water consumption (Y) and the climate elements (x1, x2, x3, x4, x5, x6, x7, x8, x9) in the stations of ( Kahnqeen, Baghdad, Dewaniaym, Al - hay), and a strong correlation between the water consumption (Y) and the climate elements (x4, x5, x6) in the station of Simawa. The value of interpretation coefficient (R2) of the factors effecting the water consumption of the stations of (Kahnqeen, Baghdad, Al - hay, Dewaniaym, Simawa) which attained to (%0.93, %0.96, 0.99, %0.97, 0.77) with a confidence degree of (%0.95) for all stations. The test rate (F) reached confidence degree of (%99). The study also concludes the possibility of using the multiple decline model for the studied stations to predict water consumption of the crop of cotton in the future
