THE RELATIONSHIP OF CLIMATIC PARAMETERS AND DRY-FARMED WHEAT HARVEST USING REGRESSION MODEL (CASE STUDY OF SILAKHOOR PLAIN)

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AZIZI GHASEM; YARAHMADY D.

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Journal: GEOGRAPHICAL RESEARCH QUARTERLY Year:2003 | Volume:35 | Issue:44 Page(s): 23-30

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Title

THE RELATIONSHIP OF CLIMATIC PARAMETERS AND DRY-FARMED WHEAT HARVEST USING REGRESSION MODEL (CASE STUDY OF SILAKHOOR PLAIN)

Author(s)

AZIZI GHASEM | YARAHMADY D. | Issue Writer Certificate

Keywords

SILAKHOOR PLAINQ2

DRYFANNED WHEATQ3

REGRESSION EQUATIONQ2

CLIMATIC PARAMETERSQ2

Abstract

In this study an attempt has been made to investigate, using a REGRESSION EQUATION, the relationship of CLIMATIC PARAMETERS (independent variables) and increase or decrease in dry-farmed wheat harvest (dependent variable) in SILAKHOOR PLAIN, located in Lorestan province. The CLIMATIC PARAMETERS included in the study are: Spring and Autumn rainfall level, the number of freezing-weather days, the first autumn rainfall and the number of rainy days with a rainfall of above one millimeter during the humid period of they year.The results reveal that there is a direct relationship between the dry-farmed wheat harvest and the variables of spring and autumn rainfall level and the number of rainy days during the humid time of the year, but there is a negative relationship (or correlation) between the dry-farmed wheat harvest and the variables of the number of freezing-weather spring days and the delay in the first autumn rainfall.Furthermore, according to the indicator of R-squared in the mentional regression, only %47. of the changes in the dependent variable (dry-farmed wheat harvest) could be accounted for by in dependent variables used in the regression model, and %53 of the variation in dry-farmed wheat harvest is accounted for by other parameters.

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تعیین مناسبترین تاریخ کشت گندم در مناطق دیم خیز غرب کشور با استفاده از داده های اقلیمی و شروع بارندگی

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APA: Copy

AZIZI, GHASEM, & YARAHMADY, D.. (2003). THE RELATIONSHIP OF CLIMATIC PARAMETERS AND DRY-FARMED WHEAT HARVEST USING REGRESSION MODEL (CASE STUDY OF SILAKHOOR PLAIN). GEOGRAPHICAL RESEARCH QUARTERLY, 35(44), 23-30. SID. https://sid.ir/paper/5543/en

Vancouver: Copy

AZIZI GHASEM, YARAHMADY D.. THE RELATIONSHIP OF CLIMATIC PARAMETERS AND DRY-FARMED WHEAT HARVEST USING REGRESSION MODEL (CASE STUDY OF SILAKHOOR PLAIN). GEOGRAPHICAL RESEARCH QUARTERLY[Internet]. 2003;35(44):23-30. Available from: https://sid.ir/paper/5543/en

IEEE: Copy

GHASEM AZIZI, and D. YARAHMADY, “THE RELATIONSHIP OF CLIMATIC PARAMETERS AND DRY-FARMED WHEAT HARVEST USING REGRESSION MODEL (CASE STUDY OF SILAKHOOR PLAIN),” GEOGRAPHICAL RESEARCH QUARTERLY, vol. 35, no. 44, pp. 23–30, 2003, [Online]. Available: https://sid.ir/paper/5543/en

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