Analying the vulnerability of the lorestan province due to changes in effective rainfalls, based on USDA method
The goal of this research is studying the effect of recent climate changes, espeeially heat rise on the amount of effective rainfall in the lorestan peovince. Effective rainfall is the amount of fall which, after evaporation, is absorbed in the ground. in the ground.in USDA method and the us agricu...
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Kharazmi University
2021-12-01
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| Series: | تحقیقات کاربردی علوم جغرافیایی |
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| Online Access: | http://jgs.khu.ac.ir/article-1-3650-en.pdf |
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| author | ali saadat mohamad saligheh mohamadhosin nassrzadeh |
| author_facet | ali saadat mohamad saligheh mohamadhosin nassrzadeh |
| author_sort | ali saadat |
| collection | DOAJ |
| description | The goal of this research is studying the effect of recent climate changes, espeeially heat rise on the amount of effective rainfall in the lorestan peovince. Effective rainfall is the amount of fall which, after evaporation, is absorbed in the ground. in the ground.in USDA method and the us agriculture, the amount of rain abstorbed in a growth perlod of a plant and available for its consumption is called effective raifoll. The results showed that the amouent of rainfall in the first period is more than that of the second. The frequency of raining days got reduced in the after-climate- change period. Heat got increased in the second period. Evaporation was more in the second period. Relation humidity got decreased in the second compared to the first period, and wind speed increased by studying the process of the data changes, it became evident that climate change leads to the increased inconsistent rainfalls in the studied climate variables indicate that under the effect of climate change , Based on Vibol method, droughts caused by effective rainfalls were calculated, and the probability of effective rainfalls in 5 time periods was accounted for. It was shown that in the years 1369 to 1396, effective rainfall in the region was scarce, so it was very influential. With Dobif Model, effective rainfall was analyzed, and years with the least effective rainfall for dry farming with positive signal, that is, appropriate conditions, and negative, that is, inappropriate conditions were recorded. Based on linear coefficient, rainfall trends in the three stations of Khorramabad, Aligudarz and Borujerd. Geographical distribution analysis of effective rainfall showed that in the south and south-east of the province, the coefficient of effective rainfall was more than the rest of the province. This coefficient was decreasing when it comes to the south-west of the province. Effective rainfall decrease was more due to increasing evaporation happening in this part. the effective rainfall in the studied region got decreased, therefore, preserving underground water resources, on which natural life depend, should be considered more than ever. |
| format | Article |
| id | doaj-art-7a4f5bb35d2e418fb10655c096e9f146 |
| institution | Kabale University |
| issn | 2228-7736 2588-5138 |
| language | fas |
| publishDate | 2021-12-01 |
| publisher | Kharazmi University |
| record_format | Article |
| series | تحقیقات کاربردی علوم جغرافیایی |
| spelling | doaj-art-7a4f5bb35d2e418fb10655c096e9f1462025-01-31T17:28:49ZfasKharazmi Universityتحقیقات کاربردی علوم جغرافیایی2228-77362588-51382021-12-012163427442Analying the vulnerability of the lorestan province due to changes in effective rainfalls, based on USDA methodali saadat0mohamad saligheh1mohamadhosin nassrzadeh2 PhD student in climatology, kharazmi University assiciated proffesor in climatology, kharazmi university assistant proffesor in climatology, kharazmi university The goal of this research is studying the effect of recent climate changes, espeeially heat rise on the amount of effective rainfall in the lorestan peovince. Effective rainfall is the amount of fall which, after evaporation, is absorbed in the ground. in the ground.in USDA method and the us agriculture, the amount of rain abstorbed in a growth perlod of a plant and available for its consumption is called effective raifoll. The results showed that the amouent of rainfall in the first period is more than that of the second. The frequency of raining days got reduced in the after-climate- change period. Heat got increased in the second period. Evaporation was more in the second period. Relation humidity got decreased in the second compared to the first period, and wind speed increased by studying the process of the data changes, it became evident that climate change leads to the increased inconsistent rainfalls in the studied climate variables indicate that under the effect of climate change , Based on Vibol method, droughts caused by effective rainfalls were calculated, and the probability of effective rainfalls in 5 time periods was accounted for. It was shown that in the years 1369 to 1396, effective rainfall in the region was scarce, so it was very influential. With Dobif Model, effective rainfall was analyzed, and years with the least effective rainfall for dry farming with positive signal, that is, appropriate conditions, and negative, that is, inappropriate conditions were recorded. Based on linear coefficient, rainfall trends in the three stations of Khorramabad, Aligudarz and Borujerd. Geographical distribution analysis of effective rainfall showed that in the south and south-east of the province, the coefficient of effective rainfall was more than the rest of the province. This coefficient was decreasing when it comes to the south-west of the province. Effective rainfall decrease was more due to increasing evaporation happening in this part. the effective rainfall in the studied region got decreased, therefore, preserving underground water resources, on which natural life depend, should be considered more than ever.http://jgs.khu.ac.ir/article-1-3650-en.pdflorestanrainfalleffective rainfallclimate changevibol methoddobif model |
| spellingShingle | ali saadat mohamad saligheh mohamadhosin nassrzadeh Analying the vulnerability of the lorestan province due to changes in effective rainfalls, based on USDA method تحقیقات کاربردی علوم جغرافیایی lorestan rainfall effective rainfall climate change vibol method dobif model |
| title | Analying the vulnerability of the lorestan province due to changes in effective rainfalls, based on USDA method |
| title_full | Analying the vulnerability of the lorestan province due to changes in effective rainfalls, based on USDA method |
| title_fullStr | Analying the vulnerability of the lorestan province due to changes in effective rainfalls, based on USDA method |
| title_full_unstemmed | Analying the vulnerability of the lorestan province due to changes in effective rainfalls, based on USDA method |
| title_short | Analying the vulnerability of the lorestan province due to changes in effective rainfalls, based on USDA method |
| title_sort | analying the vulnerability of the lorestan province due to changes in effective rainfalls based on usda method |
| topic | lorestan rainfall effective rainfall climate change vibol method dobif model |
| url | http://jgs.khu.ac.ir/article-1-3650-en.pdf |
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