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Delineating changes in climatic variables and its impact on the Astragalus verus Olivier habitats in Isfahan Province

    Authors

    • Morteza Khodagholi 1
    • Razieh Saboohi 2

    1 Isfahan Agriculture and Natural Resources Research and Education Center, AREEO, Isfahan, I.R.Iran

    2 expert researcher, Research Division of Soil Conservation and Watershed Management, Isfahan Agricultural and Natural Resources Research and Education Center, AREEO, Isfahan, Iran

,

Document Type : Research Paper

10.22059/jrwm.2019.242978.1169
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Abstract

The genus of Astragalus accounts for 31.4 percent of area of Isfahan Province with Astragalus verus Olivier as a foremost species. This study aimed to investigate the contributing climatic variables to distribution of this species. Moreover, the trends of climatic variables and their influence on the species mortality. In doing so, 56 climatic variables relating to January, March, July, and the entire year were utilized. The Principal Component Analysis was employed to trim down the number of variables and their trends were analyzed using the Mann-Kendall test. The correlation analysis was ultimately used to investigate the association between climatic changes and mortality of Astragalus verus. Results showed that cooling temperature contributed most in the distribution of the species. The trend of temperature also indicated that mean temperature followed an upwards trend in most months of the year. Except Ardestan, Isfahan, Eastern Isfahan, and Kaboutar-Abad, annual precipitation declined but not significantly at the level of 1 and 5 percent. The dried up stands observed in Naeen region was estimated to be around 25 percent where the largest decreasing precipitation and increasing temperature was recorded. This estimate was only around 8 percent in Khansar and Chadegan whose increasing temperature and wind speed as well as decreasing precipitation were compensated by having a good growing potential.

Keywords

  • Isfahan
  • Principal component analysis
  • drying-up
  • trend of climatic parameters
  • Astragalus verus
  • climatic variables
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Journal of Range and Watershed Managment
Volume 72, Issue 2
September 2019
Pages 359-374
Files
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  • PDF 8.56 M
History
  • Receive Date: 03 October 2017
  • Revise Date: 01 October 2019
  • Accept Date: 30 July 2019
  • First Publish Date: 23 August 2019
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How to cite
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Statistics
  • Article View: 235
  • PDF Download: 190

APA

Khodagholi, M., & Saboohi, R. (2019). Delineating changes in climatic variables and its impact on the Astragalus verus Olivier habitats in Isfahan Province. Journal of Range and Watershed Managment, 72(2), 359-374. doi: 10.22059/jrwm.2019.242978.1169

MLA

Morteza Khodagholi; Razieh Saboohi. "Delineating changes in climatic variables and its impact on the Astragalus verus Olivier habitats in Isfahan Province". Journal of Range and Watershed Managment, 72, 2, 2019, 359-374. doi: 10.22059/jrwm.2019.242978.1169

HARVARD

Khodagholi, M., Saboohi, R. (2019). 'Delineating changes in climatic variables and its impact on the Astragalus verus Olivier habitats in Isfahan Province', Journal of Range and Watershed Managment, 72(2), pp. 359-374. doi: 10.22059/jrwm.2019.242978.1169

VANCOUVER

Khodagholi, M., Saboohi, R. Delineating changes in climatic variables and its impact on the Astragalus verus Olivier habitats in Isfahan Province. Journal of Range and Watershed Managment, 2019; 72(2): 359-374. doi: 10.22059/jrwm.2019.242978.1169

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