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Net Primary Productivity in Kouhdasht, its Spatio-Temporal Patterns and Relation to Meteorological Variables

    Authors

    • Moslem Borji Hassan Gavyar 1
    • Hadi Eskandari Dameneh 2
    • Hassan Khosravi 3

    1 M. Sc. in Watershed Management, Faculty of Natural Resources, University of Tehran, Karaj, I.R. Iran.

    2 PhD Student in Combating Desertification Faculty of Natural Resources, Hormozgan University, Bandar Abbas, I.R. Iran.

    3 Assistant Professors, Faculty of Natural Resources, University of Tehran, Karaj, I.R. Iran.

,

Document Type : Research Paper

10.22059/jrwm.2016.61497
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Abstract

Nowadays, temperature increase, rainfall decrease and its effect on the time dynamics of carbon fixation cycle still are faced by many uncertainties. Net Primary Production (NPP) is one of the main factors of carbon cycle; precipitation and temperature measurement are known as two useful tools to study different ecosystems stability and resilience in terms of climate. Hence, in this study, NPP distribution affected by climate parameters of temperature and precipitation have been investigated in four ecosystems of forests, grassland, irrigated agriculture and rain fed agriculture during the period of 2003-2010. Considering climate conditions of biomes, NPP estimation at regional scale was done based on the NASA Moderate Resolution Imaging Spectroradiometer (MODIS) MOD17 NPP product. The results showed that the regression relation was weak between NPP and rainfall for four studied ecosystems, in the other words, low coefficient between these two variables has caused no justified relationship between them. The regression relation between temperature and NPP in forests, pastures and rain-fed agriculture ecosystems follows quadratic equations with determined coefficient over 0.55. The results of this study show that the forest ecosystem resilience to water and temperature tensions is more than other ecosystems, and irrigated agriculture has the least resilience

Keywords

  • Net Primary Production
  • Rainfall
  • temperature
  • Kuhdasht city
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Journal of Range and Watershed Managment
Volume 69, Issue 3
December 2016
Pages 561-574
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  • PDF 1008.52 K
History
  • Receive Date: 04 August 2015
  • Revise Date: 11 January 2017
  • Accept Date: 11 April 2016
  • First Publish Date: 21 November 2016
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How to cite
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  • Mendeley
  • BibTeX
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Statistics
  • Article View: 620
  • PDF Download: 418

APA

Borji Hassan Gavyar, M., Eskandari Dameneh, H., & Khosravi, H. (2016). Net Primary Productivity in Kouhdasht, its Spatio-Temporal Patterns and Relation to Meteorological Variables. Journal of Range and Watershed Managment, 69(3), 561-574. doi: 10.22059/jrwm.2016.61497

MLA

Moslem Borji Hassan Gavyar; Hadi Eskandari Dameneh; Hassan Khosravi. "Net Primary Productivity in Kouhdasht, its Spatio-Temporal Patterns and Relation to Meteorological Variables". Journal of Range and Watershed Managment, 69, 3, 2016, 561-574. doi: 10.22059/jrwm.2016.61497

HARVARD

Borji Hassan Gavyar, M., Eskandari Dameneh, H., Khosravi, H. (2016). 'Net Primary Productivity in Kouhdasht, its Spatio-Temporal Patterns and Relation to Meteorological Variables', Journal of Range and Watershed Managment, 69(3), pp. 561-574. doi: 10.22059/jrwm.2016.61497

VANCOUVER

Borji Hassan Gavyar, M., Eskandari Dameneh, H., Khosravi, H. Net Primary Productivity in Kouhdasht, its Spatio-Temporal Patterns and Relation to Meteorological Variables. Journal of Range and Watershed Managment, 2016; 69(3): 561-574. doi: 10.22059/jrwm.2016.61497

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