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Determination of Soil Organic Carbon Variability of Rainfed Crop Land in Semi-arid Region (Neural Network Approach)

Author

Listed:
  • Yahya Parvizi
  • Manochehr Gorji
  • Mahmoud Omid
  • Mohammad Hossain Mahdian
  • Manochehr Amini

Abstract

Soil organic carbon (SOC) is a very important component of soil that supports the sustainability and quality in all ecosystems, especially in semi-arid region. This study was conducted to evaluate the effects of 15 different climatic, soil, and geometric factors on the SOC contents in different land use patterns and to determine relative importance of these desired variables for SOC estimation in one of the semi arid watershed zones in the western part of Iran. Feed forward back propagation artificial neural networks (ANN), was used to model and predict SOC. The performance of the model was evaluated using R2 and MBE values of tested data set. Results showed that 31-2-1 neural networks have highest predictive ability that explains %76 of SOC variability. Neural network models slightly overestimated SOC content, and had higher ability to detect management variables effects on SOC variability. In all ANN structure, management system dominantly controlled SOC variability in rainfed crop land of semi arid condition.

Suggested Citation

  • Yahya Parvizi & Manochehr Gorji & Mahmoud Omid & Mohammad Hossain Mahdian & Manochehr Amini, 2010. "Determination of Soil Organic Carbon Variability of Rainfed Crop Land in Semi-arid Region (Neural Network Approach)," Modern Applied Science, Canadian Center of Science and Education, vol. 4(7), pages 1-25, July.
    • Handle: RePEc:ibn:masjnl:v:4:y:2010:i:7:p:25
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    References listed on IDEAS

    as
    1. Limin Wang & Xiaolin Li & Yuting Mao, 2008. "A Novel Approach of Multiple Submodel Integration Based on Decision Forest Construction," Modern Applied Science, Canadian Center of Science and Education, vol. 2(2), pages 1-9, March.
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    More about this item

    JEL classification:

    • R00 - Urban, Rural, Regional, Real Estate, and Transportation Economics - - General - - - General
    • Z0 - Other Special Topics - - General

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