Common Utilization Types Change Urgency in Horand Region
2020
Hossein Rezaei | Samira Rasouli | Moslem Servati | , Aliasghar Jafarzadeh
Background & Objective: In this research work, land suitability as one of the first step in sustainable agriculture was done to find urgency of utilization type change in Horand region. Also, different aspects of qualitative and quantitative land suitability methods were discussed to determine and improve the involved criteria in sustainable agriculture evaluation. Materials & Methods: Qualitative and quantitative land suitability of common utilization types in study area such as rainfed and irrigated wheat and onion carried out by providing climate, landscape and soil information. Chi-square test, Pearson correlation and Regression relationship were performed to test accuracy and validity of evaluation methods. The suitability zoning of study area was completed for different land utilization types and behind interpretation output maps, the management level was analyzed. Results: Dominant climate and slope limitation with other studied factors which had role in decrease of suitability in some case, caused to suitability classes of N for rainfed wheat, S1to N for irrigated wheat and N for onion. Statistical studies confirm the accuracy of the evaluation methods. Determined middle and low levels of managements are keeping with field conditions. Conclusion: Unsuitability and in some cases low suitability of the region, indicates the urgency of change in common utilization type. There isn’t so important difference between qualitative and quantitative suitability evaluation methods in high limitation with unsuitable class. Environmental and management factors which have indirect effects on limitations should be considered behind yield value in land management index determining.
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