Agro-ecological zoning of lands in Behshahr county for the cultivation of autumn wheat and barley (Case study: Yaneh-Sar region)

Document Type : scientific research article

Authors

1 Ph.D. Student of Agro-technology, Gorgan University of Agricultural Sciences and Natural Resources. Gorgan, Iran.

2 Corresponding author, Professor, Gorgan University of Agricultural Sciences and Natural Resources. Gorgan, Iran

3 Professor, Gorgan University of Agricultural Sciences and Natural Resources. Gorgan, Iran

4 Associate Professor, Sari University of Agricultural Sciences and Natural Resources. Sari, Iran

Abstract

Abstract
Introduction and aim: One of the best ways to know the ecological ability of each region is the method of land surveying and evaluating land suitability. By this method, it is possible to determine the suitable area for the cultivation of each plant on a wide scale compared to the laboratory and field methods, and to take steps towards the sustainability of agriculture and prevention of environmental destruction with targeted management principles. This study was conducted with the aim of agro-ecological evaluation of agricultural lands in Behshahr county (Mazandarn province) for the cultivation of wheat and barley using spatial analysis of GIS and AHP in 2020-2021.
Materials and Methods For this purpose, climatic variables (minimum, maximum, average temperatures and annual precipitation), topography (slope, direction and height) and soil characteristics (texture, K, P, Cu, Mn, N, Fe, TNV, organic matter, EC, pH and OC) were used. Thematic maps of each variable were prepared in ArcGIS 10.8, then the final map was produced by assigning AHP weights. The final map was classified into four classes: highly suitable, suitable, semi-suitable and non-suitable.
Results: Based on the obtained results, it was found that the most suitable areas for wheat cultivation are located in the north and northwest regions, respectively, and for barley in the southeast parts of the region. In general, the area of two high suitable and suitable classes for two crops of wheat and barley included 13, 23.5, 35 and 28% of the total area respectively, but the area of semi-suitable and non-suitable classes for two crops were 35 and 59%, respectively. According to the obtained results, climatic conditions, especially rainfall, soil organic matter and topography were the main reasons for this condition.
Conclusion: In this research, it was found that for wheat and barley, 23 and 37% of the studied agricultural lands were suitable for production in terms of topography, soil and climate, and there is no limitation in terms of these variables. In general, among the limiting factors, annual rainfall, low percentage of organic matter and poor soil fertility are identified as the limiting factors for rainfed wheat and barley cultivation in semi-suitable and non-suitable classes.
Keywords: AHP, Barley, Geographical Information System (GIS), Land use suitability, Wheat.

Introduction and aim: One of the best ways to know the ecological ability of each region is the method of land surveying and evaluating land suitability. By this method, it is possible to determine the suitable area for the cultivation of each plant on a wide scale compared to the laboratory and field methods, and to take steps towards the sustainability of agriculture and prevention of environmental destruction with targeted management principles. This study was conducted with the aim of agro-ecological evaluation of agricultural lands in Behshahr county (Mazandarn province) for the cultivation of wheat and barley using spatial analysis of GIS and AHP in 2020-2021.

Keywords

Main Subjects


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