Journal of Natural Environment

Determine of the effective soil quality indexes associated with land use

Document Type : Research Paper

Author

Faculty of Natural Resources

Abstract

The study of soil quality is important to identify the different management effects on natural resources and agricultural farmland. In this research soil quality index was evaluated in two depth of six land use of Shahryar region through physical and chemical attributes and multi variate data analysis. For this purpose six different land uses/management were selected including rangelands (wild, exclosure and, grazing) and agriculture (Pistachio garden, alfalfa and wheat cultivation). A systematic-random strategy was carried at 0-15 cm and 15-30 cm depth by and soil properties were measured in the laboratory (98 samples). The soil attributes include: texture, bulk density, water holding capacity, permanent wilting point, field capacity, electrical conductivity, pH, organic carbon, total N, lime, P, K, Na, K and SAR. Statistical analysis shows that, soil properties were grouped into five significant factors for the 0-15 cm depth as: 1-soil salinity, 2- soil nutrients, 3-soil texture, 4- soil phosphor and 5-soil humidity. Factor 1 was known as the most dominant and potassium element (K) contributed the largest factor loading. In 15-30 cm depth, four significant factors were identified (1) salinity; 2) humidity; 3) texture and 4) phosphor). While, in15-30 cm depth, factor 1 was distinguished as the most dominant and SAR and Ec known as the most effective variables for soil attribute. Generally, results indicated that soil salinity factor was the most important factor for soil quality assessment.

Keywords

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Journal of Natural Environment
Volume 71, Issue 2
September 2018
Pages 239-253