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Paper Information

Journal:   IRANIAN JOURNAL OF RANGE AND DESERT RESEARCH   FALL 2017 , Volume 24 , Number 3 (68) ; Page(s) 560 To 569.

Effects of different patches on qualitative indices of soil surface using Landscape Function Analysis (LFA) (Case study: Faraman Rangeland, Kermanshah)

* Gorgan University of Agricultural Sciences and Natural Resources, Gorgan, Iran
Patching pattern of vegetation is known in many parts of the world, especially in arid and semi-arid regions. Studying the effects of patches on surface features such as erosion, sedimentation, runoff, infiltration, etc. is important. The aim of this research was to investigate the effects of different patches on soil surface characteristics in Faraman Rangelands, Kermanshah Province. Eleven soil characteristics were measured in four vegetation patches of shrub, grass, forb, shrub-grass and shrub-forb in five replicates using the Landscape Functional Analysis (LFA). The study parameters were categorized as indicators of stability, infiltration and nutrient cycling was categorized for each patch. Duncan, Dennett and LSD tests were used to show the significant differences between mean values in SPSS software. Results showed that the patch of shrub-grass had maximum value in each of the three indicators of stability, infiltration and nutrient cycling. According to the results, significant differences were found for the stability indicator between shrub-grass and other patches (except shrub). There was a significant difference for infiltration index between shrub-grass patch and other patches and bare soil. Significant difference was also found for the nutrient cycling indicator between the shrub-grass patch and bare soil. Therefore, it is concluded that stability, infiltration and nutrient cycling in shrub-grass patches could be a good indicator for soil conservation in this rangeland. Overall, LFA can be a good way to determine the best type of vegetation patches to increase the sustainability and soil infiltration and thus preventing erosion in different areas.
Keyword(s): Quality indicators of soil surface,Landscape Functional Analysis,patches,Faraman Rangelands,erosion and sediment
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