Investigation on soil surface indicators and rangeland functional properties by Landscape Function Analysis method (LFA) (Case study: Jiroft rangeland)

This research was aimed to investigate the effects of restoration practices on rangeland health in Jiroft. The study was conducted using landscape function analysis (LFA). Three study sites including exclosure (Jebalbarz), contour furrow, and crescent pond in rangelands under grazing management (Anbarabad) were selected. Sampling was performed in a random-systematic manner using transects of 50 m and 100 m length, and patches and inter-patches were identified on each transect. Then, the length and width of the patches and distance between them were measured. Five replicates of each patches and inter-patches were selected and 11 soil factors were assessed. In the three study sites and control groups, functional indexes including infiltration, stability, and nutrient cycling were calculated through sum of scores using LFA software and changed to percent values. According to the results, the management activities applied could change the rangeland functional indicators and characteristics, so that range condition improved by exclosure. In addition, the average values recorded for the rangeland health indicators in ecological patches of restoration practices were higher as compared with control group. Duncan test results showed that there were significant differences for three functional indicators among all treatments, so that restoration practices could improve the rangeland function.