Dynamic Analysis Of Soil Erosion-Based Watershed Health

摘要: Accelerated soil erosion is one of the most important detrimental factors affecting quality watershed health. Due to different environmental pressures and drivers, effort needed for ecological health resilience assessment in regards changeability. However, this subject has not been adequately studied yet. Towards this, present research, an innovative approach was developed conceptualizing dynamics viewpoint erosion. A risk-based study conducted quantitatively characterize spatiotemporal variability erosion-based industrialized i.e., Shazand Watershed using conceptual reliability, vulnerability (RelResVul) framework four node years 1986, 1998, 2008 2014. To end, estimated at monthly scale 24 sub-watersheds by applying Revised Universal Soil Loss Equation (RUSLE). The RelResVul indicators were then computed according threshold defined watershed. geometric mean used combine three risk index ultimately calculated each sub-watershed. Additionally, change detection analysis over 1986 According results indices, very healthy, moderately unhealthy un-healthy conditions respectively distributed some 67, 25, zero, zero eight percent 1986; 50, 13, eight, 29 % 1998; 71, 83, finally 17, 12 revealed oscillating trend during whole period (1986 -2014). So that, periods 1986-1998, 1986-2008 1986-2014, decreased tune 23, 13 six percent, respectively. Whilst, improved 1998-2008 (13 %), 2008-2014 (eight percent) 1998-2014 (22 %). also identified ‘hot spots’ land degradation ‘bright improvement Watershed. proposed would provide a sustainable supporting decision makers comprehend health-related targets integrated management plans.