Chapter 5 3 Climate and soil erosion variables Intensity Duration Amount: determined by intensity and duration Types: storms event, seasonal distribution Time-area-intensity relationships 2021/2/22 Assessment of Climate/Change Impacts 16of56
Chapter 5 2021/2/22 Assessment of Climate/Change Impacts 16 of 56 (3) Climate and soil erosion variables • Intensity • Duration • Amount: determined by intensity and duration • Types: storms event, seasonal distribution • Time-area-intensity relationships
Chapter 5 3 Climate and soil erosion Individual climate factors Wind Velocity/Soil protection Potentially an agent of erosion in all climates not only arid semi-arid climates Temperature Weathering processes 2021/2/22 Assessment of climate/Change Impacts 17of56
Chapter 5 2021/2/22 Assessment of Climate/Change Impacts 17 of 56 (3) Climate and soil erosion Individual climate factors • Wind Velocity/Soil protection Potentially an agent of erosion in all climates not only arid semi-arid climates • Temperature Weathering processes
Chapter 5 3 Climate and soil erosion Climate complex- climate and normal erosion Wet and humid regions- protected by forest Subhumid lands- protected by tall prairie grasses Semiarid areas--protected by short grasses Deserts-- protected by desert shrubs partiall Regards to erosion- Greatest natural weakness lies on the drier margins of semiarid climate and within arid regions 2021/2/22 Assessment of Climate/ Change Impacts
Chapter 5 2021/2/22 Assessment of Climate/Change Impacts 18 of 56 (3) Climate and soil erosion Climate complex– climate and normal erosion • Wet and humid regions– protected by forest • Subhumid lands– protected by tall prairie grasses • Semiarid areas-- protected by short grasses • Deserts-- protected by desert shrubs partially • Regards to erosion– Greatest natural weakness lies on the drier margins of semiarid climate and within arid regions
Chapter 5 3 Climate and soil erosion Climate complex- climate and accelerated erosion Since baring the soil allows the climatic elements to operate to their fullest capacity, climate becomes extremely important in considering accelerated erosion Where rainfall intensities are highest and rainstorm durations are at a maximum, gullying and sheet washing cause the greatest damage 2021/2/22 Assessment of climate/Change Impacts 19of56
Chapter 5 2021/2/22 Assessment of Climate/Change Impacts 19 of 56 (3) Climate and soil erosion Climate complex– climate and accelerated erosion • Since baring the soil allows the climatic elements to operate to their fullest capacity, climate becomes extremely important in considering accelerated erosion. • Where rainfall intensities are highest and rainstorm durations are at a maximum, gullying and sheet washing cause the greatest damage