T19-1 Soil Science and Management, 4E Chapter 19 Urban Soils

T19-2 Soil Science and Management, 4E Objectives List characteristics of many urban soils Describe ways of dealing with urban soils Describe modified and structural soils Describe erosion control on urban sites Discuss zero-runoff concepts

T19-3 Soil Science and Management, 4E Terms to Know Bioswales Bioremediation Brown fields Debris basins Hydroseeding Retention ponds Recharge basins Rip-rap Silt fences

T19-4 Soil Science and Management, 4E Characteristics of Urban Soils Soil variability and classification Buried debris Compaction Soil contamination –Deicing salts –Heavy-metal contamination –Brown fields

T19-5 Soil Science and Management, 4E Urban Erosion Controlling erosion –Keeping disturbed areas small –Protect disturbed areas –Keep runoff velocities low –Divert runoff away from disturbed areas –Retain sediment on-site Establishing vegetation Calculating soil loss

T19-6 Soil Science and Management, 4E Summary Urban soils exhibit: –Great variation –Poor soil –Buried debris –Compaction –Contamination Difficult to classify Modified and structured soils can improve growth of trees and plants Keep disturbed areas small Establish vegetative cover Divert runoff