REN R495 Lecture Notes - Lecture 5: Sewage Sludge, Phosphogypsum, Biosolids
24 Jan 2019
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Document Summary
In drastically disturbed areas soil is non-existent or in short supply. Amendments are critical in developing a soil or substrate. Anthropogenic soils: soil that has been altered or built purposefully by humans: anthroposols not currently in canadian system of soil classification, accepted but not published yet. Substrate is the base of an anthroposol; material available in large amount that amendments are added to. Anything to change soil/substrate chemical, physical, biological properties. Often organic materials large amount of materials on your site is often mineral: soils left on site usually low in nutrients and/or organic materials. 2 main things to consider about selecting amendments: One amendment will also change multiple other characteristics. Example: goal to increase water holding capacity, added hydrogel (polyacrylamide), but did not provide plant nutrients or organic matter and plant growth suffered. Consider short & long term impacts (i. e. decomposition rates)
