Does Compost Selection Impact Green Roof Substrate Performance? Measuring Physical Properties, Plant Development, and Runoff Water Quality
| Autor: | Jason M. Matlock, D. Bradley Rowe |
|---|---|
| Rok vydání: | 2017 |
| Předmět: |
Ecology
biology Compost Environmental engineering Soil Science 04 agricultural and veterinary sciences 010501 environmental sciences engineering.material biology.organism_classification 01 natural sciences Bulk density Substrate (marine biology) Sedum Carex eburnea Field capacity Agronomy Hydraulic conductivity 040103 agronomy & agriculture engineering 0401 agriculture forestry and fisheries Environmental science Surface runoff Waste Management and Disposal 0105 earth and related environmental sciences |
| Zdroj: | Compost Science & Utilization. 25:231-241 |
| ISSN: | 2326-2397 1065-657X |
| Popis: | Six green roof substrate blends were created by using composts sourced from local suppliers and the Michigan State University Student Organic Farm. Bulk density, field capacity, total porosity, and saturated hydraulic conductivity were determined for each substrate and compared to an un-amended expanded shale aggregate. Significant differences were detected in all measured physical properties. A plant growth study was conducted in a greenhouse. Ocimum basilicum (basil), Sedum floriforum (sedum), and Carex eburnea (bristleleaf sedge) were grown in a depth of 10 cm of all six substrates for 6 months. The greatest dry shoot masses in bristleleaf sedge and sedum were twice those of the smallest masses. The largest wet harvest of basil was four times greater than the smallest harvest. Runoff water was collected after simulated precipitation events on regular intervals during the plant growth study and analyzed for nitrate and phosphate concentrations. Ion concentrations were greatest on the first measu... |
| Databáze: | OpenAIRE |
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