Field investigation of compost blankets for erosion control under concentrated flow conditions

dc.contributor.author	Zhu, X	en
dc.contributor.author	Risse, LM	en
dc.date.accessioned	2014-06-06T06:48:57Z
dc.date.available	2014-06-06T06:48:57Z
dc.date.issued	2009	en
dc.identifier.issn	21510032	en
dc.identifier.uri	http://62.217.125.90/xmlui/handle/123456789/4357
dc.relation.uri	http://www.scopus.com/inward/record.url?eid=2-s2.0-60749088901&partnerID=40&md5=a9daaee4f7053f3ab33a3b65d687389c	en
dc.subject	Compost blanket	en
dc.subject	Concentrated flow	en
dc.subject	Micro-dams	en
dc.subject	Rill erosion	en
dc.subject.other	Bare soils	en
dc.subject.other	Compost blanket	en
dc.subject.other	Compost materials	en
dc.subject.other	Concentrated flow	en
dc.subject.other	Erosion controls	en
dc.subject.other	Erosion process	en
dc.subject.other	Field investigations	en
dc.subject.other	Flow-through	en
dc.subject.other	Inflow conditions	en
dc.subject.other	Inflow rates	en
dc.subject.other	matrixes	en
dc.subject.other	Micro-dams	en
dc.subject.other	Rill erosion	en
dc.subject.other	Sheet-flows	en
dc.subject.other	Slope plots	en
dc.subject.other	Soil erosions	en
dc.subject.other	Soil surfaces	en
dc.subject.other	Solids concentrations	en
dc.subject.other	Surface flows	en
dc.subject.other	Suspended particles	en
dc.subject.other	Total loss	en
dc.subject.other	Yard wastes	en
dc.subject.other	Dams	en
dc.subject.other	Erosion	en
dc.subject.other	Soils	en
dc.subject.other	Composting	en
dc.subject.other	bare soil	en
dc.subject.other	compost	en
dc.subject.other	dam construction	en
dc.subject.other	erosion control	en
dc.subject.other	fieldwork	en
dc.subject.other	flow velocity	en
dc.subject.other	infiltration	en
dc.subject.other	inflow	en
dc.subject.other	rill	en
dc.subject.other	sheet flow	en
dc.subject.other	soil erosion	en
dc.title	Field investigation of compost blankets for erosion control under concentrated flow conditions	en
heal.type	journalArticle	en
heal.publicationDate	2009	en
heal.abstract	Compost blankets are recognized as an effective erosion control practice that has been utilized widely. While previous studies have proven that compost blankets can control erosion as well or better than traditional methods under normal rainfall and sheet flow conditions, little attention has been paid to how compost will respond to concentrated flow conditions. The objective of this research was to investigate erosion processes on compost blankets under concentrated flow conditions. Erosion control compost (ECC), yard waste compost (YWC), and a bare soil (BS, loam) were studied using four concentrated flow rates on 12.5% slope plots. Time to initiate discharge, flow velocity, solids concentration, and total loss of solids were measured. The erosion process and rill evolution under these conditions were observed and recorded. Results indicated that the time elapsed to commence discharge from compost plots was significantly longer than that from soil plots. Large amounts of inflow were able to infiltrate into the compost matrix and flow through it, leaving a smaller portion of surface flow on compost plots than on soil plots. Under high inflow rates (2.7 × 10-4 and 3.3 x 10-4 m 3/s), solids loss from compost plots was significantly less than those from soil plots. Under a same inflow conditions, average solids concentrations were significantly lower on compost plots than on soil plots, as deposition occurred in compost rills. Deposited solids often formed micro-dams in the compost rills, which further promoted flow through the compost matrix and deposition of suspended particles. The formation of micro-dams in compost plots was an important mechanism in preventing soil erosion under concentrated flow conditions. Results of this study indicated that the erosion process on compost blankets may differ from classical shear-induced rill erosion on soil surfaces. Future work will investigate models that may be used to better understand and predict erosion of compost material under concentrated flow conditions. © 2009 American Society of Agricultural and Biological Engineers.	en
heal.journalName	Transactions of the ASABE	en
dc.identifier.issue	1	en
dc.identifier.volume	52	en
dc.identifier.spage	81	en
dc.identifier.epage	91	en