期刊
AGRICULTURE ECOSYSTEMS & ENVIRONMENT
卷 240, 期 -, 页码 101-108出版社
ELSEVIER SCIENCE BV
DOI: 10.1016/j.agee.2017.02.006
关键词
Vegetative environmental buffer; Shelterbelt; Particulate; Lidar; Emissions; Animal feeding operation
资金
- USDA NRCS Conservation Innovation Grant Program [69-3A75-12-244]
- USDA National Institute of Food and Agriculture Hatch Project [OKL02882]
- University of Delaware
- Oklahoma State University
- University of Maryland
- USDA-ARS intramural funding [58-5030-5-899, 3096-66000-003-00, 5030-11610-002-00, 5030-31000-005-00, 804231000-005-00, 8042-12610-002-00]
Particulate matter emitted from tunnel-ventilated animal feeding operations (AFOs) is known to transport malodorous compounds. As a mitigation strategy, vegetative environmental buffers (VEBs) are often installed surrounding AFOs to capture particulates and induce lofting and dispersion. Currently, point measurements are the primary means by which VEB performance has been investigated. The existing techniques lack spatial and temporal resolution and fail to assign the observed particulate reduction to capture, lofting, or dispersion. This study presents a technique for estimating the capture efficiency of a VEB using lidar and attributes all observed reduction to particulate capture, thereby delineating the effects of capture and lofting. The experiments revealed a capture efficiency ranging from 21 to 74%. Instantaneous lidar scans showed periodic lofting well above the VEB, but when scans were averaged over several hours, the plumes appeared Gaussian. This paper documents experimental evidence quantifying the capture efficiency of a VEB. It also establishes an experimental framework for future studies on the efficacy of various emissions mitigation strategies. (C) 2017 Elsevier B.V. All rights reserved.
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