comparison of laboratory and field remote sensing methods to measure forage quality实验室和现场遥感方法的比较来衡量饲料质量.pdfVIP

Int. J. Environ. Res. Public Health 2010, 7, 3513-3530; doi:10.3390/ijerph7093513 OPEN ACCESS International Journal of Environmental Research and Public Health ISSN 1660-4601 /journal/ijerph Article Comparison of Laboratory and Field Remote Sensing Methods to Measure Forage Quality Xulin Guo 1,*, John F. Wilmshurst 2 and Zhaoqin Li 1 1 Department of Geography, University of Saskatchewan, 117 Science Place, Saskatoon, Saskatchewan, S7N 5C8, Canada; E-Mail: zhl237@mail.usask.ca 2 Jasper National Park of Canada, Parks Canada, P.O. Box 10, Jasper, AB T0E 1E0, Canada; E-Mail: John.Wilmshurst@pc.gc.ca * Author to whom correspondence should be address; E-Mail: xulin.guo@usask.ca; Tel.: +1-306-966-5663; Fax: +1-306-966-5680. Received: 5 August 2010 / Accepted: 16 September 2010 / Published: 2 7 September 2010 Abstract: Recent research in range ecology has emphasized the importance of forage quality as a key indicator of rangeland condition. However, we lack tools to evaluate forage quality at scales appropriate for management. Using canopy reflectance data to measure forage quality has been conducted at both laboratory and field levels separately, but little work has been conducted to evaluate these methods simultaneously. The objective of this study is to find