Spectral Indices to Improve Crop Residue Cover Estimation under Varying Moisture Conditions
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چکیده
منابع مشابه
Spectral Indices to Improve Crop Residue Cover Estimation under Varying Moisture Conditions
Crop residues on the soil surface protect the soil against erosion, increase water infiltration and reduce agrochemicals in runoff water. Crop residues and soils are spectrally different in the absorption features associated with cellulose and lignin. Our objectives were to: (1) assess the impact of water on the spectral indices for estimating crop residue cover (fR); (2) evaluate spectral wate...
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1545 Soil Sci. Soc. Am. J. 73:1545-1558 doi:10.2136/sssaj2008.0311 Received 26 Sept. 2008. *Corresponding author ([email protected]). © Soil Science Society of America 677 S. Segoe Rd. Madison WI 53711 USA All rights reserved. No part of this periodical may be reproduced or transmitted in any form or by any means, electronic or mechanical, including photocopying, recording, or any informatio...
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[1] We tested the extent to which the spectral response (0.4–2.5 Mm) of Sphagnum can be used to indicate changes in near-surface hydrological conditions in northern wetlands. Via laboratory experimentation on three typical Sphagnum species we found that: (1) there is a clear link between (a) a ratio of SWIR/NIR reflectance (ETM+ Ch 5/ Ch4) and (b) the relative depth of the water absorbion featu...
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Management of crop residues is an important consideration for reducing soil erosion and increasing soil organic carbon. Current methods of measuring residue cover are inadequate for characterizing the spatial variability of residue cover over large fields. The objectives of this research were to determine the spectral reflectance of crop residues and soils and to assess the limits of discrimina...
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ژورنال
عنوان ژورنال: Remote Sensing
سال: 2016
ISSN: 2072-4292
DOI: 10.3390/rs8080660