منابع مشابه
“ The Changing Model of Soil ” Revisited Soil Science Issues – Pedology
Soil Sci. Soc. Am. J. 76:766–778 doi:10.2136/sssaj2011.0407 Received 28 Nov. 2011. *Corresponding author ([email protected]). © Soil Science Society of America, 5585 Guilford 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 information storag...
متن کاملAlgorithms for quantitative pedology: A toolkit for soil scientists
Soils are routinely sampled and characterized according to genetic horizons (layers), resulting in data that are associated with principal dimensions: location (x,y), depth (z), and property space (p). The high dimensionality and grouped nature of this type of data can complicate standard analysis, summarization, and visualization. The aqp package was developed to address some of these issues, ...
متن کاملPedology and plant physiognomies in the Cerrado, Brazil.
This study was carried out in Paraopeba National Reserve. It aims to classify and evaluate the soil of the studied area and to verify the influence of soil attributes on vegetation by testing the following hypotheses: 1) under woodland physiognomies (Cerradão) the soil fertility is higher and the Al content lower; 2) open savanna occurs only in areas with high Al contents. For this purpose, rep...
متن کاملPedology, Precision Agriculture, and the Changing Paradigm of Agricultural Research
1997). New interdisciplinary approaches are needed to improve the understanding of complex interactions bePrecision agriculture (PA) has recently been defined by the U.S. tween multiple factors affecting crop growth and farm National Research Council as a management strategy that uses information technologies to bring data from multiple sources to bear on decision making. Unbiased, systematic a...
متن کاملDIVISION S-5—PEDOLOGY A Functional Approach to Soil Characterization in Support of Precision Agriculture
some. Stermitz et al. (1999) found SSURGO data to be of little value in explaining yield variations. In more Managing soil variability is an integral aspect of precision agriculgeneral terms, the National Research Council (1997) ture (PA). Existing soil databases, however, are found to match few of the requirements for PA. The nature of these requirements and concluded that “current soil survey...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: Nature
سال: 1945
ISSN: 0028-0836,1476-4687
DOI: 10.1038/156258a0