Land Use and Land Cover Digital Data from 1:250,000- and 1:100,000- Scale Maps PDF Download
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Author:
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Category :
Languages : en
Pages : 36
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Author:
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Category :
Languages : en
Pages : 36
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Author: Robert B. McEwen
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Category : Cartography
Languages : en
Pages : 32
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Author: Geological Survey (U.S.)
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Category : Cartography
Languages : en
Pages : 36
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Author: U.S. Department Of The Interior Geological Survey
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Category :
Languages : en
Pages :
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Author: Katherine Fitzpatrick-Lins
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Category : Cartography
Languages : en
Pages : 32
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Author: Association of American Geographers. Remote Sensing Committee
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Category : Geography
Languages : en
Pages : 220
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Author: Alfred E. Hartemink
Publisher: Springer Science & Business Media
ISBN: 1402085923
Category : Nature
Languages : en
Pages : 448
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Signi?cant technological advances have been few and far between in the past approximately one hundred years of soil survey activities. Perhaps one of the most innovative techniques in the history of soil survey was the introduction of aerial photographs as base maps for ?eld mapping, which replaced the conventional base map laboriously prepared by planetable and alidade. Such a relatively simple idea by today’s standards revolutionized soil surveys by vastly increasing the accuracy and ef?ciently. Yet, even this innovative approach did not gain universal acceptance immediately and was hampered by a lack of aerial coverage of the world, funds to cover the costs, and in some cases a reluctance by some soil mappers and cartog- phers to change. Digital Soil Mapping (DSM), which is already being used and tested by groups of dedicated and innovative pedologists, is perhaps the next great advancement in delivering soil survey information. However, like many new technologies, it too has yet to gain universal acceptance and is hampered by ignorance on the part of some pedologists and other scientists. DSM is a spatial soil information system created by numerical models that - count for the spatial and temporal variations of soil properties based on soil - formation and related environmental variables (Lagacheric and McBratney, 2007).
Author: Wafi Al-Fares
Publisher: Springer Science & Business Media
ISBN: 331900624X
Category : Science
Languages : en
Pages : 216
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Although the development of remote sensing techniques focuses greatly on construction of new sensors with higher spatial and spectral resolution, it is advisable to also use data of older sensors (especially, the LANDSAT-mission) when the historical mapping of land use/land cover and monitoring of their dynamics are needed. Using data from LANDSAT missions as well as from Terra (ASTER) Sensors, the authors shows in his book maps of historical land cover changes with a focus on agricultural irrigation projects. The kernel of this study was whether, how and to what extent applying the various remotely sensed data that were used here, would be an effective approach to classify the historical and current land use/land cover, to monitor the dynamics of land use/land cover during the last four decades, to map the development of the irrigation areas, and to classify the major strategic winter- and summer-irrigated agricultural crops in the study area of the Euphrates River Basin.
Author: Stephen C. Guptill
Publisher:
ISBN:
Category : Cartography
Languages : en
Pages : 32
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Author: Katherine Fitzpatrick-Lins
Publisher:
ISBN:
Category :
Languages : en
Pages : 0
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