elib
DLR-Header
DLR-Logo -> http://www.dlr.de
DLR Portal Home | Imprint | Contact | Deutsch
Fontsize: [-] Text [+]

Potentials of RapidEye time series for improved classification of crop rotations in heterogeneous agricultural landscapes: Experiences from irrigation systems in Central Asia

Conrad, Christopher and Machwitz, Miriam and Schorcht, Gunther and Löw, Fabian and Fritsch, Sebastian and Dech, Stefan (2011) Potentials of RapidEye time series for improved classification of crop rotations in heterogeneous agricultural landscapes: Experiences from irrigation systems in Central Asia. In: Proceedings of SPIE, 8174. SPIE Remote Sensing 2011, 19.-22. Sep. 2011, Prague, Czech Republic. ISBN 9780819488015.

Full text not available from this repository.

Official URL: http://spie.org/x648.html?product_id=898345

Abstract

In Central Asia, more than eight Million ha of agricultural land are under irrigation. But severe degradation problems and unreliable water distribution have caused declining yields during the past decades. Reliable and area-wide information about crops can be seen as important step to elaborate options for sustainable land and water management. Experiences from RapidEye classifications of crop in Central Asia are exemplarily shown during a classification of eight crop classes including three rotations with winter wheat, cotton, rice, and fallow land in the Khorezm region of Uzbekistan covering 230,000 ha of irrigated land. A random forest generated by using 1215 field samples was applied to multitemporal RapidEye data acquired during the vegetation period 2010. But RapidEye coverage varied and did not allow for generating temporally consistent mosaics covering the entire region. To classify all 55,188 agricultural parcels in the region three classification zones were classified separately. The zoning allowed for including at least three observation periods into classification. Overall accuracy exceeded 85 % for all classification zones. Highest accuracies of 87.4 % were achieved by including five spatiotemporal composites of RapidEye. Class-wise accuracy assessments showed the usefulness of selecting time steps which represent relevant phenological phases of the vegetation period. The presented approach can support regional crop inventory. Accurate classification results in early stages of the cropping season permit recalculation of crop water demands and reallocation of irrigation water. The high temporal and spatial resolution of RapidEye can be concluded highly beneficial for agricultural land use classifications in entire Central Asia.

Document Type:Conference or Workshop Item (Speech)
Title:Potentials of RapidEye time series for improved classification of crop rotations in heterogeneous agricultural landscapes: Experiences from irrigation systems in Central Asia
Authors:
AuthorsInstitution or Email of Authors
Conrad, Christopherchristopher.conrad@uni-wuerzburg.de
Machwitz, MiriamUNSPECIFIED
Schorcht, Gunthergunther.schorcht@uni-wuerzburg.de
Löw, Fabianfabian.loew@uni-wuerzburg.de
Fritsch, Sebastiansebastian.fritsch@uni-wuerzburg.de
Dech, Stefanstefan.dech@dlr.de
Date:2011
Journal or Publication Title:Proceedings of SPIE
Refereed publication:No
In SCOPUS:No
In ISI Web of Science:No
Volume:8174
Editors:
EditorsEmail
Neale , Christopher UNSPECIFIED
Maltese , Antonino UNSPECIFIED
Series Name:Remote Sensing for Agriculture, Ecosystems, and Hydrology
ISBN:9780819488015
Status:Published
Keywords:Remote Sensing, Central Asia, Rapid Eye, Accuracy, Agriculture
Event Title:SPIE Remote Sensing 2011
Event Location:Prague, Czech Republic
Event Type:international Conference
Event Dates:19.-22. Sep. 2011
HGF - Research field:Aeronautics, Space and Transport (old)
HGF - Program:Space (old)
HGF - Program Themes:W EO - Erdbeobachtung
DLR - Research area:Space
DLR - Program:W EO - Erdbeobachtung
DLR - Research theme (Project):W - Vorhaben Geowissenschaftl. Fernerkundungs- und GIS-Verfahren (old)
Location: Oberpfaffenhofen
Institutes and Institutions:German Remote Sensing Data Center
Deposited By: Carina Kübert
Deposited On:02 Nov 2011 10:47
Last Modified:02 Nov 2011 10:47

Repository Staff Only: item control page

Browse
Search
Help & Contact
Informationen
electronic library is running on EPrints 3.3.12
Copyright © 2008-2012 German Aerospace Center (DLR). All rights reserved.