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Spatial targeting of land rehabilitation: a relational analysis of cropland productivitiy decline in arid Uzbekistan

Dubovyk, Olena and Menz, Gunther and Conrad, Christopher and Lamers, John P.A. and Lee, Alexander and Khamzina, Asia (2013) Spatial targeting of land rehabilitation: a relational analysis of cropland productivitiy decline in arid Uzbekistan. Erdkunde, 67 (2), pp. 167-181. Verlag B.o.s.s Druck und Medien GmbH. ISSN 0014-0015

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Abstract

Irrigated croplands of Central Asia are highly prone to land degradation due to their fragile physical settings and extensive agricultural land use. Current remote-sensing data and spatio-temporal analyses allow for detecting regional trends in a land decline and for relating them to underlying factors which is important for developing mitigation strategies. This study aimed to (1) assess the cropland’s state in the large irrigated agricultural areas in the northern Uzbekistan based on the time series of MODIS NDVI images, (2) relate the degradation trend to its factors including soil quality, terrain, population density and land use, and (3) synthesize the results to provide recommendation on spatial targeting of land rehabilitation measures. An NDVI-based land degradation assessment revealed a significant decline of land productivity across 23.13% (94834.90 ha) of the arable area in the study region. The degraded cropland, located in the areas of high population pressure and characterized by better-quality soils, should be prioritized for rehabilitation measures. For the degraded cropland, found on the poor-quality soils and in the areas of low population density, depending on the severity of degradation, a decision has to be made whether to vacant the land from agriculture or to continue cultivation if the latter is an economically viable option.

Item URL in elib:https://elib.dlr.de/88496/
Document Type:Article
Title:Spatial targeting of land rehabilitation: a relational analysis of cropland productivitiy decline in arid Uzbekistan
Authors:
AuthorsInstitution or Email of AuthorsAuthors ORCID iD
Dubovyk, Olenaodubovyk (at) uni-bonn.deUNSPECIFIED
Menz, Guntherg.menz (at) geographie.uni-bonn.deUNSPECIFIED
Conrad, Christopherchristopher.conrad (at) uni-wuerzburg.deUNSPECIFIED
Lamers, John P.A.j.lamers (at) uni-bonn.deUNSPECIFIED
Lee, Alexanderli_sasha (at) mail.ruUNSPECIFIED
Khamzina, AsiaCenter for Development Research (ZEF)UNSPECIFIED
Date:2013
Journal or Publication Title:Erdkunde
Refereed publication:Yes
Open Access:No
Gold Open Access:No
In SCOPUS:Yes
In ISI Web of Science:Yes
Volume:67
Page Range:pp. 167-181
Publisher:Verlag B.o.s.s Druck und Medien GmbH
ISSN:0014-0015
Status:Published
Keywords:land degradation, rehabilitation of degraded land, trend analysis, MODIS, NDVI, Central Asia
HGF - Research field:Aeronautics, Space and Transport
HGF - Program:Space
HGF - Program Themes:Earth Observation
DLR - Research area:Raumfahrt
DLR - Program:R EO - Erdbeobachtung
DLR - Research theme (Project):R - Vorhaben Geowissenschaftl. Fernerkundungs- und GIS-Verfahren
Location: Oberpfaffenhofen
Institutes and Institutions:German Remote Sensing Data Center
Deposited By: Wöhrl, Monika
Deposited On:13 Aug 2014 12:09
Last Modified:08 Mar 2018 18:25

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