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Spatio-temporal supply demand of surface water for agroforestry planning in saline landscape of the lower Amudarya Basin

Kumar, Navneet and Khamzina, Asia and Tischbein, Bernhard and Knöfel, Patrick and Conrad, Christopher and Lamers, John (2019) Spatio-temporal supply demand of surface water for agroforestry planning in saline landscape of the lower Amudarya Basin. Journal of Arid Environments, 162, pp. 53-61. Elsevier. DOI: 10.1016/j.jaridenv.2018.11.007 ISSN 0140-1963

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Official URL: http://www.sciencedirect.com/science/article/pii/S0140196318319773

Abstract

Global warming is predicted to increase water scarcity in many drylands worldwide. In Central Asia, one of the most intensively irrigated dryland agricultural regions, climate change is likely to exacerbate the regional water supply–demand gaps, particularly in downstream areas. The withdrawal of degraded, highly salinized croplands from irrigated farming in favor of tree plantations that effectively utilize saline groundwater may contribute to irrigation water saving, which can generate valuable ecosystem services and provide rural income opportunities. To facilitate the spatial planning of afforestation in the lower Amudarya region, we developed a hydrological algorithm to map the spatio-temporal pattern of water supply–demand. The resulting map, based on seven-year continuous data of cropping pattern and corresponding irrigation dynamics, rainfall, and evapotranspiration at 250 m resolution, revealed the overly irrigated areas from which excess water can be redistributed to water-stressed areas. Furthermore, combining this information with spatial data on marginally productive croplands and with water requirement of tree plantations showed that 67% of these croplands are characterized by water availability sufficient for the introduction of salt-tolerant tree species. The algorithm developed is of potential use for defining the feasibility of introducing alternative (tree) crops with known growth and water use characteristics.

Item URL in elib:https://elib.dlr.de/125680/
Document Type:Article
Title:Spatio-temporal supply demand of surface water for agroforestry planning in saline landscape of the lower Amudarya Basin
Authors:
AuthorsInstitution or Email of AuthorsAuthors ORCID iD
Kumar, NavneetUNSPECIFIEDUNSPECIFIED
Khamzina, AsiaCenter for Development Research (ZEF)UNSPECIFIED
Tischbein, BernhardCenter for Development Research (ZEF)UNSPECIFIED
Knöfel, PatrickUNSPECIFIEDUNSPECIFIED
Conrad, ChristopherChristopher.Conrad (at) uni-wuerzburg.deUNSPECIFIED
Lamers, JohnCenter for Development Research (ZEF)UNSPECIFIED
Date:2019
Journal or Publication Title:Journal of Arid Environments
Refereed publication:Yes
Open Access:Yes
Gold Open Access:No
In SCOPUS:Yes
In ISI Web of Science:Yes
Volume:162
DOI :10.1016/j.jaridenv.2018.11.007
Page Range:pp. 53-61
Publisher:Elsevier
ISSN:0140-1963
Status:Published
Keywords:Afforestation, Aral Sea basin, Canal Irrigation, Evapotranspiration, Land Degradation, Water Balance
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:08 Jan 2019 10:16
Last Modified:09 Dec 2019 09:55

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