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GroMoPo Metadata for Zhangye Basin model


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Created: Apr 13, 2023 at 2:46 p.m.
Last updated: Apr 13, 2023 at 2:46 p.m.
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Abstract

River basins in or across arid regions have been facing intensified water scarcity and ecological problems, mainly due to the intense irrigated agriculture. Integrating the multiprocesses in hydrological cycle is quite necessary to make reasonable management strategies. In this paper, an integrated multiprocess hydrological model was proposed by coupling river water flow, groundwater flow, canal conveyance, and vadose water flow processes. It was applied to the Zhangye basin of middle Heihe River basin for searching management strategies to restore the ecosystems (i.e., ensure surface runoff into downstream and also recover local groundwater levels). The integrated model was calibrated and validated during 2005-2007 and 2008-2010, respectively. Simulation of groundwater levels (GWLs, 32 wells) and surface runoff both matched well with the observed values, with Nash and Sutcliffe model efficiency > 0.38 and R-2 > 0.57. Then various scenarios were designed with considering five alternatives of different farmland area decrease and three alternatives of groundwater exploitation. Responses of surface runoff and GWLs were predicted for 20 years. Surface runoff change was compared with the water diversion curve, and GWL recovery was also discussed. Results revealed that ecosystems could not be restored with current agricultural area, even shutting down groundwater abstraction for irrigation. A decrease of about 30% of farmland area and using surface river water instead of pumping groundwater for irrigation could satisfy water diversion demand with only a slight GWL decline. Furthermore, the extra irrigation with diverted surface water during nongrowing season could further lead to the recovery of GWLs while without causing negative effects on surface runoff.

Subject Keywords

Coverage

Spatial

Coordinate System/Geographic Projection:
WGS 84 EPSG:4326
Coordinate Units:
Decimal degrees
Place/Area Name:
China
North Latitude
39.7500°
East Longitude
101.0000°
South Latitude
38.5000°
West Longitude
99.0000°

Content

Additional Metadata

Name Value
DOI 10.1029/2018JD028449
Depth N/A
Scale 1 001 - 10 000 km²
Layers 5
Purpose Groundwater resources, Agricultural growth
GroMoPo_ID 2046
IsVerified True
Model Code MODFLOW, SWAP-EPIC
Model Link https://doi.org/10.1029/2018JD028449
Model Time 2005-2010
Model Year 2018
Creator Email kcompare@fsu.edu
Model Country China
Data Available Report/paper only
Developer Email xushengwu@cau.edu.cn
Dominant Geology Unconsolidated sediments
Developer Country Peoples R China
Publication Title An Integrated Hydrological Model for the Restoration of Ecosystems in Arid Regions: Application in Zhangye Basin of the Middle Heihe River Basin, Northwest China
Original Developer No
Additional Information N/A
Integration or Coupling Surface water, Water use, Ecosystem health
Evaluation or Calibration Dynamic water levels, Baseflow
Geologic Data Availability No

How to Cite

GroMoPo, K. Compare (2023). GroMoPo Metadata for Zhangye Basin model, HydroShare, http://www.hydroshare.org/resource/2d5e3da24e5240bba7eab4ccc9ee7bcf

This resource is shared under the Creative Commons Attribution CC BY.

http://creativecommons.org/licenses/by/4.0/
CC-BY

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