Checking for non-preferred file/folder path names (may take a long time depending on the number of files/folders) ...
This resource contains some files/folders that have non-preferred characters in their name. Show non-conforming files/folders.
This resource contains content types with files that need to be updated to match with metadata changes. Show content type files that need updating.
Authors: |
|
|
---|---|---|
Owners: |
|
This resource does not have an owner who is an active HydroShare user. Contact CUAHSI (help@cuahsi.org) for information on this resource. |
Type: | Resource | |
Storage: | The size of this resource is 2.1 KB | |
Created: | Feb 08, 2023 at 4:22 a.m. | |
Last updated: | Feb 08, 2023 at 4:23 a.m. | |
Citation: | See how to cite this resource |
Sharing Status: | Public |
---|---|
Views: | 583 |
Downloads: | 223 |
+1 Votes: | Be the first one to this. |
Comments: | No comments (yet) |
Abstract
Climate and anthropogenic changes are expected to reduce renewable groundwater resources and to increase the risks of water scarcity, particularly in arid regions. Understanding current and future risks of water scarcity is vital to make the right water management decision at the right time. This study aims to analyze the impact of both human and climate pressures on groundwater availability in an arid environment: the Regueb basin in Central Tunisia. An integrated approach was used and applied at a monthly time step over a reference period (1976-2005) and a future period (2036-2065). Groundwater resources were assessed using hydrogeological modeling. Irrigation water withdrawals were evaluated based on remote sensing and the CropWat model. Urban water use was estimated from population growth and specific monthly water consumption data. The resulting values were used to compute two indicators (water stress index, groundwater balance) to evaluate water scarcity risks at the 2050 horizon. To assess current and future climate forcing on water resources, three climate scenarios were generated based on simulations from Coupled Model Intercomparison Project Phase 5 (CMIP5) data. A business-as-usual and an adaptation scenario (optimal cropping scenario) were performed by varying the surface areas and the crops grown in the irrigated area. Results show that the average annual water use will increase by 3.8 to 16.4% under climate change only, whereas it will increase by 100% under the business-as-usual scenario. Under the optimal cropping scenario, total water demand will increase by 50%. Water stress index indicates that under the climate change only scenario, water demand should be satisfied by the 2050 horizon, while under the other two scenarios, severe water stress will occur by 2050. The developed framework in this paper aims to fit in arid and semiarid regions in order to evaluate groundwater stress and to assess the efficiency of adaptation strategies. It results in two major recommendations regarding changes in land use and the improvement of groundwater monitoring.
Subject Keywords
Coverage
Spatial
Content
Additional Metadata
Name | Value |
---|---|
DOI | 10.1007/s11027-018-9797-9 |
Depth | 100 |
Scale | 1 001 - 10 000 km² |
Layers | 1 |
Purpose | Groundwater resources |
GroMoPo_ID | 197 |
IsVerified | True |
Model Code | MODFLOW |
Model Link | https://doi.org/10.1007/s11027-018-9797-9 |
Model Time | SS |
Model Year | 2019 |
Model Authors | Guermazi, E; Milano, M; Reynard, E; Zairi, M |
Model Country | Tunisia |
Data Available | Report/paper only |
Developer Email | emna.guermazi@unil.ch |
Dominant Geology | Unsure |
Developer Country | Switzerland; Tunisia |
Publication Title | Impact of climate change and anthropogenic pressure on the groundwater resources in arid environment |
Original Developer | No |
Additional Information | Climate and anthropogenic changes are expected to reduce renewable groundwater resources and to increase the risks of water scarcity, particularly in arid regions. Understanding current and future risks of water scarcity is vital to make the right water management decision at the right time. This study aims to analyze the impact of both human and climate pressures on groundwater availability in an arid environment: the Regueb basin in Central Tunisia. An integrated approach was used and applied at a monthly time step over a reference period (1976–2005) and a future period (2036–2065). Groundwater resources were assessed using hydrogeological modeling |
Integration or Coupling | Water use |
Evaluation or Calibration | Static water levels |
Geologic Data Availability | Unsure |
How to Cite
This resource is shared under the Creative Commons Attribution CC BY.
http://creativecommons.org/licenses/by/4.0/
Comments
There are currently no comments
New Comment