NDLI: Dryland Salinity in the North Stirling Land Conservation District, Western Australia: Simulation and Management Options

Please wait, while we are loading the content...

Dryland Salinity in the North Stirling Land Conservation District, Western Australia: Simulation and Management Options

Content Provider	Springer Nature Link
Author	Gomboso, J. Ghassemi, F. Appleyard, S.J.
Copyright Year	1997
Abstract	The North Stirling Land Conservation District consists of approximately 100,000 hectares north of the Stirling Range National Park, Western Australia. Clearing of land for agriculture occurred in the 1960's and early 1970's. The groundwater is highly saline, and, since clearing, the water table has risen by as much as 12 m; it is now generally less than 3 m below ground level throughout the area. The rise in groundwater levels following clearing and the use of crops and pastures requiring low water use have caused dramatic secondary salinisation over a short period of time. Groundwater flow was simulated with models of steady-state and transient groundwater flow. By incorporating economic simulations with the calibrated transient hydrogeological model, estimates of the expected gross margin losses were made. Three salinity-management strategies were simulated. Results indicate that 1) under the ‘do-nothing’ strategy, future gross margins are expected to decline; 2) under the agronomic strategy, the rate of water-table rise would be reduced and foregone agricultural production losses would be less than the ‘do-nothing’ strategy; and 3) under the agroforestry strategy, the water table is expected to decline in the long term, which would increase future agricultural production levels and, hence, profitability. La zone de protection du territoire du nord de Stirling s'étend sur environ 100.000 ha, dans la partie nord du Parc National du massif de Stirling (Australie occidentale). Le défrichage pour la création d'exploitations agricoles a été entrepris dans les années soixante et soixante-dix. Les eaux souterraines présentent une très forte salinité; depuis le défrichage, la nappe, qui est remontée de 12 m par entroits, est maintenant en général à moins de plantes et de pâturages faibles consommateurs d'eau, a provoqué une salinisation secondaire dramatique pendant une courte période. Les écoulements souterrains ont été simulés à l'aide de modèles d'éclulement en régime permanent et en gégime transitoire. L'introduction de simulations économiques dans le modèle hydrogéologique calibré en régime transitoire a permis d'estimer les pertes sur les marges brutes. Trois stratégies de gestion de la salinité ont été simulées. Les résultats obtenus prévoient que 1) avec la stratégie du « laisser-faire », les futures marges brutes devraient diminuer, 2) avec une stratégie d'agriculture, le taux de remontée de la nappe devrait diminuer et les pertes passées de production agricole devraient être inférieures aux pertes dans la stratégie du « laisser-faire »; et 3) avec une stratégie agro-forestière, on s'attend à un abaissement des niveaux de la nappe à long terme, ce qui devrait provoquer une augmentation des niveaux à venir de la production agricole et, par conséquent, du rendement économique. El North Stirling Land Conservation District cubre unas 100.000 hectáreas al norte del Parque Nacional de Stirling Range, en Australia Occidental. La limpieza y desbroce del terreno para uso agrícola se llevó a cabo durante los años 60 y principios de los 70. El agua subterránea en la zona es altamente salina, y, desde que se produjo el desbroce, el nivel freático ha experimentado ascensos de hasta 12 m. En la actualidad, el nivel se encuentra a menos de 3 m de profundidad en varias zonas. Este ascenso de niveles y el uso de cultivos y pastos que requieren pequeñas cantidades de agua ha causado una intensa sobresalinización en un corto periodo de tiempo. Se utilizaron modelos estacionarios y transitorios para simular el flujo de agua subterránea. Incorporando simulaciones económicas al modelo hidrogeológico transitorio calibrado, se hizo una estimación del márgen de pérdidas bruto. Se simularon tres estrategias de gestión de la salinidad. Los resultados indican que 1) con la estrategia de “no hacer nada”, los márgenes brutos futuros tenderán a bajar; 2) con la estrategia agronómica, el ritmo de incremento de niveles freáticos se reducirá, y las pérdidas en la producción agrícola serán menores que en el caso anterior; y 3) con la estrategia agroforesteral, se espera que los niveles freáticos acaben descendiendo a la larga, lo que incrementará la productividad agrícola en el futuro y, por tanto, los beneficios.
Starting Page	80
Ending Page	97
Page Count	18
File Format	PDF
ISSN	14312174
Journal	Hydrogeology Journal
Volume Number	5
Issue Number	1
e-ISSN	14350157
Language	English
Publisher	Springer-Verlag
Publisher Date	2012-11-20
Publisher Institution	International Association of Hydrogeologists
Publisher Place	Berlin, Heidelberg
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Hydrogeology Geology Waste Water Technology Water Pollution Control Water Management Aquatic Pollution
Content Type	Text
Resource Type	Article
Subject	Earth and Planetary Sciences Water Science and Technology

Sl.	Authority	Responsibilities	Communication Details
1	Ministry of Education (GoI), Department of Higher Education	Sanctioning Authority	https://www.education.gov.in/ict-initiatives
2	Indian Institute of Technology Kharagpur	Host Institute of the Project: The host institute of the project is responsible for providing infrastructure support and hosting the project	https://www.iitkgp.ac.in
3	National Digital Library of India Office, Indian Institute of Technology Kharagpur	The administrative and infrastructural headquarters of the project	Dr. B. Sutradhar bsutra@ndl.gov.in
4	Project PI / Joint PI	Principal Investigator and Joint Principal Investigators of the project	Dr. B. Sutradhar bsutra@ndl.gov.in Prof. Saswat Chakrabarti will be added soon
5	Website/Portal (Helpdesk)	Queries regarding NDLI and its services	support@ndl.gov.in
6	Contents and Copyright Issues	Queries related to content curation and copyright issues	content@ndl.gov.in
7	National Digital Library of India Club (NDLI Club)	Queries related to NDLI Club formation, support, user awareness program, seminar/symposium, collaboration, social media, promotion, and outreach	clubsupport@ndl.gov.in
8	Digital Preservation Centre (DPC)	Assistance with digitizing and archiving copyright-free printed books	dpc@ndl.gov.in
9	IDR Setup or Support	Queries related to establishment and support of Institutional Digital Repository (IDR) and IDR workshops	idr@ndl.gov.in

Mapping Dryland-Salinity Hazard, Northern Territory, Australia

Dryland salinity processes within the discharge zone of a local groundwater system, southeastern Australia

Salinity Threatens the Viability of Agriculture and Ecosystems in Western Australia

Overview of Factors Leading to Dryland Salinity and its Potential Hazard In New South Wales, Australia

Groundwater salt accessions to land in the Queensland Murray-Darling Basin, Australia

The Relationship Between Bulk Electrical Conductivity and Dryland Salinity in the Narrabri Formation at Breeza, Liverpool Plains, New South Wales, Australia

The Role of Debris-Flow Deposits in the Development of Dryland Salinity in the Yass River Catchment, New South Wales, Australia

Estimating impacts of changed land use on recharge: review of modelling and other approaches appropriate for management of dryland salinity

Groundwater-level response to land-use change and the implications for salinity management in the West Moorabool River catchment, Victoria, Australia

Dryland Salinity in the North Stirling Land Conservation District, Western Australia: Simulation and Management Options

Similar Documents

Mapping Dryland-Salinity Hazard, Northern Territory, Australia

Dryland salinity processes within the discharge zone of a local groundwater system, southeastern Australia

Salinity Threatens the Viability of Agriculture and Ecosystems in Western Australia

Overview of Factors Leading to Dryland Salinity and its Potential Hazard In New South Wales, Australia

Groundwater salt accessions to land in the Queensland Murray-Darling Basin, Australia

The Relationship Between Bulk Electrical Conductivity and Dryland Salinity in the Narrabri Formation at Breeza, Liverpool Plains, New South Wales, Australia

The Role of Debris-Flow Deposits in the Development of Dryland Salinity in the Yass River Catchment, New South Wales, Australia

Estimating impacts of changed land use on recharge: review of modelling and other approaches appropriate for management of dryland salinity

Groundwater-level response to land-use change and the implications for salinity management in the West Moorabool River catchment, Victoria, Australia

Dryland Salinity in the North Stirling Land Conservation District, Western Australia: Simulation and Management Options