Controlling dryland salinity by planting trees in the best hydrogeological setting

Farrington, P.; Salama, R. B.

doi:10.1002/(sici)1099-145x(199609)7:3<183::aid-ldr221>3.0.co;2-y

Cited by 42 publications

(10 citation statements)

References 45 publications

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“…For example, in the Australian Mallee, tree removal for cropping has, in some areas, allowed saline groundwater levels to rise above where they were previously maintained by deep-rooted vegetation, leading to soil salinization that has made large areas of land unsuitable for traditional farming. Meanwhile, local farmers have taken a series of ecological restoration measures, including afforestation (Schofield 1992;Farrington and Salama 1996;Anderies et al 2001;Greiner and Cacho 2001;Briggs and Taws 2003). This suggests that in order to effectively study and optimize the ESs associated with land use, the spatial and temporal scales of assessment must be considered to avoid a series of adverse impacts.…”

Section: Complicated and Multi-scale Effect Of Ecosystem Servicesmentioning

confidence: 99%

Ecosystem services in changing land use

Zhang

et al. 2015

J Soils Sediments

193

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Purpose Ongoing population growth and economic development place increasing demands on the supply of services produced in and by ecosystems. The resulting degradation compromises their ability to continue supporting the provision of these services. As ecosystem services (ESs) are closely related to land use changes, studies linking these topics are critical in the context of better land use planning and to ensure the sustainable provision of ESs. Results The impacts of various land uses on ESs occur in three ways: (1) Major ESs are generated under different land use practices, (2) land use patterns have a significant impact on ESs, and (3) differing intensities of land use may have different impacts on the generation of ESs. As human needs for different ESs vary and are not always consistent, maximizing the use of one ES can lead to a sharp decline in other ESs that may exceed a threshold inducing irreversible change. Therefore, trade-offs between ESs have become challenges that the ecosystem planning and management community must address. Furthermore, other problems (such as a lack of reliable data, inconsistent evaluation methods, and a lack of validated results used in assessments of ESs) compound the difficulty of this challenge. The development of comprehensive assessment models that result from an integrated assessment and scenario analysis of ESs under different land uses can inform ecosystem management options. Future perspectives and conclusions Studies of ESs under different types of land use change must enhance understanding of topics that link ecosystem processes with ESs. Recommended research includes enhancement of the management practices of soil and land, modeling and mapping the spatial flow of ESs, analyzing trade-offs and synergies between multiple ESs, and integrating and optimizing analyses of ESs. By understanding the ecological processes that drive ESs and how these are affected by land use change, we can establish a sustainable balance between multiple uses of different ESs.

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Section: Complicated and Multi-scale Effect Of Ecosystem Servicesmentioning

confidence: 99%

Ecosystem services in changing land use

Zhang

et al. 2015

J Soils Sediments

193

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“…Estimates of the amount of land that must be replanted to perennials to combat rising groundwater levels in a catchment vary considerably due to differences in factors like rainfall, terrain, hydrogeology and land use history. For example Farrington and Salama (1996) estimated that only 2.8% of a specific 300 ha subcatchment within Wallatin Creek needed to be revegetated to remove excess discharge. But estimates for other catchments (with different rainfall and hydrogeology) suggested figures of 25-30% (Bell et al, 1990;Schofield and Bari, 1991;Farrington and Salama, 1996).…”

Section: Salinity As a Drivermentioning

confidence: 93%

“…For example Farrington and Salama (1996) estimated that only 2.8% of a specific 300 ha subcatchment within Wallatin Creek needed to be revegetated to remove excess discharge. But estimates for other catchments (with different rainfall and hydrogeology) suggested figures of 25-30% (Bell et al, 1990;Schofield and Bari, 1991;Farrington and Salama, 1996). Some studies suggest coverages around 40% (AGO-MDBC, 2001) or even as high as 70-80% are required (George et al, 1999), while others claim smaller areas (10-30%) will be effective in some cases (e.g.…”

Section: Salinity As a Drivermentioning

confidence: 99%

“…The revegetation of cleared agricultural lands with woody perennials has therefore been a significant aspect of land use change in Western E-mail address: Patrick.Smith@csiro.au. Australia (WA) since the 1980s, with suggestions that anywhere from 30 to 80% of the landscape may need to be replanted (Bell et al, 1990;Schofield and Bari, 1991;Farrington and Salama, 1996;AGO-MDBC, 2001;George et al, 1999). In addition to salinity mitigation, tree planting on farms has also been promoted for the purposes of land conservation, timber production, wildlife conservation and biofuels (e.g.…”

Section: Introductionmentioning

confidence: 99%

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Who's planting what, where and why – and who's paying?

Smith

2008

Landscape and Urban Planning

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“…Control of groundwater discharge using trees and other perennial species has been the subject of interest for some years (Morris and Thompson 1983;Greenwood 1986;Farrington and Salama 1996). Although substantial progress has answered some basic questions as to which species to plant, where to plant, and how many and at what density to plant, serious constraints exist.…”

Section: Introductionmentioning

confidence: 99%

The water balance and water sources of a Eucalyptus plantation over shallow saline groundwater

2010

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Eucalypt plantations have been trialled in recent years as a control measure for shallow groundwater associated with secondary salinity. Uncertainty still remains as to the potential growth and water use of these plantations; these relate mainly to the problems associated with drought stress and accumulated solutes in the root zone resulting from saline groundwater uptake. This study investigates the water balance and identifies water sources of a 21 year old unirrigated Eucalyptus grandis W. Hill ex Maiden (flooded or rose gum) and E. camaldulensis Dehnh.(river red gum) plantation over shallow saline groundwater in the Shepparton Irrigation Region of northern Victoria, Australia. Water sources used by the plantation were identified using a monthly water balance approach, together with investigations of stable isotopes of water (deuterium and oxygen-18), soil water and chloride. We found these trees to be heavily reliant on rainwater, and derive approximately 15% of their transpiration requirements from saline (10,000 mg l −1 ) groundwater at the capillary fringe. Rainfall at the site is relatively low (465 mm year −1 on average) and groundwater uptake provides a stable water source that leads to a slight extension of the growing period of these trees. There is little potential for recharge, with subsurface water moving into the groundwater depression created by tree water uptake.

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Controlling dryland salinity by planting trees in the best hydrogeological setting

Cited by 42 publications

References 45 publications

Ecosystem services in changing land use

Ecosystem services in changing land use

Who's planting what, where and why – and who's paying?

The water balance and water sources of a Eucalyptus plantation over shallow saline groundwater

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