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首页> 外文期刊>Regional Environmental Change >Minimal models and agroecological policy at the regional scale: An application to salinity problems in southeastern Australia
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Minimal models and agroecological policy at the regional scale: An application to salinity problems in southeastern Australia

机译:区域规模的最小模型和农业生态政策:在澳大利亚东南部盐度问题中的应用

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摘要

A minimal dynamical systems model that couples agricultural activity, native vegetation, and hydrological processes is developed to explore policy options regarding regional-scale soil and water salinization in southeastern Australia. The analysis suggests that although considerable revegetation is required to restore catchment water balance, the current value of water in uses other than agriculture is too low for revegetation to be economically viable. In contrast, groundwater pumping generates significant short-term gains by preventing soil salinization but is not a viable long-term solution. Thus, effective salinity management policy must include mechanisms to increase the value of water in uses other than irrigated agriculture to achieve sufficient long-term revegetation. These results are robust over a wide range of parameter values and thus provide a basis for policy action in the face of uncertainty about groundwater flow characteristics.
机译:建立了一个将农业活动,本地植被和水文过程耦合起来的最小动力系统模型,以探索有关澳大利亚东南部区域规模土壤和水盐渍化的政策选择。分析表明,尽管需要大量的植被来恢复集水区的水平衡,但除农业以外的其他用途中的水的当前价值太低,以至于植被在经济上不可行。相比之下,地下水抽水通过防止土壤盐碱化而在短期内产生重大收益,但不是可行的长期解决方案。因此,有效的盐分管理政策必须包括增加灌溉农业以外的用水价值的机制,以实现足够的长期植被恢复。这些结果在很大范围的参数值上都是可靠的,因此为面对地下水流量特征的不确定性提供了采取政策行动的基础。

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