Forouzangohar Mohsen, Crossman Neville D, MacEwan Richard J, Wallace D Dugal, Bennett Lauren T
Department of Forest and Ecosystem Science, The University of Melbourne, 4 Water Street, Creswick, VIC 3363, Australia.
Commonwealth Scientific and Industrial Research Organisation (CSIRO) Ecosystem Sciences, PMB 2, Urrbrae, SA 5064, Australia.
ScientificWorldJournal. 2014 Jan 30;2014:483298. doi: 10.1155/2014/483298. eCollection 2014.
Soil degradation has been associated with a lack of adequate consideration of soil ecosystem services. We demonstrate a broadly applicable method for mapping changes in the supply of two priority soil ecosystem services to support decisions about sustainable land-use configurations. We used a landscape-scale study area of 302 km(2) in northern Victoria, south-eastern Australia, which has been cleared for intensive agriculture. Indicators representing priority soil services (soil carbon sequestration and soil water storage) were quantified and mapped under both a current and a future 25-year land-use scenario (the latter including a greater diversity of land uses and increased perennial crops and irrigation). We combined diverse methods, including soil analysis using mid-infrared spectroscopy, soil biophysical modelling, and geostatistical interpolation. Our analysis suggests that the future land-use scenario would increase the landscape-level supply of both services over 25 years. Soil organic carbon content and water storage to 30 cm depth were predicted to increase by about 11% and 22%, respectively. Our service maps revealed the locations of hotspots, as well as potential trade-offs in service supply under new land-use configurations. The study highlights the need to consider diverse land uses in sustainable management of soil services in changing agricultural landscapes.
土壤退化与对土壤生态系统服务缺乏充分考虑有关。我们展示了一种广泛适用的方法，用于绘制两种优先土壤生态系统服务供给的变化情况，以支持有关可持续土地利用配置的决策。我们在澳大利亚东南部维多利亚州北部一个面积为302平方公里的景观尺度研究区域开展了研究，该区域已被开垦用于集约化农业。在当前和未来25年土地利用情景下（后者包括更多样化的土地利用方式以及多年生作物和灌溉面积增加），对代表优先土壤服务的指标（土壤碳固存和土壤储水）进行了量化和制图。我们综合运用了多种方法，包括利用中红外光谱进行土壤分析、土壤生物物理建模和地质统计学插值。我们的分析表明，未来土地利用情景将在25年内增加这两种服务的景观层面供给。预计土壤有机碳含量和30厘米深度的储水量将分别增加约11%和22%。我们的服务地图揭示了热点区域的位置，以及新土地利用配置下服务供给中的潜在权衡。该研究强调了在不断变化的农业景观中，可持续管理土壤服务时考虑多样化土地利用的必要性。
