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The consequences of land use change on nutrient exports: a regional scale assessment in south-west Victoria, Australia

机译:土地用途变化对养分出口的影响:澳大利亚西南维多利亚州的区域规模评估

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摘要

Estimation of nutrient load production based on multi-temporal remotely sensed land use data for the Glenelg-Hopkins region in south-west Victoria, Australia, is discussed. Changes in land use were mapped using archived Landsat data and computerised classification techniques. Land use change has been rapid in recent history with 16% of the region transformed in the last 22 years. Total nitrogen and phosphorus loads were estimated using an export coefficient model. The analysis demonstrates an increase in modelled nitrogen and phosphorus loadings from 1980 to 2002. Whilst such increases were suspected from past anecdotal and ad-hoc evidence, our modelling estimated the magnitude of such increases and thus demonstrated the enormous potential of using remote sensing and GIS for monitoring regional scale environmental processes.
机译:讨论了基于多时态遥感土地利用数据的澳大利亚西南维多利亚州格莱内尔格-霍普金斯地区的养分负荷生产估算。使用存档的Landsat数据和计算机分类技术来绘制土地利用变化图。在最近的历史中,土地用途的变化非常迅速,过去22年中该地区有16%的土地发生了变化。使用出口系数模型估算了总氮和磷负荷。该分析表明,从1980年到2002年,模拟的氮和磷负荷量有所增加。尽管从过去的轶事和临时证据中可以怀疑这种增加,但是我们的模型估计了这种增加的幅度,因此证明了使用遥感和GIS的巨大潜力用于监视区域规模的环境过程。

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