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Airborne lidar survey of irrigated agricultural landscapes: an application of the slope contrast method

机译:机载灌溉景观的机载激光雷达勘测:坡度对比法的应用

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Irrigated agriculture was central to the economies of many of the world’s best known complex societies. New high-resolution digital elevation models (DEM) derived from remotely sensed lidar data give archaeologists the opportunity to study field systems at a scale not previously possible. Here we describe a method called slope contrast mapping that takes advantage of the dissimilarity between artificial and natural slopes to identify and map discrete features. We use this relatively simple method in our own research to identify complexes of agricultural terraces in the North Kohala district, Hawai’i Island. It has also proved useful for mapping the natural landscape, specifically the extent of flat land between valleys suited for irrigated agriculture.
机译:灌溉农业对于许多世界上最著名的复杂社会的经济至关重要。新的高分辨率数字高程模型(DEM)从遥感的激光雷达数据中得出,为考古学家提供了以前所未有的规模研究野外系统的机会。在这里,我们描述了一种称为“坡度对比映射”的方法,该方法利用了人工坡度和自然坡度之间的差异来识别和绘制离散特征。我们在自己的研究中使用这种相对简单的方法来识别夏威夷岛北部Kohala地区的农业梯田群。事实证明,它对于绘制自然景观非常有用,特别是在适合灌溉农业的山谷之间平整土地的范围。

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