高分辨率遥感影像和GIS在田坎系数测算中应用方法的探析

为探讨出一种利用高分辨遥感影像和GIS软件技术进行耕地田坎系数测算的方法,用文献资料法、综合分析法、实证分析法等进行了研究。结果表明,基于遥感影像的覆盖面大、现势性强、周期性短、信息丰富等特点,利用高分辨率遥感影像结合GIS软件技术进行耕地田坎系数测算的方法可行,与实地测算结果相符。运用该方法必须满足影像的高分辨率和准确合理的田坎边界提取2个条件;对于地形地貌变化不大、影像分辨率较高地区有较好的实际利用价值。

Probe on the Method to Make Use of High Resolution Remote Sensing Data and GIS to Measure and Calculate Ridge Coefficient

In the paper method and technology process of measuring and calculating ridge coefficient,which depends on high resolution remote sensing data and GIS is probed through methods of literature review, synthetic analysis and case study, etc. The result indicated that the method and the technical process have features of large coverage, high real-time, up-to-date state, short periodicity and plentiful message. The paper concludes that high resolution remote sensing data and the accurately and reasonably drawing ridge border is feasible. Its consequence is consistent with the consequence from the spots. Its actual use value is good especially to the regions where its terrain diversification isn t large and its remote sensing data has high resolution.