地理信息系统在确定垂直地形破碎化中的应用——以科索沃德雷尼察河流域为例

IF 0.7 Q4 GEOGRAPHY, PHYSICAL

Geographia Technica Pub Date : 2020-12-09 DOI:10.21163/gt_2021.161.04

Albert Berila, Florim Isufi

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引用次数: 0

摘要

遥感(数字高程模型)产品和地理信息系统技术的进步使形态计量指数的计算和分析更加准确、有效和节省时间。地形起伏能是表示地形起伏在垂直方向上变化的形态计量参数，代表了给定地形的势能。人工计算形态测量参数耗时长，且容易出现人为的错误，从而得出错误的结论，因此不方便。目前还没有完全自动化的方法来计算这个参数。本文的目的是定义在GIS环境下提取该参数的过程，使用高分辨率(HR) ALOS-PALSAR(先进陆地观测卫星-相控阵型l波段合成孔径雷达)RTC DEM数据，在ArcGIS软件的帮助下，空间分辨率为12.5 m。为了计算该参数，构建了一个由1x1 km单元格组成的网格，每个单元格中有插值点。选择IDW作为最适合的点插值方法。结果表明，德雷尼察河流域的地形能量最大值为328 m/km。57.19%的地表属于地形能量低值和极低值，42.72%的地表属于平均值，只有0.09%的地表属于高值。该参数的极小值和极小值对德雷尼察河流域的高参与表明，总面积正朝着创造平面的方向增加。推导该参数的重要性体现在所获得的数据是定量的(具有数值)，可以验证并在实践中适用于建筑部门，旅游业，空间规划等目的。关键词:GIS，地形能量，ALOS-PALSAR DEM，地质处理，德雷尼察河流域

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APPLICATION OF GIS IN THE DETERMINATION OF VERTICAL RELIEF FRAGMENTATION: A CASE STUDY ON DRENICA RIVER BASIN (KOSOVO)

Advances in Remote Sensing (Digital Elevation Models) products and GIS techniques have made the calculation and analysis of morphometric indices much more accurate, effective, and less timeconsuming. The energy of relief is a morphometric parameter that indicates the vertical variety of relief and represents the potential energy of a given terrain. Calculating morphometric parameters by manual methods is inconvenient because it takes a long time, is subject to mistakes that can be made by humans when extracting these parameters and, consequently leads to wrong conclusions. There is currently no fully automated method to calculate this parameter. The purpose of this paper is to define the procedures for extracting this parameter within a GIS environment using data from high resolution (HR) ALOS-PALSAR (Advanced Land Observing Satellite-Phased Array-Type L-band Synthetic Aperture Radar) Radiometrically Terrain Corrected (RTC) DEM with a spatial resolution of 12.5 m with the help of ArcGIS software. To calculate this parameter, a grid with 1x1 km cells with interpolation points in each cell was constructed. IDW was chosen as the most suitable method for the interpolation of points. Based on the obtained results, the maximum value of relief’s energy for the Drenica River basin reaches 328 m/km. 57.19% of the surface belongs to the low and very low values of relief’s energy, 42.72% belongs to the average values while only 0.09% belongs to the high values. The high participation of very small and small values of this parameter for the Drenica River basin indicates that the total area is increasing towards the creation of flat surfaces. The importance of deriving this parameter is reflected in the fact that the data obtained are quantitative (have numerical value), can be verified and applicable in practice for the purposes of the construction sector, tourism, spatial planning, etc. Key-words: GIS, energy of relief, ALOS-PALSAR DEM, geoprocessing, Drenica River basin.

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来源期刊

Geographia Technica GEOGRAPHY, PHYSICAL-

CiteScore

2.30

自引率

14.30%

发文量

期刊介绍： Geographia Technica is a journal devoted to the publication of all papers on all aspects of the use of technical and quantitative methods in geographical research. It aims at presenting its readers with the latest developments in G.I.S technology, mathematical methods applicable to any field of geography, territorial micro-scalar and laboratory experiments, and the latest developments induced by the measurement techniques to the geographical research. Geographia Technica is dedicated to all those who understand that nowadays every field of geography can only be described by specific numerical values, variables both oftime and space which require the sort of numerical analysis only possible with the aid of technical and quantitative methods offered by powerful computers and dedicated software. Our understanding of Geographia Technica expands the concept of technical methods applied to geography to its broadest sense and for that, papers of different interests such as: G.l.S, Spatial Analysis, Remote Sensing, Cartography or Geostatistics as well as papers which, by promoting the above mentioned directions bring a technical approach in the fields of hydrology, climatology, geomorphology, human geography territorial planning are more than welcomed provided they are of sufficient wide interest and relevance.