Geodiversity Assessment by Application of Geoinformation Approach (on the Example of Golo Bardo Mountain, Western Bulgaria)

Q4 Social Sciences
V. Nikolova, Elitsa Zareva
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引用次数: 2

Abstract

Geodiversity is considered as a complex indicator of the abiotic environment. On the example of information about Golo Bardo Mountain (Western Bulgaria), the article emphasizes the need to develop methods for quantitative assessment of the geodiversity of an area to minimize the subjective nature of the assessment by defining clear criteria that can be quantified. The complex geodiversity assessment of the investigated area was made based on the analysis of lithology, soils, topographic features and drainage network. The analysis is done in a GIS environment. Topographic settings are analysed on the base of digital elevation model with a cell size of 30 m using Spatial Analyst Tools. The elevation model is used for calculating the terrain roughness, slope gradients and aspects of the slopes. Geological component is evaluated considering the petrographic composition of the area. The variety of the abiotic components is calculated by application of grid method (cell size 1000 x 1000 m), using Focal statistics tool, neighborhood type “Variety”. Fuzzy logic is suggested to be used for comparison of areas located in different regions and with different landscape conditions. The results of the geodiversity assessment show that most of the area of the Golo Bardo mountain has moderate geodiversity index. The method used in the article gives reliable results with minimal subjectivity, that can be used for assessment of the distribution of the geodiversity on a particular area and allow to compare different territorial units. The results obtained in the current study show good correlation between areas with high and moderate geodiversity index, and areas with high biodiversity values. The applied methodology and the visualization of the geodiversity index allow for easy understanding of geodiversity by a wide range of stakeholders, even non-geoscientists, and can be successfully applied in the planning of geotourism activities.
地理信息方法在地质多样性评价中的应用(以保加利亚西部Golo Bardo山为例)
地质多样性被认为是非生物环境的一个复杂指标。以关于Golo Bardo山(保加利亚西部)的资料为例,文章强调需要制定定量评价一个地区地质多样性的方法,通过确定可以量化的明确标准,尽量减少评价的主观性质。在岩性、土壤、地形特征和水系网络分析的基础上,对调查区进行了复杂地质多样性评价。分析是在GIS环境中完成的。利用空间分析工具(Spatial Analyst Tools),以30 m单元格的数字高程模型为基础,分析地形设置。高程模型用于计算地形粗糙度、坡度和坡面。结合该地区的岩石组成对地质成分进行了评价。使用Focal统计工具,邻域类型为“variety”,采用网格法(细胞大小为1000 × 1000 m)计算非生物组分的种类。建议采用模糊逻辑对不同区域、不同景观条件的区域进行比较。地质多样性评价结果表明,戈洛巴尔都山大部分地区的地质多样性指数为中等。本文所采用的方法以最小的主观性给出了可靠的结果,可用于评估特定地区的地质多样性分布,并允许比较不同的领土单位。研究结果表明,高、中等地理多样性指数区与高生物多样性值区具有良好的相关性。地质多样性指数的应用方法和可视化使得广泛的利益相关者,甚至是非地球科学家,都能很容易地理解地质多样性,并且可以成功地应用于地质旅游活动的规划中。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
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来源期刊
Forum Geografic
Forum Geografic Earth and Planetary Sciences-Earth-Surface Processes
CiteScore
0.70
自引率
0.00%
发文量
9
审稿时长
12 weeks
期刊介绍: Founded in 2002, Forum geografic. Studii de geografie şi protecţia mediului aims to publish high quality research in the domains of geography, environment protection and other related domains. It addresses a range of issues, such as geomorphology, pedology, climatology, hydrology, human geography and environment. Its content is directed to a broad audience, including both academics and policymakers. The papers selected for publication in the journal are subject to a review process using references from universities worldwide.
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