Ecaterina Mocioacă, Alina Satmari, F. Sirbu, P. Urdea
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引用次数: 0
摘要
欧洲大陆和罗马尼亚都被大量的森林覆盖,通常以稀有物种甚至原始森林为代表。罗马尼亚巴纳特地区黑松(Pinus nigra ssp.Banatica)的自然分布仍然是一个悬而未决的空间问题。因此,本研究的主要目的是使用地理信息系统工具,评估多莫格勒和塞内山脉巴纳特黑松建模中形态计量参数的可持续性。一组形态计量参数(海拔、深度、密度、坡度和曲率)、计量经济气候指标(Martonne和FAI)和植被指数(NDVI和SAVI)已从10m DEM、Sentinel 2卫星图像和WorldClim网格数据中得出。对于建模数据,使用了Banat黑松发现区域的等高线,该等高线已通过现场测绘进行了验证。为了本研究的目的,将依赖数据集划分为Banat黑松的存在-不存在,并将数据划分为两类的训练和验证。数据的空间分析使用ArcGIS 10.8.1,统计分析使用R软件。我们得到了四个模型,使用了两到六个自变量。所有模型都使用AUC和R2-McFadden进行了验证,并获得了非常好的分数(分别在0886和0904之间以及0,37和0,42之间)。最重要的预测因子是Martonne干旱指数、斜率和SAVI。基于我们的发现,我们可以得出结论,地貌建模方法可以成功地用于解释边缘环境中树种的空间分布。
A SPATIAL AND QUANTITATIVE ANALYSIS OF THE NATURAL CONDITIONS OF BLACK PINE HABITAT IN BANAT (ROMANIA)
Both the European continent and Romania are occupied by significate forested areas, often represented by rare species or even virgin forests. The natural distribution of the black pine (Pinus nigra ssp. Banatica) in the Banat region of Romania is still a pending spatial problem. Therefore, the main aim of this study is to assess the sustainability of morphometric parameters in modelling of Banat black pine in Domogled and Cernei Mountains, using Geographic Information Systems instruments. A set of morphometric parameters (altitude, depth, density, slope, and curvature), econometric climatic indicators (Martonne and FAI) and Vegetation indexes (NDVI and SAVI) have been derived from a 10m DEM, Sentinel 2 satellite images and WorldClim gridded data. For the modeled data, a contour of the area where the Banat black pine is found, which was validated by in situ mapping, was used. For the purpose of this study the dependent data set was split up into presence – absence of the Banat black pine and also the data was split into training and validation for both categories. For spatial analysis of the data ArcGIS 10.8.1 was used and for the statistical analysis R software was used. We obtained four models that used between two and six independent variables. All models were validated using AUC and R2 McFadden and obtained very good scores (between 0,886 and 0,904 and between 0,37 and 0,42 respectively). The most important predictors were found to be Martonne Aridity Index, slope, and SAVI. Based on our finding we can conclude that a geomorphometric modeling approach can be used, successfully, in explaining the spatial distribution of a tree species in a marginal environment.
期刊介绍:
The publishing of CARPATHIAN JOURNAL of EARTH and ENVIRONMENTAL SCIENCES has started in 2006. The regularity of this magazine is biannual. The magazine will publish scientific works, in international purposes, in different areas of research, such as : geology, geography, environmental sciences, the environmental pollution and protection, environmental chemistry and physic, environmental biodegradation, climatic exchanges, fighting against natural disasters, protected areas, soil degradation, water quality, water supplies, sustainable development.