CAJ | 학술논문

构造条件是控制喀斯特景观发育的基本条件,但对这些控制作用的研究一般都停留在定性描述阶段.为了定量分析构造条件对景观的控制作用,本文利用空间统计分析方法,研究了喀斯特地区构造线性体对谷地和洼地等景观格局的控制作用,研究结果表明,喀斯特地区的谷地或洼地的规模与谷地内构造线性体的长度、数量呈显著的线性正相关关系,即构造线性体的长度越长、相互交叉越多的地方,谷地或洼地的规模也越大.本文的研究也表明构造线性体的研究,不仅可以用来进行区域地质构造格局和成矿预测,且可用以解释和分析地表景观格局的分异.
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Geological tectonism is the precondition of Karst landscape developing, but the controlling effects of tectonism were qualitatively described in most researches other than quantitatively analyzed. Using spatial statistics methods, this paper studies the controlling effect of tectonic lineaments on valley/depression pattern in order to quantitatively analyze the effect of tectonism on Karst landscape. Based on Landsat ETM imagery and tectonic linear system map, valley/depression distribution map are interpreted. Density analysis of tectonic lineaments is used to discover its spatial pattern, correlate analysis and regression analysis are use to study the relationship between the size of valley/depression and total length and quantities of tectonic lineaments in the valley/depression. The result shows that the size of valley/depression landscape in Karst region has positive linear correlativity with the length and quantity of the tectonic lineaments, that is to say, longer the tectonic lineament is, and more intersections are among them, then larger the size of the landscape is. The result also shows that tectonic lineament can not only be used in regional geological tectonic pattern study and deposit forecasting, but also can be used to explain differences among surface landscapes.