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Development of the Informal Road Network and Its Impact on the Transformation of Taiga Geosystems in the North of Irkutsk Oblast
Geography and Natural Resources Pub Date : 2021-09-10 , DOI: 10.1134/s1875372821020037
I. N. Bilichenko 1 , D. V. Kobylkin 1 , V. V. Kuklina 1 , V. N. Bogdanov 1
Affiliation  

Abstract

We examine the impact of roads on geosystems in territories of new development, where the extraction of hydrocarbons motivates especially intensive improvement of the infrastructure. In this study, we consider motor roads beyond the official network, which have been informally constructed, maintained, or used by various organizations or individuals. We represent types of roads with different forms and regimes of management schematically. As the model area for studying the impact of roads on taiga geosystems, we selected a territory in the north of Irkutsk oblast, in the interfluve of the Kirenga and Khanda rivers; field investigations of the transformation of geosystems were carried out along the informal road from the Vershina Khandy village to the Magistral’nyi settlement. Particular attention was paid to the possible intensification of geomorphological processes as one of the crucial factors for changes in geosystems. A comprehensive analysis of geological, geomorphological, and landscape factors using remote sensing data and field studies made it possible to compile a geomorphological map with identification of dangerous exogenous processes along these roads. Major causes for landscape disturbances were identified, namely degradation and transformation of vegetation cover and changes in the temperature regime of permafrost, which lead to waterlogging and subsidence of soils and, consequently, to the formation of multiple tracks along the roadside and intensified linear erosion.



中文翻译:

伊尔库茨克州北部非正规道路网的发展及其对针叶林地质系统改造的影响

摘要

我们研究了道路对新开发地区地质系统的影响,在这些地区,碳氢化合物的开采激发了基础设施的密集改进。在这项研究中,我们考虑了官方网络之外的机动车路,这些道路是由各种组织或个人非正式地建造、维护或使用的。我们用示意图表示具有不同管理形式和制度的道路类型。作为研究道路对针叶林地质系统影响的模型区,我们选择了伊尔库茨克州北部基伦加河和汗达河交汇处的一块领土;沿从 Vershina Khandy 村到 Magistral'nyi 定居点的非正式道路对地质系统的转变进行了实地调查。特别关注地貌过程可能加剧,这是地质系统变化的关键因素之一。使用遥感数据和实地研究对地质、地貌和景观因素进行综合分析,可以编制一张地貌图,识别这些道路沿线的危险外生过程。确定了景观干扰的主要原因,即植被覆盖的退化和转变以及多年冻土温度状况的变化,导致土壤积水和沉降,从而导致沿路形成多条轨道和加剧线性侵蚀。和景观因素使用遥感数据和实地研究使得可以编制地貌图,识别这些道路沿线的危险外生过程。确定了景观干扰的主要原因,即植被覆盖的退化和转变以及多年冻土温度状况的变化,导致土壤积水和沉降,从而导致沿路形成多条轨道和加剧线性侵蚀。和景观因素使用遥感数据和实地研究使得可以编制地貌图,识别这些道路沿线的危险外生过程。确定了景观干扰的主要原因,即植被覆盖的退化和转变以及多年冻土温度状况的变化,导致土壤积水和沉降,从而导致沿路形成多条轨道和加剧线性侵蚀。

更新日期:2021-09-10
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