Controlling factors and mapping of linear erosive features in Santa Maria river watershed –RS

IF 0.5 Q4 GEOGRAPHY, PHYSICAL

Revista Brasileira de Geomorfologia Pub Date : 2022-10-01 DOI:10.20502/rbg.v23i4.2151

Carina Petsch, Anderson Augusto Volpato Sccoti, Luís Eduardo de Souza Robaina, Romario Trentin

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引用次数: 2

Abstract

Water erosion is one of the main causes of soil degradation and linear erosion mapping is one of the essential tools for its monitoring. In light of this, the goal from this research is to map the linear erosive features (LEF) of the Santa Maria River Basin (BHRSM), southwest region of RS, and understand which environmental factors are controlling or triggering erosion. In western RS there is a considerable concern associated with erosive processes that occupy large extensions and cause changes in the dynamics of use and changes in the environment. Data on geology, soils, hypsometry, slope, land use, drainage channels and roads were analyzed in a GIS environment. The erosive processes in BHRSM are inherent to the less consolidated sandy substrate, configuring a natural process. The relief energy for the incision of water flows is meaningful, since the LEF are related to moderate slope in portions of medium altitudes. However, anthropogenic action accelerates erosive processes. It is noteworthy that the increase in the area occupied by crops, doubled in the period of 20 years, configuring a new landscape and dynamics for BHRSM, demanding special attention to this region that tends to intensify the erosivy processes

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圣玛利亚河流域线性侵蚀特征的控制因素及制图-RS

水土流失是土壤退化的主要原因之一，线性侵蚀制图是水土流失监测的重要工具之一。鉴于此，本研究的目标是绘制RS西南地区圣玛利亚河流域(BHRSM)的线性侵蚀特征(LEF)，并了解哪些环境因素控制或触发了侵蚀。在西部RS，人们对侵蚀过程有相当大的关注，侵蚀过程占据了大片地区，并导致利用动态和环境变化的变化。在GIS环境下对地质、土壤、地形、坡度、土地利用、排水渠道和道路等数据进行了分析。在BHRSM的侵蚀过程是固有的较少固结砂基，配置一个自然过程。在中等海拔的部分地区，地形起伏与中等坡度有关，因此水流切割的起伏能具有一定的意义。然而，人为活动加速了侵蚀过程。值得注意的是，作物占地面积的增加在20年期间翻了一番，为BHRSM配置了新的景观和动态，需要特别注意这个倾向于加剧侵蚀过程的区域

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

Revista Brasileira de Geomorfologia GEOGRAPHY, PHYSICAL-

CiteScore

1.30

自引率

40.00%

发文量

审稿时长

16 weeks

期刊介绍： The Revista Brasileira de Geomorfologia are focused on research, analysis and application of knowledge for the development of models of large sets of relief; fluvial dynamics; the processes of aspects, such as erosion and mass movements and their impact; survey, assessment and recovery of degraded areas; surveys and assessments of natural resources; thematic mapping and integrated relief; environmental zoning; among other relevant aspects of the land relief on any scale. From a technical and instrumental basis for the development of these studies, studies that use instruments to the survey, the interpretation and generalization of data on various aspects of the Earth''s surface, including the forms of occupation and use (s) company (s) human (s). As well as the use and integration of methods and techniques that enable geo technical and instrumental character important in scientific production and the definition of public policies.