The growth of the real estate market is considered one of the leading economic indicators of city development. The pressure for new sites for the construction of buildings and houses causes significant and severe socio-environmental impacts. The municipality of Nova Lima is conurbated with Belo Horizonte, the capital of Minas Gerais State, Brazil. In recent decades, the municipality of Nova Lima has been attracting real estate developers of luxury housing because of its favored location in a valley surrounded by mountain ranges with stunning landscapes. This study aimed to evaluate the emergence and evolution of erosive processes in a region of high real estate pressure in the municipality of Nova Lima, Minas Gerais State, Brazil. The study site is considered an area of environmental protection, belonging to the “Cardoso” river basin, a tributary of the “das Velhas” river. The images of the area were obtained by an “unmanned aerial vehicle,” with flights performed in 2019. Orthomosaic, digital surface and elevation models were obtained from these images. Historical series of satellite imagery provided by Google Earth were also used, as well as a survey of secondary data on the use and soil occupation of the region. The intense expansion of the real estate sector in metropolitan areas put pressure on environmental preservation in peri-urban areas. In this study, erosion processes and gullies were observed as a result of the construction of luxury residences. Construction residues of the buildings were disposed on the floor of a valley, burying the source of the “Estrangulado” Stream. The appearance of gullies is attributed to a combination of factors such as the removal of vegetation cover, the irregular disposal of construction waste in an environmental protection area, an insufficient drainage system for rainwater, and the lack of water collection and treatment of domestic wastewater. Over the years, the dimensions of gullies have increased and can cause damage to the buildings there. Also, the soil and sediment washed away by the runoff will affect the volume and quality of water in a watershed that is essential for supplying the metropolitan region of Belo Horizonte, Minas Gerais, Brazil.

中文翻译：

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巴西米纳斯吉拉斯州新利马环境保护区的城市扩张和侵蚀过程

房地产市场的增长被认为是城市发展的领先经济指标之一。建造建筑物和房屋的新场地的压力造成了重大而严重的社会环境影响。新利马市与巴西米纳斯吉拉斯州首府贝洛奥里藏特相连。近几十年来，新利马市一直吸引着豪华住宅的房地产开发商，因为它位于山谷中，周围环绕着山脉，风景优美。本研究旨在评估巴西米纳斯吉拉斯州新利马市房地产压力高的地区侵蚀过程的出现和演变。研究地点被认为是一个环境保护区域，属于“Cardoso”河流域，“das Velhas”河的支流。该地区的图像是由“无人驾驶飞行器”获得的，并于 2019 年进行了飞行。从这些图像中获得了正射镶嵌、数字表面和高程模型。还使用了谷歌地球提供的一系列历史卫星图像，以及对该地区使用和土壤占用的二手数据的调查。大都市地区房地产业的急剧扩张给城郊地区的环境保护带来了压力。在这项研究中，由于建造豪华住宅而观察到侵蚀过程和沟壑。建筑物的建筑残渣被丢弃在山谷的地板上，掩埋了“埃斯特兰古拉多”溪流的源头。沟壑的出现是由于植被被清除、环保区内建筑垃圾处理不规范、雨水排水系统不完善、生活污水没有集水和处理等综合作用。多年来，沟渠的尺寸不断增加，可能会对那里的建筑物造成损坏。此外，被径流冲走的土壤和沉积物将影响流域中水的体积和质量，这对于供应巴西米纳斯吉拉斯州贝洛奥里藏特大都市区至关重要。沟渠的尺寸已经增加，可能对那里的建筑物造成损坏。此外，被径流冲走的土壤和沉积物将影响流域中水的体积和质量，这对于供应巴西米纳斯吉拉斯州贝洛奥里藏特大都市区至关重要。沟渠的尺寸已经增加，可能对那里的建筑物造成损坏。此外，被径流冲走的土壤和沉积物将影响流域中水的体积和质量，这对于供应巴西米纳斯吉拉斯州贝洛奥里藏特大都市区至关重要。