The paper gives characteristics of natural and anthropogenic factors responsible for the geoecological situation inside the boundaries of the floodplain-terrace complex of the Tuul river within Ulaanbaatar. Among them, the geological structure and orography (occurrence in the intermontane depression), the specific character of climate-forming (frequent temperature inversions) and hydrological (mainly summer feed by rain water) characteristics, the degree of economic development (high pressure on the central city zone) and population density in administrative districts, etc. have been distinguished. Results obtained from hydro- and geochemical analyses of the territory and published previously (during 2009–2013) were used in the typification of the areas of the floodplain-terrace complex of the Tuul river according to the intensity of anthropogenic impact. An analysis was made of the sources of pollution, primarily of large industrial enterprises and facilities of housing and communal services: combined heat and power plants, industrial, meat-packing and biological plants, the poultry farm, sewage treatment plants, etc. Based on a comparative analysis of average concentrations of the component composition of the river waters and floodplain soils, maximum exceedances of maximum and approximate permissible concentrations of pollutants were determined. Categories of the intensity of anthropogenic impact were identified to vary from decreased to very high. It is shown that, in spite of a high degree of geochemical understanding of the urban territory of Ulaanbaatar, no detailed investigations have been made within the floodplain-terrace complex of the Tuul river. The first-time assessment of the geoecological status of the sites across the study territory determined the migration routes of chemical substances and correlated their occurrence in natural environment with the sources of pollution. According to the intensity of anthropogenic impact, for each site of the floodplain-terrace complex we have suggested environmental and water protection measures. Results of the assessment are presented in the form of cartographic material.

中文翻译：

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评估乌兰巴托（蒙古）境内图尔河漫滩-梯田综合体的地质生态状况

本文给出了导致乌兰巴托境内图尔河漫滩-梯田复合体边界内地质生态状况的自然和人为因素的特征。其中，地质构造和地形（发生在山间坳陷中）、气候形成的具体特征（频繁逆温）和水文（主要是夏季雨水补给）特征、经济发展程度（对山间洼地的高压）区）和行政区人口密度等。从该领土的水文和地球化学分析中获得并先前（2009 年至 2013 年）发表的结果用于根据人为影响的强度对图尔河泛滥平原 - 阶地复合体的区域进行典型化。对污染源进行了分析，主要是大型工业企业和住房和公共服务设施：热电联产厂、工业、肉类包装和生物厂、家禽养殖场、污水处理厂等。对河水和漫滩土壤成分组成的平均浓度进行了比较分析，确定了污染物最大和近似允许浓度的最大超标情况。人为影响强度的类别被确定为从降低到非常高。结果表明，尽管对乌兰巴托市区的地球化学认识程度很高，但尚未对图尔河泛滥平原-阶地复合体进行详细的调查。对整个研究区域内站点的地质生态状况的首次评估确定了化学物质的迁移路线，并将其在自然环境中的发生与污染源联系起来。根据人为影响的强度，我们针对漫滩梯田综合体的每个地点提出了环境和水保护措施。评估结果以制图材料的形式呈现。尽管对乌兰巴托市区的地球化学了解程度很高，但尚未对图尔河泛滥平原-阶地复合体进行详细调查。对整个研究区域内站点的地质生态状况的首次评估确定了化学物质的迁移路线，并将其在自然环境中的发生与污染源联系起来。根据人为影响的强度，我们针对漫滩梯田综合体的每个地点提出了环境和水保护措施。评估结果以制图材料的形式呈现。尽管对乌兰巴托市区的地球化学了解程度很高，但尚未对图尔河泛滥平原-阶地复合体进行详细调查。对整个研究区域内站点的地质生态状况的首次评估确定了化学物质的迁移路线，并将其在自然环境中的发生与污染源联系起来。根据人为影响的强度，我们针对漫滩梯田综合体的每个地点提出了环境和水保护措施。评估结果以制图材料的形式呈现。对整个研究区域内站点的地质生态状况的首次评估确定了化学物质的迁移路线，并将其在自然环境中的发生与污染源联系起来。根据人为影响的强度，我们针对漫滩梯田综合体的每个地点提出了环境和水保护措施。评估结果以制图材料的形式呈现。对整个研究区域内站点的地质生态状况的首次评估确定了化学物质的迁移路线，并将其在自然环境中的发生与污染源联系起来。根据人为影响的强度，我们针对漫滩梯田综合体的每个地点提出了环境和水保护措施。评估结果以制图材料的形式呈现。