Abstract

The results of studies of floodplain landscapes of the Don tributaries in its middle reaches are presented. The rivers under consideration are the Khoper, Medveditsa, Ilovlya, and Chir, as well as the tributaries of the Khoper―the Kosarka and Buzuluk. At the preliminary office stage, hydrological data on water levels and spring flood discharges over 1988–2018 were analyzed, and the inundation areas were determined by satellite images. In July–October 2019, field landscape-ecological studies were carried out, including instrumental profiling, soil and geobotanic studies, and evaluation of the depth to groundwater table. The floodplains of the Middle Don tributaries were found to have formed under the conditions of much higher water abundance in the rivers. The probability of the spring inundation of the floodplain does not exceed 10%. Under such conditions, cereal grass communities form on the high and, partly, middle floodplain, their composition being close to the zonal steppe vegetation of nearby areas. Some species in the vegetation indicate to a minor salinity of soils.

中文翻译：

---

顿河中部河流漫滩形成中的现今水文和水文地质规律

摘要

给出了唐河支流中游平原洪泛区景观的研究结果。正在考虑的河流有科珀河，梅德韦迪察河，伊洛夫里亚河和奇尔河，以及科珀河的支流科萨尔卡河和布祖鲁克河。在初步办公室阶段，分析了1988-2018年期间的水位和春季洪水流量的水文数据，并通过卫星图像确定了淹没区域。2019年7月至10月，进行了现场景观生态学研究，包括仪器分析，土壤和地质植物学研究以及对地下水位深度的评估。发现中唐支流的洪泛区是在河流中水含量高得多的条件下形成的。洪泛区春季淹没的可能性不超过10％。在这种条件下，谷物草群落形成在较高的（部分为中洪泛区）上，其组成接近附近地区的带状草原植被。植被中的某些物种表明土壤盐分较低。