Анализ ассортимента древесно-кустарниковых растений, используемых в озеленении г. Саратова

The article deals with the history of green space expansion in the city of Saratov based on comparative analysis of the range of green spaces for 1966, 1998, and 2017. The authors note the expansion tendency of the wood species range applied in city landscaping due to the inclusion of invasive plants and decorative forms of trees and bushes. The results of a comprehensive assessment of the current state of the range of plants at the sites of urban landscaping and long-term observations of them allowed determining the types and varieties of trees, shrubs, and lianas, which had successfully adapted to the urban environment states. The authors have developed a broad range of plants, which includes 138 names of tree and bush species recommended for application on landscaping sites of various categories in Saratov.El artículo considera la historia de la construcción verde en la ciudad de Saratov, se realiza un análisis comparativo de la variedad de espacios verdes para 1966, 1998 y 2017. Existe una tendencia a expandir la variedad de especies utilizadas en el paisajismo de la ciudad debido a la inclusión de introductores y formas decorativas de árboles y arbustos en ella. Los resultados de una evaluación exhaustiva del estado actual del surtido de plantas en las instalaciones de paisajismo de la ciudad y las observaciones a largo plazo de ellos permitieron determinar los tipos y variedades de especies de árboles, arbustos y enredaderas que se adaptaron con éxito a las condiciones del entorno urbano. Sobre la base de los datos obtenidos, se desarrolló una variedad de 138 nombres de especies de arbustos arbóreos recomendados para su uso en objetos de varias categorías de espacios verdes de la ciudad de Saratov.В статье рассмотрена история зеленого строительства в г. Саратове, выполнен сравнительный анализ ассортимента зеленых насаждений за 1966, 1998 и 2017 годы. Отмечена тенденция расширения ассортимента применяемых в озеленении города пород за счет включения в него интродуцентов и декоративных форм деревьев и кустарников. Результаты комплексной оценки современного состояния ассортимента растений на объектах озеленения города и многолетние наблюдения за ними позволили определить виды и сорта древесных, кустарниковых пород и лиан, которые успешно адаптировались к условиям городской среды. На основании полученных данных разработан ассортимент из 138 наименований древесно-кустарниковых видов, рекомендованных к применению на объектах различных категорий зеленых насаждений г. Саратова

Assortment of shrubs for different categories of green plants in settlements located in a dry region

The article is devoted to the study of the assortment of shrub species in various categories of green plants in settlements located in the arid region, using the example of the cities of Saratov and Engels. In practice, recommendations for choosing an assortment are used when choosing plants for landscaping. There are currently several sources for these recommendations. To determine the species diversity of shrubs and compare with the recommended assortment, authors examined the plantations of general use in the cities of Saratov and Engels. The predominant species of shrubs and their condition have been identified. The density of species growth on landscaping objects has been analyzed

Rock burst hazard assessment of apatite mines on Kola Peninsula by means of local acoustic emission method

Various acoustic emission (AE) parameters are used to characterize fracture process in rocks. The conventional statistical values are, for example, AE activity, b-factor, and distribution of energy. In order to map AE events the location analysis is used. There are also of interest in seismic analysis such kinematic parameters as corner frequency, seismic moment. To describe spatial pattern of hypocenter distribution a so called correlation integral is applied. In this work we apply spectral-correlation analysis to quantify each AE waveform with energy-correlation values. To study the behavior of spectral parameters during fracturing we carried out a series of AE measurements in the areas of extreme mining pressure in the PhosAgro apatite mines. For data acquisition purpose we use a device Prognoz-L which has been developed in the Mining Institute of Khabarovsk, Russia, for local stress monitoring

Recreation potentials of urban forest parks

Recreational stress is a determining factor in the sustainability of forest ecosystems. Objects of research - green spaces of the forest park 51 ° 33’14 “N; 45 ° 55’34” E (green zone of the city of Saratov, “Kumysnaya Polyana”). Purpose: identification and optimization of the recreational potential. The forest park is 4504 hectares. The largest indicators of bulk density (1.35 g / cm3) were revealed in the service and recreation areas. For a separate section of the forest park, it is possible to increase the indicators of the recreational potential and capacity by 12.89 and 89.1%. The recreation potential of the forest park is from 65 to 85 percent. Modernization of the zoning of the forest park, accomplishment of improvement works through sanitary and landscape felling, optimization of the road network will lead to an increase in the recreational capacity of leisure to 117.4 thousand people. Landscaping techniques have been developed

Assessment and control of geodynamical risks under the conditions of a rock-bump hazardous complex deposit

Research has been carried out to study the peculiarities of rockbump hazards and induced seismic manifestations at the Nikolaevskoe deposit, and their close correlation with the tectonic structure of the rock massif has been established. In order to strengthen control over the rock-bump hazard in the TN-3 high-angle fault, in 2019 the observation network was expanded and continuous seismoacoustic monitoring of the rock mass at the deep levels of Nikolaevskoe deposit was organized. Monitoring data is verified by local geoacoustic method using the portable device “Prognoz L”. The results of the monitoring revealed major acoustically active zone with the main amount of seismic and acoustic events recorded during the last 5 years and occurring dynamic rock pressure manifestations. Nikolaevskoe deposit was the site of execution of the industrial experiment on regional discharge of a potentially rock-bump hazardous section of a shock blasting massif

Development of Mathematical Algorithm for Seismoacoustic Signals Identification Using Local Geomechanical Control Means

This article reviews a creating of algorithm for the automatic seismoacoustic signals identification. The developed algorithm will be part of the software multi-channel device. The useful signals detection problem from the geomechanical state data stream is solved by determining the moments of impulses beginning and ending. The initial moment of time is determined using fast and slow exponential moving averages, used to smooth out data variations and the characteristic signal-to-noise ratio. The moving average method is used in conjunction with an adaptive threshold, which improves the accuracy of determining the initial moment and takes into account the noise. The last time instant of the useful signal is detected with the help of a cumulative envelope. The time of impulse beginning detection is calculated and terminated when the threshold value is reached. The developed mathematical algorithm allows to identify seismoacoustic signals with sufficient accuracy and is an undemanding hardware resource of the device that allows using it in real time

Algorithm for calculating hazard areas of a rock massif based on geomechanical data

Based on the analysis of existing approaches in the prediction of dynamic phenomena of rock pressure, it was established that the basis of most methods is the kinetic concept of the destruction of solids. A team of authors from the Mining Institute of the Far Eastern Branch of Russian Academy of Sciences has developed a method of geomechanical monitoring of a rock massif state, which consists of analyzing the dynamics of the acoustic active zones formation and predicting the impact hazard based on the established regularities of changes in the geoacoustic activity. This paper proposes an automated method for identifying focal zones, based on preliminary exclusion of background radiation using a non-parametric density estimation method, identifying seismoacoustic active zones by means of probabilistic cluster analysis and parameterizing focal zones by selecting a characteristic ellipsoid

The research of burst hazard of the rocks massif of Rasvumchorr mineral deposit according to seismoacoustic monitoring

Results of geomechanical research of burst hazard of the rock mass of Rasvumchorr mineral deposit with application of measuring complex are presented in the paper. Measuring complex includes the automated seismoacoustic system of rock pressure control "Prognoz-ADS" and the local geoacoustic device "Prognoz L". The measuring complex was developed in Mining Institute of the Far Eastern branch of Russian Academy of Sciences. Measurements and the analysis of parameters of the seismoacoustic events reflecting geomechanical processes in the developed massif is the basis for estimation of rock massif burst hazard