Results of investigations of usage the environmental friendly technology for the air purification in non-industrial buildings Konstantin Vorobjev, Alexandr Chusov, Natalia Politaeva, Mihail Romanov, Alexander Shchur Bio Web of Conferences, 2023 Ability of plants to purify contaminated indoor air using vertical hardware-biological complex of recirculating type was studied. Laboratory experiments were made for assessing capability to purify indoor air against different particle size of contaminated air by cigarettes. Comparative analysis of the data obtained with the use of Tradescantia fluminensis Vell and Sansevieria trifasciata was shown. According to the results of laboratory tests and diagnostic status of the air, making the following options by location of vertical hardware-biological complex of recirculating type.
Indoor air quality assessment on polygons for solid municipal waste for microbial contamination and a method of its cleaning K. V. Vorobyev, A. N. Chusov, N. A. Politaeva, A. V. Shchur Povolzhskii Ekologicheskii Zhurnal, 2023 Landfill biogas contains large amounts of toxic and harmful impurities and may be a source of microbiological contamination of both the complex municipal waste landfill itself and adjacent territories. This paper uses modern biotechnologies designed to protect the environment, to study the quantitative and qualitative composition of biogas for harmful factors, as well as for harmful substance removal from biogas. An assessment was made of air purification in the premises near landfills and adjacent territories using green plantations and a biological system based on an apparatus-biological complex for purification from microbiological contamination. The data obtained in our laboratory studies show that such apparatus-biological complexes can reduce the negative influence on the personnel and workers at operative points and the inhabitants of adjacent territories by air purification.
Monitoring selective logging with Landsat satellite imagery reveals that protected forests in Western Siberia experience greater harvest than non-protected forests ALEXANDER SHCHUR, EUGENIA BRAGINA, ANIKA SIEBER, ANNA M. PIDGEON, VOLKER C. RADELOFF Environmental Conservation, 2017 SUMMARYWhen timber harvesting is an important source of local income and forest resources are declining, even forests that are designated as protected areas may become vulnerable. Therefore, regular monitoring of forest disturbance is necessary to enforce the protection of forest ecosystems. However, mapping forest disturbance with satellite imagery can be complicated if the majority of the harvesting is selective logging and not clearcuts. Our goal was to map both selective logging and clearcuts within and outside of protected areas in Western Siberia, a region with a highly developed timber industry. Combining summer and winter imagery allowed us to accurately estimate not only clearcuts, but also selective logging. Winter Landsat images substantially improved our classification and resulted in a highly accurate forest disturbance map (97.5% overall accuracy and 86% user accuracy for the rarest class, clearcuts). Selective logging and stripcuts were the dominant disturbance types, accounting for 96.3% of all forest disturbances, versus 3.7% for clearcuts. The total annual forest disturbance rate (i.e. disturbance rate for clearcuts, stripcuts and selective logging together) was 0.53%, but total forest disturbance within protected areas was greater than in non-protected forest (0.66% versus 0.50%, respectively), and so was the annual rate of selective logging (i.e. without clearcuts, 0.37% versus 0.25%, respectively). Our results highlight that monitoring only clearcuts without assessing selective logging might result in significant underestimation of forest disturbance. Also, when timber harvesting is important for the local economy and when protected areas have valuable timber resources that have already been depleted elsewhere, then additional protection may be necessary in order to maintain natural forests within protected areas. We suggest that this is the situation in our study area in Western Siberia right now and is likely the situation in many other parts of the globe as well.
