CREATION OF URBAN BIOGEOCENOSES ON DISTURBED LANDS: PROBLEMS AND SOLUTIONS

Abstract

This work is devoted to the issue of reclaiming disturbed lands in urban conditions, forming new biogeocenoses on urban areas as rapidly as possible, solving the problems of creating viable green spaces based on the example of new building areas in St. Petersburg. Two main factors of influence are identified: “administrative” – low professionalism of modern managers at various levels, low educational and professional level of employees of design companies and landscape gardening companies, and, as a result, a violation of agricultural practices for growing ground cover and tree-shrub plants and a lack of proper control over the results of their activities and “soil-biological” – a newly created techno-soil with a thin humus horizon, the composition of which is difficult to predict and which has extremely low fertility. The following solutions are proposed: creating and using standardized formulation of organo-mineral compositions based on municipal sewage sludge in order to obtain a sufficient amount of material for the formation of a fertile soil layer on disturbed lands, creating regional unified compositions of grass mixtures, carefully selecting tree species for different growing conditions, applying inexpensive and reliable biopreparations to launch the natural mechanism of increasing the fertility of the emerging soil, using organo-mineral, instead of chemical, fertilizers in the process of growing plants. As an example, the effect of the biological preparation “Bioways” and the organo-mineral fertilizer “Turmaks” was studied, the effectiveness of using them in the growth processes of seedlings and developing the generative system of prickly spruce Picea pungens Engelm was shown. The relevance of the work is confirmed by the demand for effective measures to promote the creation of sustainable green spaces, the accelerated formation of biogeocenoses in large urban agglomerations (megacities).

Keywords

• restoration of disturbed lands
• urban soil
• green spaces
• st. petersburg
• biological preparations
• prickly spruce