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The search for the most effective forms of functioning of agriculture is the actual direction in modern methods of management of regional economics. The article deals with the development of regional agro-industrial complex as a system, functioning at the expense of integration processes occurring at the level of agricultural sphere of activity. The issues of integration in agriculture are considered from the point of view of forming the stability of balanced regional economy. A distinctive point of our paper is the application of the process approach which allow construct models of farm land use on the example of the Republic of Khakassia. Also we consider realization mechanism of agro-industrial integrative development model by means of various management methods. The choice of the direction of integrative development of agriculture in the regions is justified by the fact that integration ties arising at all levels of agro-industrial complexes (providing, producing, processing) contribute to active formation of sustainable local agricultural markets.

This paper investigates the relationship between spatial distribution of economic activity and local markets of primary sector in panel of Siberian regions over the period 2005-2018, using measure of localization that is Theil index considering two hierarchical levels. Section 2 describes the data and method using geospatial toolset that we have proposed, discusses the construction model for study spatial concentration spillovers between local markets. In Section 3 we study how the processes of urbanization and growth of population density in cities and agricultural development in rural areas affect the formation of local housing markets, and as a consequence, the associated local markets for goods and resources; and the last section concludes. Keywords: economic growth, regional economics, agricultural industry, local markets, spillovers, housing market

Diversification and concentration represent essential two opposite trends in many economic phenomena. Monopoly and monopsony are the natural limits in any market's analysis and describe together the range or the amplitude of offer and demand in economics. A lot of statistical indicators or coefficients, quantifying the diversification versus concentration phenomenon (D vs. C), can reveal a market, optimal or not, full or empty, etc. The paper sheds the light on the relatively little explored concept of economic evolution from concentration to diversification across local markets, providing novel evidence on underlining the dominance of diversification process within regions. This paper has applied statistical structure variable-based methods for assessing spatial differentiation degree within housing construction economic activity in macroregion Siberia for the sample period from 2000:Q1 to 2020:Q4. We present empirical elasticities using the multivariate OLS model that summarize the diversification economic response to the increasing processes of urbanization and localization across the Siberian regions. Some final remarks offer a distinct profile of this Russian macroregion under the influence of demographical variability.