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Contemporary Problems of Ecology

, Volume 7, Issue 2, pp 158–169 | Cite as

Dynamics of structure and biological productivity of post-fire larch forests in the Northern Mongolia

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Abstract

Peculiarities of forming and growth of post-fire larch (Larix sibirica Ledeb.) forests at the southern range of their distribution in the Northern Mongolia were studied. Regularities of the stand structure and dynamics of biological productivity are analyzed and discussed in the paper. It has been proved that the structure of the organic mass of the post-fire herb-carex type larch tree stands at the southern border of forest vegetation distribution is closely related to their biometric indices as-age, density, and productivity. In comparison with tree stands from the other areas of forest vegetation, the total phytomass stock of larch phytocenoses appropriately increases by zonal gradient from forest-tundra border to the Transbaikalian southern taiga and northern regions of Mongolia. Regeneration of forest cover by edificator and formation of the original larch coenopopulation is a positive trend from an environmental point of view, because the Siberian larch in young and middle-age period in the area has a sufficiently high growth energy and rate of phytomass production, with more than twice exceeding mature forests in fixed carbon of the atmosphere and has positive values of carbon balance and total destruction of organic matter by the “input-output” parameters.

Keywords

post-fire larch forests dynamics structure biological productivity Northern Mongolia 

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© Pleiades Publishing, Ltd. 2014

Authors and Affiliations

  1. 1.Sukachev Institute of Forest, Siberian BranchRussian Academy of SciencesKrasnoyarskRussia
  2. 2.Institute of BotanyMongolian Academy of SciencesUlaanbaatar 51Mongolia

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