Biological productivity and annual carbon deposition in some forest formations of the Southern Sikhote-Alin
Alexey S. Kasatkin
Federal Scientific Center for East Asia Terrestrial Biodiversity FEB RAS, Vladivostok, Russia
Biological productivity (phytomass, NPP and SNPP) is one of the most important features of forest ecosystems, which is used to assess the carbon deposition capacity of forests, ecological monitoring, sustainable forest management, modeling of forest productivity in relation to global changes, studying the structure and biodiversity of forest cover. Today estimates of the biological productivity of forests do not correspond to carbon deposition rates that makes predictions of regional and global environmental situation impossible. The reasons for this situation are the absence of sufficiently reliable basis of empirical data about the biological productivity of forests and inaccurate baseline information on forest inventory and biological productivity estimates. One of the main objectives of our research is to obtain empirical data on the biological productivity of forests. In the period from 2013 to 2016, 10 PSP were established in the Ussuriisk forests in the 9 most common forest types. 140 model trees of 20 species (including 4 conifers species) were sampled. The phytomass, NPP, SNPP and annual carbon deposition data were obtained and analyzed. Extrapolating the obtained information using forest inventory materials and the state forest register to larger areas by using multiple regression equations, it is possible to obtain reliable information on carbon deposition in the phytomass of tree species and the basic formations of coniferous-broadleaf forests of the Southern Sikhote-Alin.