Publishing House SB RAS:

Publishing House SB RAS:

Address of the Publishing House SB RAS:
Morskoy pr. 2, 630090 Novosibirsk, Russia



Advanced Search

Contemporary Problems of Ecology

2005 year, number 4

Transformation of Carbon Assimilation in Pine Tree Stands Affected by Industrial Emissions

T. A. MIKHAILOVA, N. S. BEREZHNAYA, G. G. SUVOROVA, O. V. IGNATYEVA, O. V. SHERGINA

Abstract

A new method has been developed that permits carrying out a cartographic estimation of carbon losses in forest ecosystems affected by atmospheric industrial emissions. Changes of carbon assimilations were considered in association with parameters characterizing the degree of physiological deterioration of trees and the level of their contamination with toxic emissions. Representative indicators have been distinguished that reflect the condition of the assimilatory phytomass of the tree stands, and a diagnostic scale for estimation of decrease of carbon assimilation in deteriorated plantations without a direct recording of photosynthesis parameters has been developed. For a model territory of the Prebaikalian region with an area of more than 1 million ha, a schematic map has been drawn up according to which carbon losses in pine tree stands amount to 20 to 60 % of the background level. In verification of the developed approach, a high degree of correspondence of calculated data to direct measurements of the decrease of carbon assimilation in tree stands weakened by industrial emissions has been demonstrated.