We found a match
Your institution may have access to this item. Find your institution then sign in to continue.
- Title
Energy and mass exchange and the productivity of main Siberian ecosystems (from Eddy covariance measurements). 2. carbon exchange and productivity.
- Authors
Tchebakova, N.; Vygodskaya, N.; Arneth, A.; Marchesini, L.; Kurbatova, Yu.; Parfenova, E.; Valentini, R.; Verkhovets, S.; Vaganov, E.; Schulze, E.-D.
- Abstract
Direct measurements of CO fluxes by the eddy covariance method have demonstrated that the examined middle-taiga pine forest, raised bog, true steppe, and southern tundra along the Yenisei meridian (~90° E) are carbon sinks of different capacities according to annual output. The tundra acts as a carbon sink starting from June; forest and bog, from May; and steppe, from the end of April. In transitional seasons and winter, the ecosystems are a weak source of carbon; this commences from September in the tundra, from October in the forest and bog, and from November in the steppe. The photosynthetic productivity of forest and steppe ecosystems, amounting to 480-530 g C/(m year), exceeds by 2-2.5 times that of bogs and tundras, 200-220 g C/(m year). The relationships between the heat balance structure and CO exchange are shown. Possible feedback of carbon exchange between the ecosystems and atmosphere as a result of climate warming in the region are assessed.
- Subjects
ECOSYSTEMS; CARBON monoxide; ECOSYSTEM management; LIGHT elements; CARBON foams
- Publication
Biology Bulletin, 2015, Vol 42, Issue 6, p579
- ISSN
1062-3590
- Publication type
Article
- DOI
10.1134/S1062359015660024