Black Spruce and Soil Carbon Exchance

摘要

Trees arc a major consumer of atmospheric carbon dioxide (CO_2). They score the carbon as organic matter in their tissues and also deposit carbon in the soil. This makes forests important repositories for the CO_2 coming from human fossil fuel burning. In Alaska, ecosystems with black spruce as the major trees species are the most common, followed by white spruce, birch, and mixed spruce stands.