Quantification of carbon pools and fluxes in relation to land-use in sub-boreal British Columbia.

摘要

This study's objective was to assess carbon (C) pools and fluxes in an even-aged mature forest, a regenerating forest, and a pasture in sub-Boreal British Columbia near Hixon, and in the Aleza Lake Research Forest. Net flux of carbon dioxide (CO₂) for the pasture was measured by micrometeorological methods in 2001 for the growing season and belowground respiration was measured for the non-growing season, resulting in a net flux of 32.1 ± 0.1 g C m−2. In an 8-year-old regenerating clearcut net CO ₂ flux was measured over the growing season using micrometeorological methods, resulting in a net sink of −0.05 ± 0.004 g C m −2. Measurement of total C pools showed that the mature forest was the highest, the 18-year-old pasture was second highest, and the 18-year-old regenerating forest was lowest. Analysis of an orthophoto with a land type classifier program showed that the area surrounding the Hixon study sites was 66% mature forest, 16% regenerating forest, and 13% pasture.