美国东南部生物群区的碳预算：从源到汇的趋势变化分析。
Carbon budget of the southeastern u.s. Biota: analysis of historical change in trend from source to sink.
出版信息
Science. 1980 Oct 17;210(4467):321-3. doi: 10.1126/science.210.4467.321.
PMID:17796049
Abstract
Documentation of settlement patterns and deforestation in the southeastern United States allows evaluation of regional carbon dynamics since A.D. 1750. From 1750 to 1950, the Southeast was a net source for carbon at an average rate of 0.13 gigaton per year. Only in the past 20 to 30 years has increased productivity of commercial forests resulted in a sink for atmospheric carbon dioxide of 0.07 gigaton per year.
摘要
东南地区有关人口定居模式和森林砍伐的记录，使我们得以评估公元 1750 年以来该地区的碳动态。从 1750 年到 1950 年，东南地区以每年 0.13 千兆吨的平均速率成为碳的净源。只是在过去 20 到 30 年，商业林生产力的提高才使得该地区每年吸收 0.07 千兆吨的大气二氧化碳，成为碳汇。
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