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作 者 ：王雪军,黄国胜,孙玉军*,付晓,韩爱惠

期 刊 ：生态学报 2008年 28卷 10期 页码：4757~4764

关键词：辽宁省；生物量；碳储量；碳密度；碳汇；

Keywords:Liaoning Province, biomass, carbon storage, carbon density, carbon sink,

摘 要 ：利用辽宁省第3次（1984~1988年）至第6次（1999~2003年）4期森林资源清查资料，采用按优势树种（组）建立与材积兼容的生物量模型，测算辽宁省森林植被的生物量。同时，通过植物分子式的方法确定不同树种的含碳量参数，进而对辽宁省的森林植被碳储量进行了估算。结果表明：1984~2000年，辽宁省森林碳储量从1984年的51.82 Tg C增加到2000年的70.30 Tg C，年均增长1.16 Tg C，森林的碳汇作用显著，尤其是在1990~1995年间的碳汇作用最强。在研究时段内，森林平均碳密度为20.61 Mg C/hm2，并呈现出了先上升后下降再上升的变化趋势。但低于全国平均值，这与目前辽宁省的林龄结构幼、中龄林所占比重很大有关。随着林龄结构的改善，森林成熟度不断增加，碳储量和碳密度会相应增加。

Abstract:Based on the national continuous forest inventory data, forest biomass change in Liaoning Province from 1984 to 2000 was estimated using dominant tree species biomass models. Specifically, forest carbon storage was parameterized, via plant molecular formulae, as a function of individual tree species carbon content. The results show that forest carbon storage in Liaoning increased from 51.82 Tg C in 1984 to 70.30 Tg C by 2000 with an annual average accumulation of 1.16 Tg C, indicating a gradual escalation of forest carbon sink. Forest carbon density increased from 1984 to 1990, followed by a decrease from 1990 to 1995 and an increase after 1995. The mean carbon density from 1984 to 2000 was estimated at 2061 Mg C/ hm2, which was significantly lower than the national average. A large proportion of young-aged and low quality of second-growth forests and plantations in Liaoning greatly limit carbon fixation. Forest carbon density will increase as the young-aged forests age and new management initiatives aiming to improve forest health are implemented.

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