湖南长防林一期工程碳汇量评价研究

Praise research of the carbon collecting volume in the first period of the Protection Forest for the Yangtze River Program in Hunan

通过对湖南长防林一期工程碳汇量的评价研究,发现:①随着林龄的增长,各林分生物量增量及碳汇量增量逐渐增大;②随着林龄的增长,各林分之间生物量及碳汇量的增长速度差异较大,增长速度最大的常绿落叶阔叶混交林是增长速度最小的经济林的11.8倍。各林分生物量及碳汇量的增长速度为:常绿落叶阔叶混交林>松木林分>针阔混交林>杉木林分>低质低效林改造>柏木林>封山育林>经济林;③1991～2002年湖南长防林一期工程总碳汇量为1012.86t。

Based on the praise research of the carbon collecting volume in the first period the Protection Forest for the Yangtze River Program in Hunan Province. The results showed: with the growth of the age of stand, the stand living volume and the carbon collecting volume were increased, but there were differences in the speed of the increase in the different stands. The highest carbon collecting speed was in an evergreen and deciduous broadleaf mixed forest's increased speed was in the lowest speed economic forest's 11.8 times. The increased speed of the stands living and carbon volumes were: evergreen and deciduous broadleaf mixed forest>pine standing forest>softwood and broadleaf mixed forest>China fir stand>low quality and benefit improvement forest>cypress forest>forest in forbidden cutting mountain>economic forest. And the carbon collection volume of the first period of the protection forest for the Yangtze River program in Hunan province during 1991～2002 was 10.1286 million t.