期刊论文

中文

中南林业科技大学学报

1673-923X

2004

24

1

1-5

10.3969/j.issn.1673-923X.2004.01.001

国家科技部基础研究重大项目(2102) 国家科技部重点野外科学观测试验站(2000—076) 国家林业局重点项目(2001—07、2001—29) 中南林学院青年资金项目资助.

本校为第一机构

多年定位观测的数据对比分析结果表明:湖南会同22年生杉木林采伐前,林地土壤(0～60 cm)层中的C储量为160.38 t?hm-2,100%皆伐后一年林地土壤(0～60 cm)层中的C储量损失率为35.00%,二年后损失率为44.65%,三年后损失率为43.93%;与对照林林地土壤相比,50%间伐和100%皆伐后三年,林地土壤(0～60 cm)层中的C储量损失率分别为16.14%和45.15%;4种不同经营方式的采伐迹地土壤(0～60 cm)层中的C储量有明显的差异,大小次序为:已郁闭杉木林林地(108.20 t?hm-2)＞农用后撂荒地(92.68 t?hm-2)＞经济林栽培地(85.80 t?hm-2)＞自然更新采伐迹地(80.29 t?hm-2).未烧地土壤(0～45 cm)层中C储量为73.36 t?hm-2,比火...

Based on the data collected from located observation in successive years, comparative analyses were made in Chinese fir plantation at Huitong, Hunan. Results show that before deforestation, carbon storage of forest-land soil (0～60 cm) amounts to 160.38 t.hm~(-2) in the 22-year-old Chinese fir plantation; that one year after 100% of clear cut, carbon storage in the deforested-land soil (0～60 cm) loses 35.00%, two years, 44.65% and three years, 43.93%; that compared with the control standing forest, three years after 50% of thinning and 100% of...