摘要
测定了海南岛霸王岭热带山地雨林不同择伐强度经营试验初期土壤 C、N含量及其储量 ,结果表明 :原始热带山地雨林土壤 C、N背景值分别为 10 8.91t· hm-2 、9.58t· hm-2 ,表层 50 cm土壤 C储量占深 10 0 cm土层 C储量的 77.6 % ,相应的 N储量占 73.8% ;30 %、50 %择伐强度经营 5个月后林地土壤 C储量分别比原始林降低 4 .5%和 5.3% ,但 30 %强度经营林地土壤 C/N接近未采伐的原始林。
Based on the contrast experiment of the felling management,the content of nitrogen and organic carbon in soil were measured in a tropical montane rainforest of Bawangling,Hainan Island.The results showed that the organic carbon and nitrogen were 108.91 t·hm -2 and 9.58 t·hm -2 respectively in the soil layer of 100 cm of the virgin forest,and 77.6 % of organic carbon and 73.8% of nitrogen were stored in surface soil of 50 cm.Five months later after felling tropical montane rainforest by the intensity of 30% and 50%,the soil carbon storage declined by 4.5% and 5.3% respectively compared with the previous virgin tropical forest.C/N ratio of the soil on the 30% harvest plot was close to that in the virgin forest.
出处
《林业科学研究》
CSCD
北大核心
2000年第2期123-128,共6页
Forest Research
基金
1998年林业部重点开放实验室--林业遥感与信息技术实验室的海南岛热带天然林永续经营实验区项目!(ITTO PD 1 4 / 92 Rev.2 (F) No.2 )
关键词
采伐经营
热带山地雨林
土壤C储量
土壤N储量
felling management
carbon and nitrogen storage of soil
tropical montane rainforest
Bawangling of Hainan Island