摘要
本文根据定位观测数据和有关历史资料，研究了海南岛尖峰岭林区主要森林土壤的有机Ｃ储量、热带山地雨林和半落叶季雨林凋落物的Ｃ储量和林地ＣＯ２的排放量、以及“刀耕火种”和砍伐森林等人类活动对土壤Ｃ的影响，对于进一步认识热带林的生态功能，弄清我国温室气体的排放量，正确评价中国森林在全球生物圈Ｃ平衡中的作用，具有一定的参考价值。
Based on the data of located observation in Jianfengling,Hainan Island,China,the following aspects were investigated:the carbon storage of the main tropical forest soils;the release of CO2 from the soils and litter layers under tropical mountain rain forest and tropical semideciduous monsoon forest;the effect of slashandburn agriculture on the content of soil carbon and the release of CO2 from soil;and the effect of clearcutting on the soil carbon storage.The results show that the carbon storage of the main tropical forest soils in Jianfengling was from 9710t·hm-2 to 11954t·hm-2,and,in average 10260t·hm-2;in tropical mountain rain forest,the storage of carbon in litter layer was 298t·hm-2,and CO2 was released at a rate of 3316t·hm-2·a-1 from the forest land,of which 2989t·hm-2·a-1 from soil,327t·hm-2·a-1 from litter layer;in tropical semideciduous monsoon forest,CO2 is released with a rate of 1050t·hm-2·a-1 from the forest land.The effect of slashandburn agriculture on soil carbon was observed even at the depth of 60 cm below soil surface,the release of CO2 from the land under the activity of slashandburn agriculture was 379%,higher than that from the land covered with tropical semideciduous monsoon forest.The results also show that clearcutting caused the decrease in the carbon storage of the forest soil and natural regeneration made the carbon storage recovered.
出处
《植物生态学报》
CAS
CSCD
北大核心
1997年第5期416-423,共8页
Chinese Journal of Plant Ecology
基金
林业部重点项目
国家"八五"攻关项目
关键词
热带森森土壤
CO2排放量
C储量
海南岛尖峰岭
Release of CO2, Carbon storage,Tropical forest soil,Jianfengling,Hainan Island,China
