Chin J Plan Ecolo ›› 1997, Vol. 21 ›› Issue (5): 416-423.

• Research Articles • Previous Articles     Next Articles

A Preliminary research on the Carbon Storage and CO2 Release of the Tropical Forest Soils in Jianfengling, Hainan Island, China

Wu Zhongmin, Zeng Qingbo, Li Yide, Zhou Guangyi, Chen Bufeng, Du Zhihu and Lin Mingxian   

  • Published:1997-05-10
  • Contact: Guo Zhihua

Abstract: 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 semi-deciduous monsoon forest; the effect of slash-and-burn agriculture on the content of soil carbon and the release of CO2 from soil; and the effect of clear-cutting on the soil carbon storage. The results show that the carbon storage of the main tropical forest soils in Jianfengling was from 97.10t·hm-2 to 119. 54t·’hm-2, and ,in average 102.60t·hm-2 ;in tropical mountain rain forest, the storage of carbon in litter layer was 2.98t·hm-2 ,and CO2 was released at a rate of 33.16t·hm-2·a-1 from the forest land, of which 29.89t·hm-2·a-1 from soil, 3.27 t·hm -2·a-1 from litter layer; in tropical semi-deciduous monsoon forest, CO2 is released with a rate of 10.50 t· hm-2·a-1 from the forest land. The effect of slash-and-burn 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 slash-and-burn agriculture was 37.9 % ,higher than that from the land covered with tropical semi-deciduous monsoon forest. The results also show that clear cutting-caused the decrease in the carbon storage of the forest soil and natural regeneration made the carbon storage recovered.