欢迎访问林业科学,今天是

›› 1997, Vol. 33 ›› Issue (zk2): 94-103.

• 论文及研究报告 • 上一篇    下一篇

杉木人工林林地CO2释放量的研究

方晰 田大伦   

  1. 中南林学院 株洲412006
  • 收稿日期:1900-01-01 修回日期:1900-01-01 出版日期:1997-11-25 发布日期:1997-11-25

A STUDY ON THE FOREST SOlL CO2 RELEASE RATES IN CHINESE FIR PLANTATIONS

Fang Xi,Tian Dalun   

  1. Central—South Forestry College Zhuzhou412006
  • Received:1900-01-01 Revised:1900-01-01 Online:1997-11-25 Published:1997-11-25

摘要: 对湖南省会同县杉木人工林3种不同林地类型(未成林造林地、已郁闭林地、采伐迹地)的林地CO2释放量的动态研究表明:①未成林造林地、采伐迹地CO2释放量都明显高于已郁闭林地,未成林造林地略高于采伐迹地;②林地CO2释放量与各层土壤温度、湿度在一定范围内呈线性正相关,与土壤C/N比也有明显的线性正相关;③林地CO2释放量昼夜变化有一定规律性;④不同处理方式(火烧地、未烧地)的林地CO2释放量在一定时间范围内有明显差异。

关键词: 杉木人工林, 林地CO2释放量, 温室气体

Abstract: The study on the soil C02 release from three land types of Chinese fir plantation in Huitong,Hunan showed that:①The soil C02 release from the afforested land or the def-forested land is evidently higer than that of the closed woodland,the soil C02 release from the afforested land is somewhat higher than that of the deforested land;②The soil C02 release is positive linear correlation with the soil temperature and soil moisture at a certain range,and also with the soil C/N ratio;③The soil C02 release change with a regular circadian rhythm;④The soil C02 release from the defforested lands with differ-ent treatments is evident difference in a certain time lapse.

Key words: Chinese fir, Soil C02 release rate, Greenhouse gas