期刊论文

中文

中南林业科技大学学报

1673-923X

2012

32

3

104-108

10.14067/j.cnki.1673-923x.2012.03.010

国家重点基础研究发展计划“973”计划专题“湖南省典型人工林碳氮水通量空间分异规律及对气候变化响应模拟预测”部分研究内容（2010CB833504-X）；

本校为第一机构

用静态箱采集气样，气相色谱法测定CO_2浓度，研究湘中丘陵区4种森林类型土壤CO_2排放量，分析森林类型、季节、土壤温度和含水量对土壤CO_2排放量的影响。结果表明：4种森林类型月均土壤CO_2排放量的最大值(350.476 mg.m~(-2)h~(-1))和最小值(34.731 mg.m~(-2)h~(-1))分别出现在7月份和2月份的杉木林，各森林类型的月均土壤CO_2排放量之间的差异性显著(p

Soil CO2 efflux in four forests in hilly areas of central Hunan,China,were investigated by using static chamber to sample released gas from soil for chemical analysis with gas chromatography.The influences of forest type,seasonal dynamics and soil moisture on soil CO2 efflux were investigated.The results show that the average rates of soil CO2 efflux in four forests was the highest for Choerospondias axillaries forest（157.99 mg·m^-2h^-1）,immediate for Cunninghamia lanceolata plantation（151.25 mg·m^-2h^-1） and Cyclobalanopsis glauca forest...