华北土石山区植物群落土壤呼吸特性及其影响因子  

The Characteristics of Soil Respiration in the Plant Communities of Earth-rock Mountain Region in Northern China

作　　者：钱登峰[1] 任德智[1] 马和平[1] 周金星[2] 

机构地区：[1]西藏农牧学院,西藏林芝860000 [2]中国林业科学研究院荒漠化研究所,北京100091

出　　处：《湖北农业科学》2014年第10期2283-2286,共4页Hubei Agricultural Sciences

基　　金：国家自然科学基金项目(41061033);北京市科技计划项目(z11100066111001)

摘　　要：采用红外气体(IRGA)法对华北土石山区植物群落土壤呼吸速率、土壤温度和湿度进行测定。结果表明,土壤呼吸速率日变化呈单峰曲线,最大值在15:00左右,最低值在日出前后;季节变化比较明显,土壤呼吸速率夏季最高,冬季最低;呼吸速率大小受群落类型、土壤温度、土壤湿度等因子影响。Soil respiration of typical plant communities of earth-rock mountain region in Northern China was studied with IRGA. The results showed that the diurnal dynamic of soil respiration appeared as a single peaked curve with the peak presenting at about 15：00. The highest value of soil respiration was in summer, while the lowest was in winter. Community types, soil temperature and soil humidity were the main factors affecting the soil respiration.

关 键 词：植物群落 土壤呼吸速率 红外气体分析 

分 类 号：S714.2[农业科学—林学]