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用LI- 6 2 0 0光合仪结合土壤呼吸箱测定了中国暖温带油松林、华北落叶松林、辽东栎林、辽东栎灌木林和稀草荒地夏日的CO2 释放速率 .结果表明 ,林地土壤的CO2 释放速率高于无林地 ,阔叶林地高于针叶林地 ,CO2 释放速率与土壤有机质含量关系密切
The CO 2 release rates of Pinus tabulaeformis, Larix principis-rupprechtii, Quercus liaotungensis, Quercus liaotungensis and shrub-grassland in summer were measured by LI-6200 photosynthesis system and soil respiration box. The results showed that the soil CO2 The rate of CO2 release was higher than that of non-forest land, and the broad-leaved forest was higher than that of coniferous forest. The CO2 release rate was closely related to soil organic matter content