寒温带兴安落叶松林土壤呼吸特征  

Soil Respiration of Larix gmelinii Forest in Cool Temperate Zone

作　　者：张慧东[1] 周梅[1] 赵鹏武[1] 包青春[1] 海龙[1] 

机构地区：[1]内蒙古农业大学

出　　处：《林业科学》2008年第9期142-145,共4页Scientia Silvae Sinicae

基　　金：国家林业局“十五”重点项目(2001-01);国家自然科学基金重大项目(30590381-03);内蒙古农业大学博士科研启动基金

摘　　要：The soil respiration rate was measured with an IRGA in the natural Larix gmelinii forest of the Northern Great Xing’anling Mountain in the cool temperate zone.The environmental factors were recorded using the weather equipment.The soil respiration showed obvious diurnal variation and a total 706 gC·m-2 was released during the plant growth period(May.1th～Oct.31th).The soil respiration rate was influenced significantly by soil tempeture in this zone,and a significant postive correlation was found between soil respiration rates and soil tempetures in 10 cm depth（r=0.879 5）.However the soil respiration was not significantly influenced by the soil moisture.Furthmore,there was a negative relationship between the soil respiration rate and air CO2 contiontration of the air in forest（r=-0.426 1）.The results from the experiment can provide the basical materials for the calculation of carbon flux in the northern cool temperate zone of China.The soil respiration rate was measured with an IRGA in the natural Larix gmelinii forest of the Northern Great Xing＇anling Mountain in the cool temperate zone. The environmental factors were recorded using the weather equipment. The soil respiration showed obvious diurnal variation and a total 706 gC· m^- 2 was released during the plant growth period （ May. 1^th ～Oct. 31^th）. The soil respiration rate was influenced significantly by soil tempeture in this zone, and a significant postive correlation was found between soil respiration rates and soil tempetures in 10 cm depth （ r = 0. 879 5 ）. However the soil respiration was not significantly influenced by the soil moisture. Furthmore, there was a negative relationship between the soil respiration rate and air CO2 contiontration of the air in forest （ r = - 0.426 1）. The results from the experiment can provide the basical materials for the calculation of carbon flux in the northern cool temperate zone of China.

关 键 词：土壤呼吸 土壤温度 兴安落叶松林 大兴安岭 

分 类 号：S718.55[农业科学—林学]