摘要
The effects of soil temperature on soil respiration in natural forest of Picea crassifolia were evaluated by using the Li-6400-09 soil respiration rate apparatus. The results indicated that during the growth phase of P. crassifolia, both the soil respiration and temperature were all in a single apex curve which reached summit in July. Furthermore, the soil respiration was positively correlated to temperatures in the forest and on the ground surface(from the surface to 10 cm depth), and the corrections could be described by linear regression equations. Thirdly, temperature was the major factor that affected the soil aspiration before the month of utmost rainfall. Concerning the correlations between soil temperature and soil aspiration, the surface temperature was positively related to soil aspiration (R^2=0.841 4), and the pertinence reduced with depth adding until the pertinence was minimized at 10 cm depth; In the end, according to air temperature and soil temperature(0, 5 and 10 cm) in Picea crassifolia forest,the index of Q_ 10 was calculated which were 1.55, 1.20,1.42 and 1.65.
The effects of soil temperature on soil respiration in natural forest of Picea crassifolia were evaluated by using the Li-6400-09 soil respiration rate apparatus. The results indicated that during the growth phase of P. crassifolia, both the soil respiration and temperature were all in a single apex curve which reached summit in July. Furthermore, the soil respiration was positively correlated to temperatures in the forest and on the ground surface（from the surface to 10 cm depth）, and the corrections could be described by linear regression equations. Thirdly, temperature was the major factor that affected the soil aspiration before the month of utmost rainfall. Concerning the correlations between soil temperature and soil aspiration, the surface temperature was positively related to soil aspiration （ R^2 = 0.841 4）, and the pertinence reduced with depth adding until the pertinence was minimized at 10 cm depth; In the end, according to air temperature and soil temperature（0, 5 and 10 cm） in Picea crassifolia forest,the index of Q10 was calculated which were 1.55, 1.20,1.42 and 1.65.
出处
《林业科学》
EI
CAS
CSCD
北大核心
2007年第10期117-121,共5页
Scientia Silvae Sinicae
基金
国家自然科学基金面上项目<祁连山土壤呼吸沿海拔梯度变化规律研究>(30271071)
国家重点野外观测实验站建设项目资助
关键词
温度变化
土壤呼吸
青海云杉林
temperature change
soil respiration
Picea crassifolia forest
