The Effects of Rain Pulse on Soil Respiration
The paper introduces a simple method to measure the transient respiration responses of forest soil to rain pulses under laboratory conditions. The measurement system is composed of a sprinkler,closed static chamber Li-6400 portable photosynthesis system (Li-COR Inc.,Lincoln,Nebraska,USA) and the connecting conduits. We collected soil samples In the floor of broad-leaved/Korean pine forest in Changbai Mountain and measured soil respiration rate with this system. The transient respiration responses of the soil samples with different soil water contents to three rainfall treatments were tested The results showed that there were a rapid increase of soil respiration and a subsequent decline after reaching a maximum following rain pulse. Soil respiration rates after rain pulses were 2-6 times higher than that before the rain event. Errors of soil respiration rates caused by the measurement system were also discussed.
chamber method1 rain pulse2 soil respiration3 soil water content4
Zhang Xiaojing Guan Dexin Wu Jiabing Wang Anzhi Yuan Fenghui Jin Changjie
Institute of Applied Ecology,Chinese Academy of Sciences,Shenyang 110016 (China)Graduate School of C Institute of Applied Ecology,Chinese Academy of Sciences,Shenyang 110016 (China)
国际会议
南宁
英文
318-323
2010-12-10（万方平台首次上网日期，不代表论文的发表时间）