Responses of Soil and Ecosystem Respiration to Soil Temperature and Moisture of A poplar Plantation in Northern China
Ecosystem respiration (ER) and soil respiration (SR) are responding to soil moisture and temperature in different ways due to biological and physical processes operating within an ecosystem. We examined daily and seasonal ecosystem respiration and soil respiration of a poplar plantation located in the temperate climate in northern China by using the eddy covariance and soil respiration chamber methodologies respectively during the entire growing seasons in 2007 and 2009. We analyzed the different responses of ecosystem respiration and soil respiration to soil temperature and soil moisture. The soil respiration of the growing seasons was 519.29 and 495.69 gCmV in 2007 and 2009, comparing to ecosystem respiration of the growing season was 701.42 and 594.70gCm-2y-1 in the two years. On an average, the sum of soil respiration and ecosystem respiration in growing season in the wetter year was larger than that in the drier year. Soil temperature was the main drive factor of soil respiration during 2 years. Ecosystem respiration was more affected by soil temperature in the wetter year comparing to that it was more controlled by soil moisture in the drier year.
soil respiration ecosystem respiration eddy covariance method poplar plantation forestry Ecosystem
Fang Xianrui ZhangZhiqiang
Beijing Forestry University Beijing, China
国际会议
昆明
英文
382-385
2010-10-17（万方平台首次上网日期，不代表论文的发表时间）