CAJ | 학술논문

利用涡度相关技术对安徽寿县冬小麦/水稻农田碳通量进行连续观测，结果显示：日变化呈典型的U型曲线，峰值均出现在11∶00左右；CO2的月均日变化差异显著，6、10月以正值为主，农田生态系统表现为碳源，4、8月对CO2的吸收最为强烈；春、夏季CO2通量的日变化也呈现出典型的U型曲线，但是秋、冬季的碳通量日较差较小。CO2通量各季的日总量表现为春季>夏季>冬季>秋季，四季均为碳汇，春夏两季的碳汇能力明显强于秋冬季。
이용와도상관기술대안휘수현동소맥/수도농전탄통량진행련속관측，결과현시：일변화정전형적U형곡선，봉치균출현재11∶00좌우；CO2적월균일변화차이현저，6、10월이정치위주，농전생태계통표현위탄원，4、8월대CO2적흡수최위강렬；춘、하계CO2통량적일변화야정현출전형적U형곡선，단시추、동계적탄통량일교차교소。CO2통량각계적일총량표현위춘계>하계>동계>추계，사계균위탄회，춘하량계적탄회능력명현강우추동계。
In this paper,using the eddy covariance technique to make a continuous observation on the carbon flux of wheat and rice in Shouxian,Anhui province.The result show that the daily variation presents a typical U-shaped curve,and the peak appears at 11:00am around.The monthly average daily variation of CO2 is significant-ly different.The CO2 flux is upright in June and October,and the farmland ecosystem performance as the carbon source,the absorption of CO2 is the strongest in April and August. The CO2 flux’diurnal variation of the spring and summer also presents the typical U-shaped curve,but the diurnal range of carbon flux is smaller in autumn and winter. Daily amount of CO2 flux in each season presents as follow:spring >summer >winter >fall.The four season are all carbon sinks,and the carbon sink capacity of spring and summer is stronger than the fall and win-ter.