2011 EJRNL PP Wang Zhan 1.pdf)u
Terbatas Irwan Sofiyan
» ITB
Terbatas Irwan Sofiyan
» ITB
Net ecosystem carbon dioxide exchange (NEE) above a desert steppe in Inner Mongolia was measured
with eddy covariance technique in growing season of 2008. Environmental factors were also observed
during the same period. Our results show that the minimum of growing season daily cumulative NEE
appeared on August 26 (1.6 g Cm2), while the maximum appeared on June 11 (0.9 g Cm2). Monthly
cumulative NEE distributed in the growing season unevenly. The minimum of monthly cumulative NEE
appeared in June (0.74 g Cm2); the maximum appeared in September (14.94 g Cm2). The sum of
the growing season NEE was 45.5 g Cm2. The most important environmental factor affecting the
half-hour average NEE was photosynthetically active radiation. The most important environmental factor
affecting the daily cumulative NEE was 20–30 cm soil water content.