RT Journal T1 Comparing the seasonal variation of parameter estimation of ecosystem carbon exchange between alpine meadow and cropland in Heihe River Basin, northwestern China A1 HaiBo Wang, MingGuo Ma PB Sciences in Cold and Arid Regions FD 2015-06-01 YR 2015 JF Sciences in Cold and Arid Regions JO Sciences in Cold and Arid Regions VO 7 IS 3 SP 216 DO 10.3724/SP.J.1226.2015.00216 K1 ecosystem carbon flux;ecosystem respiration;gross ecosystem productivity;climatic factors;alpine meadow;farmland ecosystem LK {http://www.scar.ac.cn/CN/article/article_228.shtml}