CO2 Emission Fluxes with Different Tillage Patterns in North China Plain
Based on different tillage patterns experiments of the CO2 emission fluxes were investigated in north China plain. The effluent CO2 was collected and analyzed by the static-chamber/gas chromatography method at a frequency of ten days in spring and summer, and once a month in spring and winter. The results indicated that CO2 emission fluxes showed two perks in winter wheat one was after tillage and the other was in jointing stage, and the average CO 2 emission fluxes by different tillage was PT (moldboard plow tillage) >RT (rotary tillage) >NT (no-tillage). In winter wheat growth season, the CO 2 emission fluxes was 487.10mg·m-2·h-1 for PT, 456.64mg·m-2·h-1 for RT and 274.89mg·m-2·h-1 for NT CO2 emission fluxes and soil temperature had a significant exponential correlation, specially the correlation of soil temperature at the depth of 10cm was best for PT and at the depth of 20cm was best for RT and NT. CO2 emission fluxes and soil temperature had a significant exponential function, and using the continuously soil temperatures we simulation the dynamics of CO2 emission fluxes. At the same time we calculated CO2 emissions was 1.778kg/m2 under PT, 1.755kg/m2 under RT and 0.911kg/m 2 under NT.
soil tillage CO2 emission fluxes soil temperature north China plain
Li lin Zhang hailin Chen fu
College of Agronomy and Biotechnology, China Agricultural University, Beijing 100094, China
国际会议
2006年中—加保护性耕作论坛(China-Canada Conservation Agriculture Forum)
北京
英文
124-130
2006-09-21（万方平台首次上网日期，不代表论文的发表时间）