摘要
研究了传统耕作和保护性耕作2种方式对玉米农田生态系统各碳库的影响规律,结果表明:与传统耕作方式相比,保护性耕作能有效提高玉米各器官生物量,整株生物量平均提高了2.15倍,各器官有机碳含量平均提高了11.4%,单株碳储量提高了2.56倍;保护性耕作能有效提高0～30 cm各土层有机碳储量,对0～10 cm土层范围内土壤有机碳含量影响程度明显,其碳含量较传统耕作提高近1倍;实施保护性耕作后,玉米农田生态系统各碳库碳储量呈现明显的增加趋势,玉米农田生态系统地上碳库、根系碳库、土壤碳库和总碳库碳储量分别达到了1 431.62 kg/hm2、364.79 kg/hm2、27 667 kg/hm2、29 463.66 kg/hm2,比传统耕作分别提高了263.6%、228.6%、62.7%、68.3%。
Through researching the law of traditional tillage and conservation tillage which influence the carbon pool in corn field ecosystem,the results show that the conservation tillage can effectively increase the biomass of each organ,the biomass of the whole stock can be meanly raised by 2.15 times,the organic carbon content in each organ can be raised by 11.4 percent,the carbon storage of single stock can be raised by 2.56 times.The conservation tillage can increase the organic carbon storage at each layer from 0 to 30 cm,raise the soil organic carbon content at 0~10 cm layer obviously.The carbon storage in aboveground carbon pool,the root system carbon pool,soil carbon pool and the total carbon pool of corn field ecosystem can reach to 1 431.62 kg/hm2,364.79 kg/hm2,27 667 kg/hm2 and 29 463.66 kg/hm2 separately,which has been increased by 263.6%,228.6%,62.7% and 68.3% separately than the traditional tillage.
出处
《内蒙古林业科技》
2012年第1期14-17,29,共5页
Journal of Inner Mongolia Forestry Science and Technology
基金
国家科技支撑计划项目(2011BAC07B02-03)资助
关键词
保护性耕作
生物量
有机碳含量
碳储量
conservation tillage
biomass
organic carbon content
carbon storage
