Effects of water and nitrogen addition on net ecosystem carbon exchange in a meadow steppe

摘要：

　　Changes in precipitation and nitrogen (N) deposition can influence terrestrial ecosystem carbon (C) cycling and budget.The effects of predicted increase in precipitation and nitrogen on net ecosystem carbon exchange were measured in Songnen meadow steppe in 2012 and 2013.Results indicated that N addition significantly stimulated aboveground biomass and growing-season net ecosystem CO2 exchange (NEE), but there were no significant effects of water addition on ecosystem C fluxes.For the studied meadow steppe, N availability is the primary limiting factor of ecosystem carbon cycling.

关键词： nitrogen addition water addition ecosystem carbon cycling

作者: Yunbo Wang Qi Jiang Deli Wang Wei Sun

作者单位: Key Laboratory of Vegetation Ecology, Ministry of Education, Institute of Grassland Science, Northeast Normal University, Changchun, Jilin Province, P.R.China 130024

会议类型: 国际会议

会议名称: The 5th China-Japan-Korea Grassland Conference(第五届中-日-韩国际草地会议)

会议地点: 长春

会议语种:英文

页码: 79-80

在线出版日期: 2014-08-20（万方平台首次上网日期，不代表论文的发表时间）