Climate change effects on the community aboveground biomass in semiarid grassland of China

摘要：

　　Climate change has affected the inter-annual variation in grassland aboveground biomass, but direct, long-term ground observations are rare.We evaluated the annual and monthly variations of temperature and precipitation m typical semiarid grassland of the Loess Plateau m China during 1992-2011.Long-term biomass data were related with daily temperature and rainfall, respectively, using Partial Least Squares regression, to explore the effects of climate change on grassland biomass.Results indicated that during the past 20 years, annual and monthly temperature has increased.Precipitation showed a decreased trend, mainly occurred in the middle of the growing season.Variations m biomass can well be explained by the changes of temperature and precipitation.Increased temperatures between April and May have a positive effect on the biomass increase, while hot June and July reduced the biomass.Increasing rainfall in May and decreased precipitation from June to August further depressed the aboveground biomass.

关键词： aboveground biomass climate change semiarid grassland

作者: Liang Guo Jimin Cheng Jingwei Jin Zhaobin Jing

作者单位: Institute of Soil and Water Conservation, Northwest A&F University, Yangling 712100, Shaanxi, China; Institute of Soil and Water Conservation, Northwest A&F University, Yangling 712100, Shaanxi, China

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: 75-76

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）