北纬地区温度和卫星监测的植被活动节律变化的比较分析(英文)

编号 zgly0001585181

文献类型 期刊论文

文献题名 北纬地区温度和卫星监测的植被活动节律变化的比较分析(英文)

作者 马廷  周成虎  裴韬  谢一春 

作者单位 StateKeyLaboratoryofResourcesandEnvironmentalInformationSystem  InstituteofGeographicSciencesandNaturalResourcesResearch  CAS  DepartmentofGeographyandGeology  EasternMichiganUniversity 

母体文献 Journal of Geographical Sciences 

年卷期 2013年01期

年份 2013 

分类号 Q948 

关键词 landsurfacetemperature  plantphenology  NDVI  climatechanges  northernlatitudes 

文摘内容 Plant growth at northern latitudes is highly responsive to the climatic changes that have occurred over recent decades. However, the sensitivity of the phasing of the seasonal cycle of terrestrial ecosystems to a changing environment remains less widely understood. We present an investigation and comparative study of large-scale changes in seasonal cy-cling of both land surface temperature and plant growth. Our results have shown trends in-dicating a marked increased towards overall plant productivity by ~3% from 1982 to 2005, reduced trends in seasonal variation at low-mid latitudes by ~2%, increased trends in sea-sonal variations at mid-high latitudes by ~7%, and an earlier phase in northern terrestrial ecosystems (~1.1 days) in parallel with changes in the phasing of surface temperatures at northern latitudes over the 24 years in this study. These shifts in annual cycles of terrestrial vegetation appear to have a distinct geographical zonality and are dependent upon latitudinal changes in climatic variables. More conspicuous changes in overall vegetation productivity and the seasonal phase of ecosystems have been observed in Eurasia compared to North America, largely because of a more rapid rise in temperature. Our results state that changing climate boosts plant growth at northern latitudes, but also alters the phase and seasonal variations of the annual cycle of terrestrial ecosystems.