气候变化研究进展2018，Vol.14Issue(2)：137-143,7.DOI:10.12006/j.issn.1673-1719.2017.088
1980-2009水文年青藏高原积雪物候时空变化遥感分析
Spatio-temporal changes of snow phenology in the Qinghai-Tibetan Plateau during the hydrological year of 1980-2009
摘要
Abstract
Taking the Qinghai-Tibetan Plateau as the object of study, based on the daily dataset of snow depth from 1980 to 2009, the mean snow depth, snow cover start (SCS) and snow cover end (SCE) dates were calculated for each hydrological year, and the spatial and temporal variations and distribution anomaly of them were analyzed by using the spatial and statistics analysis function of GIS. The results showed that, mean snow depth decreased during the period of 1980-1989, and started to increase from the 1990s. In the 1980s, the SCS showed a significantly advanced trend, which mainly occurred in the high altitude region of the Qinghai-Tibetan Plateau except the Altun Mountains and Kunlun Mountains. The SCE showed a significantly delay, occurred in the high altitude region. In the 1990s, the advanced trend of SCS in the high altitude region showed a slightly delayed trend, but the SCS in the central plateau hinterland showed a significantly advanced trend. The SCE in the high altitude region became weak. And the SCE in the central plateau hinterland showed a delayed trend. In the beginning of the 21st century, the SCS in the Pamir Plateau, Nyainqentanglula Mountains and Transverse Mountains showed a significantly delay trend. The SCE in the Hengduan Mountain, Nianqing Tanggula and Bayan Hara Mountain showed a significantly advanced trend. Generally, the snow phenology showed different spatial patterns and evolution trends in different regions.关键词
青藏高原/雪深/积雪物候变化/被动微波遥感Key words
Qinghai-Tibetan Plateau/Snow depth/Snow phenology variability/Passive microwave引用本文复制引用
乔德京,王念秦,李震,周建民,符喜优..1980-2009水文年青藏高原积雪物候时空变化遥感分析[J].气候变化研究进展,2018,14(2):137-143,7.基金项目
国家重点研发计划(2016YFA0600304) （2016YFA0600304）
科技基础资源调查专项(中国积雪时空分布特性遥感调查,2017FY100502) （中国积雪时空分布特性遥感调查,2017FY100502）
自然科学基金项目(41572287) （41572287）
