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| 1 | Glacier extent changes and possible causes in the Hala Lake Basin of Qinghai-Tibet Plateau显示文摘Glacier is a common sensitivity indicator of environmental and global climate change.Examining the relationship between glacier area and climate change will help reveal glacier change mechanisms and future trends.Glacier changes are also of great significance to the regulation of regional water resources.This study selected the Hala Lake Basin in the northeastern Qinhai-Tibet Plateau as a study area,and examined the relationships between the temporal and spatial change of glaciers in the northeastern Qinghai-Tibet Plateau and climate change based on remote sensing imagery,climatological data,and topographic data during the past 30 years.Results showed that glacier area in the Hala Lake basin fluctuated and decreased from106.24 km2 in 1986 to 78.84 km2 in 2015,with a decreasing rate of 0.94 km2·yr-1.The number of glacier patches,mean patch area,and largest patch index all decreased from 1986 to 2015,while the splitting index increased from 1986 to 2015,indicating that the landscape fragmentation of glacier in the Hala Lake Basin was increasing significantly during the study period.Glacier area change was mainly concentrated in the slopes>25°with an altitude of 4500-5000 m,and the retreating rate of glacier of sunny slope was obviously higher than that of shady slope.Geometric center of glacier in the basin moved from southwest to northeast towards high altitude.Results of the response of glacier extent to climate change showed that temperature was the dominant factor affecting glacier area dynamic change in the Hala Lake Basin.It is predicted that in future several years,the glacier area will decrease and fragment continually as a result of global warming on the Tibetan Plateau. | LI Dong-Sheng CUI Bu-Li WANG Ying XIAO Bei JIANG Bao-Fu | 2019 | Journal of Mountain Science2019，16，7： | 5 |
| 2 | 尼泊尔冰川1980-2010年的变化特征显示文摘利用尼泊尔已发布的冰川编目数据、遥感数据及DEM数字高程模型,利用GIS和Excel对尼泊尔境内冰川的结构特征及1980-2010年的冰川变化特征进行了分析,并运用冰川系统功能模型模拟了同期尼泊尔冰川的变化趋势。结果表明:(1)尼泊尔境内冰川平均规模较小,且冰川分布的海拔差异大。(2)尼泊尔冰川平衡线高度分布受地形影响明显,呈现出反纬向性变化特征,存在若干以高峰为中心的高值区域。(3)1980-2010年尼泊尔冰川整体呈现退缩状态,冰川数量增加了378条,冰川面积和体积均减少,分别减少了24%和29%;小规模冰川或冰川系统退缩更快,1980-1990年冰川变化速率最快。(4)采用历史时期的气温变化率,冰川系统功能模型可以较好地模拟冰川历史时期的变化特征。 | 李巧媛 谢自楚 戴亚南 廖淑芬 | 2017 | 冰川冻土2017，39，5： | 4 |
| 3 | 尼泊尔地区种子植物的区系地理成分及其生物地理意义显示文摘利用尼泊尔地区大尺度的植物志资料,探讨该地区种子植物区系组成及板块归属。结果表明,尼泊尔地区拥有种子植物4 870种,分属于221科,1 403属。在属水平上,所占比重最大的区系分布类型是泛热带分布成分(T2)(17.18%),其次为北温带分布成分(T8)(14.75%)。在科水平上,主要以热带区系成分为主,其所占比重达到68.77%,而温带区系成分则仅为23.97%。无论在科水平还是在属水平上,该地区的种子植物区系均以热带区系成分为主。但从科到属的水平,热带区系成分所占比重从68.77%减少到51.60%。这可能与印度板块和欧亚板块相撞,导致地势抬升和环境热量降低有关。 | 王捷 徐成东 冯建孟 | 2015 | 大理学院学报(综合版)2015，14，12： | 1 |
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