【摘 要】
：
The catchment of South Luohe River in Central China is an important region for investigating modern pollen-environment relationship, because it is located in the transitional zone between south and no
【出 处】
：
Journal of Geographical Sciences
论文部分内容阅读
The catchment of South Luohe River in Central China is an important region for investigating modern pollen-environment relationship, because it is located in the transitional zone between south and north China, an environment which is sensitive to clim
其他文献
石蚕(昆虫纲:毛翅目)巢化石保存在宁夏六盘山盆地早白垩世马东山组和乃家河组含盐地层中,化石呈群栖、密集、相互平行、叠层状分布,石蚕巢为直立锥状体,长约13mm,平均直径约2.5mm.管壁具三层式结构,包括内、外暗色有机质层和中部胶结颗粒层.暗色有机质层为泥晶结构,以灰泥质为主;中部胶结颗粒层,主要由有机质球粒构成,球粒呈球形、椭球形和卵圆形等,形态大小一致,平均长0.3mm,直径0.10~0.15
Alpine timberline, as the "ecological transition zone," has long attracted the attention of scientists in many fields, especially in recent years. Many unitary and dibasic fitting models have been dev
The Three-River Headwaters Region(TRHR), which is the source area of the Yangtze River, Yellow River, and Lancang River, is of key importance to the ecological security of China. Because of climate ch
The regional changes of daily temperature extremes in North China caused by urbanization are studied further from observed facts and model estimates on the basis of homogenized daily series of maximum
"2013中国最具国际影响力学术期刊"、"2013中国国际影响力优秀学术期刊"遴选工作已由中国学术期刊(光盘版)电子杂志社、清华大学图书馆、中国学术文献国际评价研究中心完成。《地学前缘》获得"2013中国最具国际影响力学术期刊",
Based on daily maximum and minimum temperature observed by the China Meteorological Administration at 115 meteorological stations in the Yangtze River Basin from 1962 to 2011,the methods of linear reg
Climate change is likely to affect hydrological cycle through precipitation,evapotranspiration,soil moisture etc.In the present study,an attempt has been made to study the climate change and the sensi
The estimation of surface evapotranspiration(ET) with satellite dataset is one of the main subjects in the understanding of climate change,disaster monitoring and the circulation of water vapor and en
The water quality in the surface microlayer(SML) and subsurface water(SSW) in the Guangzhou segment of Pearl River, a eutrophic urban river section in China, were analyzed. The spatial and temporal dy
在塔里木河下游选取中度退化区、重度退化区和极度退化区进行野外植被调查,通过对比分析漫溢样地与无漫溢样地的数据,初步探讨漫溢干扰对不同退化条件下河岸植被群落组成和多样性的影响。结果表明:(1)3个退化区的无漫溢样地均以乔(灌)木为主要生活型,其物种数分别占各自样地总物种数的62.5%、100%和75%。多年生草本为中度退化区和重度退化区漫溢样地的主要生活型,其物种数所占比例分别为37.5%和42.8