Shuidonggou is one of the most important Upper Paleolithic sites in North China. Due to the presence of rich human remains,animal fossils,abundant sporopollen and unique geological sequence,it is the
A dipole structure anomaly in summer Arctic atmospheric variability is identified in this study, which is characterized by the second mode of empirical orthogonal function (EOF) analysis of summer mon
在非洲南部赞比西河中游上,赞比亚与津巴布韦接壤处,有一处伟大的自然奇观——维多利亚瀑布(Victoria Falls),它和南美的伊瓜苏瀑布、北美的尼亚加拉瀑布合称为世界三大瀑布。英国探险家比多·利文斯通于1855年发现了它,并以当时英国女王的名字为它命名,其实它在此之前就有自己的名字,赞比亚人称它为"莫西奥图尼亚"(Mosi-oa-Tunya),意思是"雷声轰鸣的水雾",这是赞比亚人对大瀑布富有
Acting as an important driving force for the change of the regional land use,the change of industrial structure also has some influences on the ecological environment.The assessment and mechanism anal