世界上最大的沙漠－撒哈拉

世界上最大的沙漠－撒哈拉 考研屋 www.kaoyanwu.com 提供各大机构考研、公务员、四六级辅导视频课程 The Sahara Desert， covering most of North Africa， is the largest desert in the world. From north to south the Sahara is between 800 and 1，200 miles and is at least 3，000 miles (4，800 km) from east to west. Due to the massive size of the Sahara， Africa is split into two regions: that which lies above or forms part of the Sahara and the rest of Africa south of the Sahara. On the west， the Sahara is bordered by the Atlantic Ocean and on the east by the Red Sea， and to the north are the Atlas Mountains and Mediterranean Sea.Over 25 percent of the Sahara’s surface is covered by sand sheets and dunes. 撒哈拉沙漠是世界上最大的沙漠， 25,的沙漠被沙土和 The Sahara’s climate consists of basically two sub-climates， 沙丘覆盖。 Climate 气候 a dry subtropical climate in the north and a dry tropical climate in the south. The dry tropical climate is generally characterized by mild， dry winters， a hot dry season just before the rainy season， and an annual temperature cycle. The dry subtropical climate， however， is characterized by annually high temperature ranges， cold winters， hot summers and two rainy seasons. There is a narrow strip in the western portion of the Sahara， along the coast， which generally has cool temperatures compared to the rest of the Sahara because of the influence of the cold Canary Current. 撒哈拉沙漠包含了2种气候， 一种是北部的干旱亚热带气候，令一 种是南部的干旱热带气候。 Plant Life 植物生活 The Sahara is sparsely covered with various types of vegetation ranging from grasses， shrubs， and trees in the highlands to halphytes， which are saline-tolerant plants found in saline depressions. One characteristic of the vegetation found in the Sahara is that these species must be able to adapt to unreliable precipitation and excessive heat. 草丛，灌木和树木都可以生长，这些树木的特点是能承受巨 热和盐碱地带。 Animal Life 动物生活 Some of the mammal species found within the ， Cape hare， the desert hedgehog， dorcas gazelle， dama deer， Sahara are the gerbil， jerboa Nubian wild ， anubis baboon， spotted hyena， common jackal， sand fox， Li 考研屋www.kaoyanwu.com :提供各大机构考研、公务员、四六级辅导视频课程 专业提供提供各大机构考研、公务员、四六级辅导视频课