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胡杨,又名异叶杨,古时称为胡桐。主要分布在我国新疆塔里木、准噶尔盆地,内蒙古西部,甘肃额济纳河流域,河北、陕西、宁夏及东北部分地区。《汉书·西域传》和《水经注》里都有塔里木盆地“胡桐树杂,古干成林”的记载。荒漠开发者则以胡杨为向导,因为它喜欢生长在湿润的土壤上,循着它的“足迹”,人们可以在干旱荒漠上找到清澈的甘泉和潺潺溪流。胡杨不同于一般杨树,它特别耐干旱和耐盐碱,在绝大多数森林树木都无法生存的沙漠盐碱地上,胡杨却可以在那里茁壮成长。为什么呢?原来,它在长期的进化过程中,逐渐获得了一种特殊本领。异常发
Populus euphratica, also known as different Ye Yang, known as the ancient trees. Mainly distributed in China’s Tarim, Xinjiang, Junggar Basin, western Inner Mongolia, Gansu Ejin River Basin, Hebei, Shaanxi, Ningxia and parts of the northeast. “Han Dynasty · Western Regions Biography” and “water by the note” in the Tarim Basin have “albino tree miscellaneous, ancient dry forest” records. Desert developers are guided by Populus euphratica, because it likes to grow in moist soil, followed by its “footprint”, people can find in the arid desert of the crystal clear waters and gurgling streams. Unlike other poplars, Populus euphratica is particularly resistant to drought and salinity, and Populus euphratica can thrive in desert salina, where most forest trees can not survive. Why? It turned out that it gradually gained a special skill in the long-term evolutionary process. Abnormal hair