“‘胡焕庸线’西北半壁几乎包括了干旱及半干旱区和青藏高寒区,这种自然特点对人类社会经济活动的影响巨大。”6月16日,部分专家在“中国人口格局与胡焕庸线有关问题”研讨会上做了上述表示。80多年来被人们认识的这条中国版图上的神秘的地理人口分界线,再次引起了人们关注。 “’Hu HuanYang line’ northwest half of the wall includes almost arid and semi-arid areas and the Qinghai-Tibet alpine zone, this natural feature of human socio-economic activities have a tremendous impact. ” June 16, some experts in the Hu HuanYong line related issues "made the above said at the seminar. The mysterious geographical demarcation line on this Chinese territory, which has been recognized for more than 80 years, once again arouses people’s attention.