论文部分内容阅读
自2009年秋季以来,我国西南地区特别是广西、重庆、四川、贵州、云南5省(自治区、直辖市)遭受了连年旱灾。其中云南、贵州、广西等省(自治区)降水较常年同期偏少五成以上,部分地区降雨偏少七至九成,主要河流来水为历史最少,土壤含水量普遍仅20%左右,旱情极为严峻。干旱,从地理学上看,属于自然灾害中的气象灾害,肯定有其自然环境方面的因素,但我们反思更多的,则是人为方面的因素。从人类社会早期的“崇拜自
Since the fall of 2009, five provinces (autonomous regions and municipalities directly under the Central Government) in southwestern China, especially Guangxi, Chongqing, Sichuan, Guizhou and Yunnan, have suffered successive years of drought. Among them, the precipitation in Yunnan, Guizhou and Guangxi provinces dropped by more than 50% over the same period of previous years, with precipitation falling by 70% to 90% in some areas. The main rivers had the least history of water inflow and the soil water content was only about 20% severe. Drought, from a geographical point of view, belongs to natural disasters in the meteorological disasters, there must be a natural environment factors, but we reflect more, it is human factors. From the early days of human society ”worship from