A Quantitative Research of Coupled Relationship between Disasters and Poverty in Different Geographic Regions in Gansu Province
选取甘肃省六个典型区域，基于统计数据和主成分分析法，定量研究了近十年灾害与贫困的耦合关系，发现灾害易发区与贫困区高度重合，气候变化下干旱会加剧贫困并形成恶性循环。
Six representative geographic regions were chosen from the five designated poverty alleviation areas in Gansu Province to make a quantitative research on coupled relationship between disasters and poverty based on statistical data.Then through using the principal component analysis method,the development trend and distribution characteristics of disasters and poverty as well as the coupled relationship between disasters and poverty were analyzed in the last decade in the context of climate change.The results showed that: Firstly,poverty degree decreased gradually,namely poverty degree evolved from high-poverty type to low-poverty type with implementation of comprehensive socioeconomic development projects.Secondly,disasters generally maintained a relatively high degree,and disaster degree had nothing to do with temporal succession,but it was mainly affected by the frequency,type and duration of disasters.Thirdly,there is a strong coupled relationship between disasters and poverty,disaster-prone areas and impoverished areas were highly consistent in the distribution of geographical space.Especially drought would occur frequently and last for a longer time at the context of climate change,which will intensify poverty in Gansu Province,and it was easy to form a vicious cycle between disasters and poverty.