半干旱区农户对干旱恢复力的定量分析——以甘肃省榆中县为例  

Quantative analysis on farmer's resilience toward drought,a case study of Yuzhong County,Gansu Province

作　　者：杨小慧[1] 王俊[1] 刘康[1] 张向龙[1] 

机构地区：[1]西北大学城市与资源学系,西安710127

出　　处：《干旱区资源与环境》2010年第4期101-106,共6页Journal of Arid Land Resources and Environment

基　　金：国家自然科学基金项目(30500077);中国科学院知识创新工程重要方向性项目(kzcx2-yw-424-1);陕西省自然科学基金项目(2006D02)资助

摘　　要：选取我国干旱半干旱地区的一个主要的气候驱动因子—干旱作为系统的一个扰动,首先分析了对于干旱恢复力研究的现状,其次选择一种定量化的方法,选取甘肃省榆中县的三个典型乡镇作为研究对象,分别计算了三个乡镇的332户农户的干旱恢复力水平。结果显示,自然经济条件较好的中部川区的恢复力水平最高,南部山区的恢复力其次,最低的是北山的干旱区域。进一步对干旱恢复力指数(DRI)的结果与所选取的各变量进行皮尔森相关分析,得出DRI与农户的文化程度、劳动力数和有效灌溉面积三个变量的相关性最高,即这三个变量最能够影响农户的干旱恢复力。In this paper,we selected the main climate driver of arid and semi-arid region of China——drought,as the system disturbance.We firstly gave a description of the status quo of studying drought resilience,then selected a quantitative method,and chose three towns of Yuzhong County,Gansu Province as research subjects.Secondly,we calculated the drought resilience index separately of each household.The results showed that the better natural and economic conditions in central area got the highest level of DRI,the southern area got the second level and the northern area where the climate conditions are most dry,got the lowest level of DRI.Thirdly we analyzed Pearson correlations between the DRI and the selected variables,the result showed that the educated level,the workforce numbers and the effective irrigation area are the three most relevant variables,which means the three variable generates the most impact on resilience to drought.

关 键 词：农户 干旱恢复力 

分 类 号：X171[环境科学与工程—环境科学]