资源科学 ›› 2017, Vol. 39 ›› Issue (11): 2130-2140.doi: 10.18402/resci.2017.11.11
石育中1, 李文龙1, 2, 鲁大铭1, 王子侨1, 杨新军1
收稿日期:
2017-04-10
修回日期:
2017-08-05
出版日期:
2017-11-20
发布日期:
2017-11-20
通讯作者:
杨新军,E-mail:作者简介:
石育中,男,甘肃陇南人,博士生,研究方向为人地耦合系统脆弱性与区域可持续发展。E-mail:syz19880919@126.com
基金资助:
SHI Yuzhong1, LI Wenlong1, 2, LU Daming1, WANG Ziqiao1, YANG Xinjun1
Received:
2017-04-10
Revised:
2017-08-05
Online:
2017-11-20
Published:
2017-11-20
摘要: 干旱脆弱性评价是干旱半干旱地区人地关系研究的重要内容,对减缓和应对干旱具有重要作用,乡镇尺度的干旱脆弱性评价为西北乡村人地系统可持续性研究提供新的视角。本文引用干旱脆弱性分析框架,从暴露度、敏感性和适应能力三个维度构建指标体系,选择甘肃榆中县作为黄土高原典型研究区域,采用2002—2015年统计数据、气象数据和遥感数据,运用熵值法、综合指数法和局部空间自相关指数法等分析方法分别对指标权重、干旱脆弱性指数与类型及其空间集聚性进行分析。研究结果表明:①榆中县干旱脆弱性指数呈波动式变化趋势,阶段性升降明显;②不同脆弱类型的乡镇数量由高到低分别为中脆弱>高脆弱>低脆弱,且高脆弱的乡镇数量增加趋势明显;③干旱脆弱性影响因素由高到低分别为年降水量、坡度、年平均气温、干旱影响面积、农民纯收入、人口密度和农业人口比例,年降水量为干旱脆弱性的首要决定因素;④干旱脆弱性热点区域总体格局呈现“南-北热中部冷”的空间格局,具有明显的地理集聚特征,且局部乡镇热点区域趋于稳定。
石育中, 李文龙, 鲁大铭, 王子侨, 杨新军. 基于乡镇尺度的黄土高原干旱脆弱性时空演变分析——以榆中县为例[J]. 资源科学, 2017, 39(11): 2130-2140.
SHI Yuzhong, LI Wenlong, LU Daming, WANG Ziqiao, YANG Xinjun. Spatio-temporal analysis of drought vulnerability on the Loess Plateau of China at town level[J]. Resources Science, 2017, 39(11): 2130-2140.
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