摘要
全球气候变化和西南喀斯特地区社会经济的发展,区域水资源脆弱性问题逐渐凸显。选取人类活动强烈、喀斯特地貌发育典型的黔中典型区县为例,基于DPSIR模型构建了反映黔中地区水资源脆弱性的评价指标体系,采用熵权-TOPSIS法对研究区2007、2015年的水资源脆弱性进行了诊断评价。结果表明:镇宁县、关岭县水资源脆弱性分别出现降低、六枝特区大致保持稳定外,普定县、平坝县水资源脆弱性均呈上升趋势(加剧),上升程度为16.44%、7.03%,其中普定县、平坝县2015年水资源脆弱性贴近度为0.487 8、0.496 1,为中度-偏重度脆弱。分析认为,黔中地区经济社会迅速发展对水资源需求的急剧增加,大型水资源工程缺乏及水资源利用率低,尤其是地下水资源是区域水资源脆弱性上升的主要原因。此外,区域石漠化等生态环境破坏也是造成水资源脆弱性增加的重要因素。
Global climate change and social-economic development in southwest karst regions have highlighted the issue of regional water vulnerability. Taking the typical counties in central areas of Guizhou,where human activities are intense and the development of karst landform is typical,as an example,the evaluation index system based on DPSIR model is constructed to reflect the water resource vulnerability of central areas of Guizhou,and the vulnerability of water resources in the year of 2007 and 2015 are diagnosed by using the entropy weight-TOPSIS method in the study area. The results shows that： the water resources vulnerability of Zhenning County and Guanling County decreased,that of Liuzhi Prefecture remained stable,while that of Puding County and Pingba County increased by 16. 44% and 7.03%,respectively; the water resources vulnerability in Puding County and Pingba County was 0.487 8 and 0.496 1 in 2015,which were moderate to moderately severe. The analysis shows that the increase of the demand of water resources due to the rapid development of economy and society in central areas of Guizhou,the lack of water resources engineering and low water resources utilization rate,especially the groundwater resources are the main reasons for the rise of regional water resources vulnerability. In addition,the destruction of ecological environment,such as regional rocky desertification,is also an important factor for the increase of water resources vulnerability.
作者
周奉
苏维词
郑群威
ZHOU Feng;SU Wei-ci;ZHENG Qun-wei(School of Geography and Tourism,Chongqing Normal University,Chongqing 401331,China;Institute of Mountain Resource,Guizhou Academy of Sciences,Guiyang 550001,China;Laboratory of Surficial Process and Environmental Remote Sensing,Chongqing 401331,China)
出处
《节水灌溉》
北大核心
2018年第8期59-65,共7页
Water Saving Irrigation
基金
国家重点研发计划课题项目(2016YFC0400708)
贵州省科技计划课题项目(黔科合J重大字[2015]2001)
贵州科技厅创新人才团队计划项目(黔科合人才团队[2014]4014)
重庆市教委科学技术研究项目(KJ1500338)
