基于GIS的旅游古镇生态敏感性分析与评价--以兰州市青城古镇为例  

Analysis and Evaluation of Ecological Sensitivity of Tourist Town Based on GIS—Taking Qingcheng Town in Lanzhou City as an Example

作　　者：李巍[1] 郭莉盼 LI Wei;GUO Li-pan(College of Geography and Environment Science,Northwest Normal University,Lanzhou,Gansu 730070)

机构地区：[1]西北师范大学地理与环境科学学院,甘肃兰州730070

出　　处：《安徽农业科学》2021年第3期76-80,共5页Journal of Anhui Agricultural Sciences

摘　　要：以兰州青城古镇为研究区,采用GIS空间分析技术与AHP分析法,从土壤侵蚀敏感性、水环境敏感性、生境敏感性3个方面展开,共选取5个生态子因子构建评价指标体系,对青城古镇的生态敏感性进行综合分析与评价。结果显示:青城古镇的生态敏感性总体较高,空间分异较大,呈北低南高的分异特征。全域综合生态敏感性分为低度敏感区、中度敏感区与高度敏感区3个等级,各区面积占比为32.51%、25.62%、41.87%。研究显示,青城古镇生态敏感性程度受地形地貌、植被覆盖度与水系3类因子影响较大;镇域北部黄河谷地与南部黄土梁峁山区周围敏感性较高,而北部中心镇区周围及西南部五大坪附近敏感性较低。The study takes Qingcheng Town of Lanzhou City as the study area,applying GIS spatial analysis and AHP analysis method.Then,selects a total of five ecological sub-factors from the three aspects of soil erosion sensitivity,water environment sensitivity and habitat sensitivity to construct an evaluation index system.Finally,conducts a comprehensive analysis and evaluation of the ecological sensitivity of Qingcheng Town.The results show that the ecological sensitivity of the Qingcheng Town is generally high and reflects the spatial differentiation characteri-stics of the north low and south high.The ecological sensitivity of the study area is divided into three grades:mildly sensitive,moderately sensitive,highly sensitive,respectively accounting for 32.51%,25.62%and 41.87%of the total study area.The results show that the ecological sensitivity of Qingcheng Town is greatly affected by three factors,such as geomorphology,vegetation coverage and water system.There is a high ecological sensitivity around the Yellow River valley in the north and the loess ridge mountain area in the south of the town domain,however,the ecological sensitivity is low around the central town area in the northern part of the town and near five big daping land in the southwest.

关 键 词：生态敏感性 GIS 空间分析 青城古镇 

分 类 号：X321[环境科学与工程—环境工程]