摘要
为增强农村居民点地质环境安全布局认识,科学推动农村建设用地可持续、健康发展。以云南省盈江县为研究区域,选择坡度、线性构造等评价指标,用Logistic回归模型对研究区进行了地质灾害危险性区划,其中为了统一评价单元,通过ArcGIS建立鱼网将相关地理信息数据网格化。再根据地质灾害危险性区划结果对现状农村居民点布局进行相关分析和研究。结果表明:盈江县地质灾害区划分区结果中的中高易发区占到全县总面积的63.57%,包含全县95.83%的历史地质灾害点;且农村居民点位于地质灾害中、高易发区的面积占居民点总面积比例达到74.55%,所有乡镇都有位于高易发区的居民点;基于农村居民点现状与区划结果,将各乡镇及其典型村落划分为3个级别,并针对性地提出"梯度推进"、"内部整改"、"就地城镇化"3种优化方向。
To strengthen the understanding of the geological environment safety distribution of the rural settlement areas,to promote the sustainable and healthy development of the rural construction land,Yingjiang County in Yunnan Province was selected as the study area,a logistic model was used for zoning the geological hazard risk according to slopes and linear structures.Aiming at unifying evaluation unit,we created fishnet in ArcGIS to transform geographic information data to be grid.According to the zoning results,the distribution of the rural settlements was analyzed and studied.The results showed that the areas highly prone to geological risk in Yingjiang County accounted for 63.57% of the total area,including 95.83% of the county′s geological disaster in history;and rural residential areas located in the areas highly prone to geological disaster accounted for 74.55% of the total area of residential land,all towns have somewhere located in high prone areas;according to zoning of geological hazard risk and the rural residential distribution,the towns and the typical villages can be divided into 3levels,including the‘gradient propulsion’,‘internal rectification’and‘situ urbanization’.So then,three optimization paths were proposed in this paper.
出处
《水土保持研究》
CSCD
北大核心
2017年第3期320-324,368,共6页
Research of Soil and Water Conservation
基金
云南大学资源环境与地球科学学院学院制建设专项基金"云南边疆少数民族地区山地城镇建设土地开发利用模式研究"(2013CK003)
关键词
地质灾害
危险性区划
农村居民点布局
优化
盈江县
geological hazards
risk zoning
rural residential distribution
optimization
Yingjiang County
