基于地质灾害危险性区划的盈江县农村居民点空间布局优化

发布时间：2018-06-23 05:10

  本文选题：地质灾害 + 危险性区划　； 参考：《水土保持研究》2017年03期

【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。
[Abstract]:In order to enhance the understanding of the geological environment safety distribution in rural residential areas, the sustainable and healthy development of rural construction land can be promoted scientifically. Taking Yingjiang County, Yunnan Province as the study area, slope and linear structure were selected, and the geological hazard risk regionalization was carried out with Logistic regression model, in order to unify the evaluation unit. The relevant geographic information data is gridded through the establishment of fish net by ArcGIS. Based on the results of geological hazard zoning, the distribution of rural residential areas is analyzed and studied. The results show that the middle and high risk areas account for 63.57% of the total area of the whole county, including 95.83% of the historical geological hazards in Yingjiang County, and the rural residential areas are located in the geological disasters. The proportion of the area of high-susceptible areas to the total area of residential areas reached 74.555.All townships had settlements located in high-susceptible areas, and based on the present situation of rural settlements and the results of regionalization, the villages and towns and their typical villages were divided into three levels. It also puts forward three optimization directions: "gradient advance", "internal rectification" and "local urbanization".
【作者单位】： 云南大学资源环境与地球科学学院;
【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)
【分类号】：P694;F301.2
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本文编号：2055926