基于云-GIS模型的洪灾自然环境危险性评估研究——以神农架林区为例  

A Cloud-GIS Based Evaluation Model on the Risk Degree of Flooding Induced by Environmental Factors

作　　者：路飞月 何亚伯[1] 常秀峰[1] LU Fei-yue;HE Ya-bo;CHANG Xiu-feng(School of Civil Engineering,Wuhan University,Wuhan 430072,China)

机构地区：[1]武汉大学土木建筑工程学院,武汉430072

出　　处：《湖北农业科学》2019年第3期106-110,共5页Hubei Agricultural Sciences

基　　金：国家科技支撑计划项目(2014BAL05B07)

摘　　要：针对中国山区村镇的洪灾特点,从致灾因子和孕灾环境两个方面,研究了极限降雨水平、汛期降雨水平、坡度、泥石流等10余项指标对洪灾自然环境危险性的影响,建立了基于云模型的洪灾自然环境危险性综合评价模型。同时,利用GIS系统对空间指标数据和属性指标数据予以度量并进行可视化表达,建立了洪灾的自然环境危险度评估模型,为政府构建预警应灾体系提供了依据。以神农架林区为例,运用云-GIS模型进行了洪灾的自然环境危险性评估。结果表明,神农架林区木鱼镇洪灾自然环境危险性最高。阳日镇、大九湖镇南部以及松柏镇东南部危险性较高,需重点防范。其他乡镇洪灾自然环境危险度相对较低,新华乡南部、松柏镇西北部和下谷坪乡危险性最低。According to the characteristics of flood villages in mountainous areas in China,from two aspects of the disaster causing factors and the environment of pregnancy,this paper studies the impact of the limit rainfall level,the rainfall level in the flood season,the slope,the debris flow and so on on the natural environment hazard of the flood disaster,and establishes a comprehensive evaluation model of the natural environment hazard based on the cloud model.At the same time,the GIS system is used to measure and visualize the spatial index data and attribute data,and the hazard assessment model of the natural environment of flood is established,which provides the basis for the government to construct the early warning and disaster response system.Taking Shennongjia forest region as an example,we use cloud-GIS model to evaluate the natural environment risk of flood.The analysis results show that the most dangerous natural environment of flood disaster in Shennongjia forest region is Muyu town.There is a high risk in Yangri Town,the southern part of Dajiuhu Town and the southeastern part of Songbai Town,and we need to guard against them.The risk of natural disasters in other towns is relatively low.The southern part of Xinhua Township,the northwestern part of Songbai Town and Xiaguping Township are the least dangerous.

关 键 词：云-GIS模型 洪灾 自然环境因素 评估模型 

分 类 号：X915.5[环境科学与工程—安全科学]