基于GIS与RS的南方丘陵区水资源系统脆弱性动态演变特征研究——以衡阳盆地为例
发布时间：2018-08-18 20:20
【摘要】：主要通过遥感(RS)手段获取研究所需数据,采用地理信息系统(GIS)空间建模和空间分析方法,以衡阳盆地为例,构建提取水资源系统人为脆弱性变化信息的数学模型,生成水资源系统人为脆弱性变化图层,分析近20年来衡阳盆地水资源系统人为脆弱性变化的时空特征,并进行趋势分析。结果表明:1近20年来,衡阳盆地人为水资源系统整体上变得更为脆弱,34.41%的区域人为脆弱性指数明显增大,脆弱性指数变小的区域少;2脆弱性指数变化区域分异明显,衡东县、衡南县的东部和祁东县的西部以基本不变化和略微增大为主。祁东县的东南角和耒阳市的东部以增大类型为主,减小类型则主要集中在常宁市;3脆弱性指数演变呈现较显著的"首尾时段增强明显,中间时段相对稳定"的特征;4区域水资源人为脆弱性指数主要表现为波动型和稳定型两种趋势,单调增大型和单调减小型所占比例极小。
[Abstract]:This paper mainly uses remote sensing (RS) to obtain the needed data of the research, uses (GIS) spatial modeling and spatial analysis method, taking Hengyang Basin as an example, constructs a mathematical model to extract the information of artificial vulnerability change of water resources system. The temporal and spatial characteristics of anthropogenic vulnerability of water resources system in Hengyang Basin in recent 20 years were analyzed and the trend was analyzed. The results show that in the past 20 years, the anthropogenic water resources system in Hengyang Basin has become more fragile in the whole, 34.41% of the regional human vulnerability index is obviously increased, and the area with smaller vulnerability index has obvious regional differentiation, Hengdong County, the area where the vulnerability index is smaller, the regional variation of the vulnerability index is obvious. The eastern part of Hengnan County and the western part of Qidong County are basically unchanged and slightly larger. In the southeast corner of Qidong County and the eastern part of Leiyang City, the enlargement type is the main type, while the decrease type is mainly concentrated in the Changning City, where the vulnerability index evolves significantly. The characteristics of "relatively stable" in the middle period are characterized by the fluctuation type and the stable type of water resource anthropogenic vulnerability index. The proportion of monotonic increasing type and single adjusting and decreasing small type is very small.
【作者单位】： 衡阳师范学院城市与旅游学院;
【基金】：国家自然科学基金项目(编号:41271533)
【分类号】：TV213.4
本文编号：2190565
[Abstract]:This paper mainly uses remote sensing (RS) to obtain the needed data of the research, uses (GIS) spatial modeling and spatial analysis method, taking Hengyang Basin as an example, constructs a mathematical model to extract the information of artificial vulnerability change of water resources system. The temporal and spatial characteristics of anthropogenic vulnerability of water resources system in Hengyang Basin in recent 20 years were analyzed and the trend was analyzed. The results show that in the past 20 years, the anthropogenic water resources system in Hengyang Basin has become more fragile in the whole, 34.41% of the regional human vulnerability index is obviously increased, and the area with smaller vulnerability index has obvious regional differentiation, Hengdong County, the area where the vulnerability index is smaller, the regional variation of the vulnerability index is obvious. The eastern part of Hengnan County and the western part of Qidong County are basically unchanged and slightly larger. In the southeast corner of Qidong County and the eastern part of Leiyang City, the enlargement type is the main type, while the decrease type is mainly concentrated in the Changning City, where the vulnerability index evolves significantly. The characteristics of "relatively stable" in the middle period are characterized by the fluctuation type and the stable type of water resource anthropogenic vulnerability index. The proportion of monotonic increasing type and single adjusting and decreasing small type is very small.
【作者单位】： 衡阳师范学院城市与旅游学院;
【基金】：国家自然科学基金项目(编号:41271533)
【分类号】：TV213.4
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