陕西省人居环境适宜性评价

摘要

人居环境的适应性分析及评价对于人口分布以及人口的合理布局有着重要的影响.基于GIS的人居环境适宜性评价模型的建立为人居环境的评价提供了科学的技术支持和分析手段.利用90 m陕西省DEM对于地形、植被、温湿、水文等限制性因子的分析能够使我们更直观地了解人居环境适应性的空间尺度.分析结果表明:根据人居环境指数分布,陕西省人居环境指数呈层状分布,最不适宜区主要集中在陕北和关中北部;最适宜地区出现在关中地区陕南地区广泛的丘陵-平原过渡地区.自然限制性因子中地形、温度、降水、植被等对于人居环境影响较大,而短时期因子对于人居环境影响不大.%The suitability evaluation of human settlements have an important impact on the population distribution and the reasonable distribution of population. Based on the GIS,the evaluation model of human settlements suitability is provided for the evaluation of human settlement environment.By using 90 m DEM in Shaanxi province, we know more about the spatial scale of habitat adaptability by analyzing the factors such as topography,vegetation, temperature and humidity,hydrology and so on.The human settlements environment index in Shaanxi province is the layered distribution. The most unsuitable habitat areas are mainly concentrated in the Northern Shaanxi and north of Guanzhong region.While the most suitable habitat areas are the hilly-plain transitional areas in Guanzhong and Southern Shaanxi. We find the terrain,temperature,precipitation,vegetation and other factors have a great impact on the living environment,while the short term factor has a little effect on human settlements.