基于NPP-VIIRS夜光遥感的杭州市建成区结构发展变化分析

Analysis of the Structural Development and Change of the Built-up Area in Hangzhou Based on NPP-VIIRS Luminous Remote Sensing

为探索杭州市城市结构发展变化,本文基于NPP-VIIRS夜光遥感数据,结合GIS与Fragstats技术分析杭州市城市建成区动态变化以及结构发展演变分析。结果表明:1)研究期间,杭州市建成区面积持续扩张,以原有区域为基础向四周蔓延式增长;2)通过构建城市扩张指数分析,杭州市年均扩张速率、扩张强度持续降低,联合光强度和夜光均值评价指标,分析城市建成区内部的经济发展水平;3)景观格局指数显示,杭州市建成区景观破碎度变大,景观形态复杂度提高。杭州市应充分发挥地理资源优势,统筹全域均衡发展,有效提升用地合理性。该研究对提高城市规划管理水平具有参考价值,可为杭州市城市用地规划、建设及可持续发展提供科学依据。

In order to explore the development and change of urban structure in Hangzhou,based on the NPP-VIIRS luminous remote sensing data,combined with GIS and Fragstats technology,the dynamic change of urban built-up areas of Hangzhou and the analysis of structural development and evolution are analyzed.The results show that:(1)During the research period,the built-up area in Hangzhou continued to expand,with a sprawling growth based on the original area towards the surrounding areas;(2)Through the construction of urban expansion index analysis,the average annual expansion rate and expansion intensity of Hangzhou continue to de-crease,and the economic development level within the urban built-up area is analyzed by combining the evaluation indicators of light intensity and average luminous intensity;(3)The landscape pattern index shows that the fragmentation degree of the landscape in the built-up area of Hangzhou has become larger and the complexity of the landscape form has increased.Hangzhou should give full play to the advantages of geographical resources,coordinate the balanced development of the whole region,and effectively improve the ra-tionalization of land use.This study has reference value for improving the level of urban planning and management,with a view to pro-viding scientific basis for the planning,construction and sustainable development of urban land in Hangzhou.