GOU Ruikun,ZHAO Xuan,BU Yuankun,et al.Dynamic Study on the Heat Island Effect and Landscape Pattern in Urban Area of Hangzhou[J].Research of Soil and Water Conservation,2019,26(01):316-322,329.
杭州市城区热岛效应与景观格局的动态研究
- Title:
- Dynamic Study on the Heat Island Effect and Landscape Pattern in Urban Area of Hangzhou
- Keywords:
- remote sensing; heat island effect; landscape pattern; multivariate linear regression model
- 分类号:
- X87;TP79
- 摘要:
- 以杭州市城区为研究对象，以1992年、2004年Landsat-5，2015年Landsat-8卫星遥感数据为信息源，利用单窗算法反演三期城区地表温度，通过提取土地利用类型信息来计算景观格局指数，结合多元回归线性模型分析了杭州市城区景观格局对地表温度的影响。结果表明：（1）在研究时间段内，杭州市城区存在着明显的热岛效应，高温区域不断扩张、分散；（2）多元线性回归模型可以很好地刻画景观格局与地表温度之间的定量关系，景观格局指数PLAND，ED，LSI和AI与地表温度的相关性最高，分别达0.753，0.771，0.779，0.772，景观的面积指标、形状指标、边缘指标和聚合指标等共同影响着杭州市城区热岛效应的强度；（3）在城市化建设进程中，应通过增加绿地景观的面积，合理选择植物物种，形成集中成片的绿地，从而对城镇用地进行分割，提高现有绿地景观的立体化程度，建设较为复杂的绿地生态网络系统等方式，来缓解和改善热岛效应，达到改善人居环境的目的。
- Abstract:
- The urban area of Hangzhou was taken as the research object. The information sources mentioned in this study was from Landsat-5 and Landsat-8 satellite remote sensing data in 1992, 2004 and 2015. The single-window algorithm was used to retrieve the surface temperature of the third phase urban area. The landscape pattern index was calculated by retrieving land use types. And then the impact of urban landscape pattern on surface was analyzed with multiple linear regression model. The results showed that:(1) during the study period, there was an obvious heat island effect in urban area of Hangzhou, with high temperature area expanding and dispersing; (2) multiple linear regression model could well describe the quantitative relationship between landscape pattern and surface temperature; among those variables, the landscape pattern indices PLAND, ED, LSI and AI had higher correlation rates with the surface temperature, reaching up to 0.753, 0.771, 0.779 and 0.772, respectively; the area index, shape index, edge index and aggregation index of landscape influenced the intensity of the heat island effect in Hangzhou; (3) in the process of urbanization, the heat island effect should be alleviated by increasing the area of green landscape, choosing the right plant species, forming intensive green area, dividing urban area, improving the stereoscopic degree of the existing green landscape, and building a more complex green space ecological network system, which will contribute to achieve to goal of improving the living environment.
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备注/Memo
收稿日期:2018-2-28;改回日期:2018-4-1。
基金项目:陕西省林业综合重点实验室项目（20130115）
作者简介:苟睿坤(1994-),男,陕西西安人,在读硕士,研究方向为"3S"技术在资源与环境中的应用。E-mail:grk_123@163.com
通讯作者:赵鹏祥(1965-),男,陕西杨凌人,副教授,博士,研究方向为林业遥感。E-mail:542258192@qq.com