大连旅顺区土地利用及地表温度时空分异研究

Spatial and Temporal Differentiation of Land Use and Land Surface Temperature in Lvshun District of Dalian City

伴随着城市空间的快速扩展,土地利用发生巨大转变,城市气候和生态环境问题日益突出。本文以大连旅顺区为例,基于2005年和2016年两期数据,单窗算法进行地表温度反演,并通过GIS空间分析方法,探讨旅顺区土地利用及地表温度时空分异特征。2005-2016年,旅顺区建设用地、水域面积呈增加趋势,面积分别增加了9.51 km2、13.19 km2;耕地、林草地及其他用地呈减少趋势;11年间,旅顺区地表温度整体逐渐升高;各用地的地表温度呈现出“建设用地和其他用地>耕地和园地>林草用地和水域”状态。

With the rapid expansion of urban space,land use has undergone a tremendous transformation,and urban climate and ecological environment issues have become increasingly prominent.Taking Lvshun District of Dalian as an example,this paper uses the single window algorithm to perform surface temperature inversion based on the data of 2005 and 2016,and explores the spatial and temporal differentiation characteristics of land use and surface temperature in Lvshun District through GIS spatial analysis method.From 2005 to 2016,the construction land and water area of Lvshun District increased,and the area increased by 9.51 km2 and 13.19 km2 respectively;the cultivated land,forest grassland and other land use showed a decreasing trend;in 11 years,the surface temperature of Lvshun District gradually increased;the surface temperature of each land uses the status of"construction land and other land use>cultivated land and garden land>forest and grass land and waters".