摘要
本文利用西安市两期Landsat5 TM影像,提取了西安市土地利用变化信息、NDVI指数、MNDWI指数和地表亮温,并基于移动窗口分析法进行了热岛效应边界的定量研究,旨在为陕西省地理国(省)情监测中环境监测部分探索一些可行的研究方法。研究结果表明:11年间,西安市热岛效应的发展趋势与城市扩张情况基本一致;地表亮温与植被指数和水体指数存在负相关关系,因此增加植被和水体面积有助于调节城市热岛效应的强度。
Based on two different periods Landsat5 TM images in Xi＇ an, this article extracted the change of land use in Xi＇ an, NDVI and MNDWI index, land-surface brightness temperature and quantitatively studied the boundary of urban heat island through moving split-window analysis, in order to research some feasible methods for the environmental monitoring part in geographic national conditions monitoning in Shaanxi Province. The results showed that within in 11 years, the trend of heat island effect and the expansion of urbanization are generally accordant; there is an negative correlation between surface brightness temperature and vegetation index, either the water index. Thereby, increasing the area of vegetation and water areas would help to adjust the intensity of urban heat is- land effect.
出处
《测绘科学》
CSCD
北大核心
2012年第5期148-150,共3页
Science of Surveying and Mapping
