石河子市热岛效应亮温反演特征及趋势预测

Brightness Temperature Inversion of Heat Island Characteristics and Its Trend Prediction in Shihezi

为探求石河子市热岛效应变化特征及其影响因子,文章以1989-2014年Landsat TM/ETM+遥感影像反演出同期石河子市亮度温度。通过对热岛效应影响因素分析,结果表明:(1)1989-2014年间,石河子市热岛强度逐年增强,热岛效应由散点状到片状的空间变化特征;(2)人口、经济、NDVI、城市城建成区面积等因素是热岛效应的主要因素,其中城市建成区面积、人口、经济与热岛强度成正比,NDVI与城市热岛效应呈负相关,适当增加城市绿地对于缓解城市热岛效应具有积极作用。(3)从石河子市的热岛效应综合发展指数来看,石河子市正处在高速发展中,热岛效应强度会不断提高,但速率会减缓。

The study is based on the Landsat TM/ETM^＋ remote sensing image from 1989 to 2014,inversing brightness temperature over the same period,in order to explore the heat island effect change characteristics and influence factors in Shihezi. By analyzing the factors affecting heat island effect,the results indicated that the intensity of heat island enhanced year by year in Shihezi,with spatial variation characteristics of heat island effect from scattered point to flake from 1989 to2014. The main factors of heat island effect include population,economy,NDVI,urban city area and so on. Urban city area,population and economy is proportional to the intensity of heat island,while NDVI is negatively correlated with the urban heat island effect. The city integrated development index indicates that it is in rapid development,the heat island intensity will continue to increase,but the rate will slow down.