摘要
植被指数模型的应用领域已经愈加广泛,利用陆地地表温度反演与归一化植被指数在空间变化上具有相反趋势的特点,将归一化植被指数引入到城市热岛效应现象评价中。基于CBERS CCD遥感影像数据源,通过阈值划分及水体提取建立人工决策树,对城市热岛效应进行定量分析与总体评价,建立一定的评价指标,为城市的环境监测、管理及规划提供依据。
The application of vegetation index model is becoming wider. Normalized difference of vegetation index is introduced into the assessment of urban heat island effect exploiting the feature of land surface temperature retrieval that it opposites the normalized difference of vegetation index in spatial changes trend. Based on CBERS CCD remote sensing data source, this paper establishes deci- sion tree through threshold divisions and water body extraction, carries out quantitative analysis and overall assessment of urban heat island effect, set up evaluation index, and provides basis for the monitor, management, and planning of city environment.
出处
《测绘与空间地理信息》
2012年第9期18-20,25,共4页
Geomatics & Spatial Information Technology
基金
高等学校博士学科点专项科研基金资助课题(20090095110002)
国家自然科学基金项目(41071273)
中央高校基本科研业务费专项资金项目(2010 QNA 21)资助
关键词
热岛效应
归一化植被指数
CBERS
决策树
urban heat island effect
normalized difference of vegetation index
CBERS
decision tree
