当前位置: 首页 > 文章 > 西安市主城区不透水面光谱分析与识别制图 陕西林业科技 2019 (5) 32-38
Position: Home > Articles > 西安市主城区不透水面光谱分析与识别制图 Shaanxi Forest Science and Technology 2019 (5) 32-38

西安市主城区不透水面光谱分析与识别制图

作  者:
王小鸽;薛巍;赵君
单  位:
杨凌职业技术学院生态环境工程学院;西北农林科技大学林学院
关键词:
不透水面;光谱混合分析;最小噪音分量变换;遥感;西安市
摘  要:
城市不透水面在监测城市扩展和解释人类活动对生态环境的影响方面起着非常重要的作用.遥感技术以其时效性和空间强大的观测能力,可迅速从遥感图像中提取城市不透水面信息.本文以西安市主城区为对象,采用最小噪音分量变换法提取了Landsat TM影像中城市不透水面信息,即首先选取最小噪音分量变换后的前3个分量和线性光谱混合模型,计算得出高反照率、低反照率、植被、土壤4个模拟城市不同土地覆盖类型的终端地类分量,再通过综合低反照率、高反照率等2个终端地类得到西安市主城区不透水面的空间分布和面积数据,并以图展示.
作  者:
WANG Xiao-ge;XUE Wei;ZHAO Jun;Yangling Vocational &Technical College;College of Forestry, Northwest A&F University;
关键词:
Impervious surface;;spectral mixture analysis;;minimum noise fraction transform;;remote sensing
摘  要:
Urban impervious surface is important monitoring indicator, reflecting urban expansion and impacts from human activities on the environment. The impervious surface information can be extracted quickly from remote sensing imagery for its time-efficient and high ability of spatial monitoring. In this paper, a minimum noise fraction(MNF) transformation has been applied to a Landsat 5 Thematic Mapper Plus(TM) sub-scene of Xi'an city. The first three components produced from the MNF transformation were selected. Through a linear spectral mixture model, four end members, i.e. low albedo, high albedo, vegetation, and soil were identified to represent the heterogeneous urban land cover types by combining low and high albedo components. Finally the impervious surface fraction was estimated. Extracting impervious surface quickly would provide a foundation for urban construction and green-land planning.

相似文章

计量
文章访问数: 7
HTML全文浏览量: 0
PDF下载量: 1

所属期刊

推荐期刊