文档介绍：
基于 Landsat-7 ETM+影像的上海市植被覆
盖研究#
彭永明1,孟飞2**
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10
(1. 华东师范大学地理信息科学教育部重点实验室,上海 200241;
2. 山东建筑大学土木工程学院,济南 250101)
摘要:植被覆盖度是植被群落覆盖地表状况的一个综合量化指标。研究植被覆盖度的估算及
其变化,对生态系统环境变化起重要作用。本文介绍了 NDVI 指数及植被覆盖度遥感监测的
基本方法,以上海市为例,利用多时相 ETM+遥感影像,提取影像 NDVI 值,建立模型反演
得到植被覆盖度,进而分析其变化特征及导致其变化的因素。研究发现上海市的植被覆盖度
的影响因素主要是经济发展水平,人口数量,土地利用状况等人为因素,降水量、平均温度
等自然因素对其影响很小。
关键词:遥感;ETM+影像;NDVI;植被覆盖度;上海市
中图分类号:K909
15
STUDY ON VEGETATION COVERAGE IN SHANGHAI
BY LANDSAT-7 ETM+ IMAGES
PENG Yongming1, MENG Fei2
(1. Key Laboratory of Geographical Information Science, Ministry of State Education of
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25
30
35
40
China,East China Normal University, ShangHai 200241;
2. School of civil enginering,Shandong Jianzhu Univesity, Jinan 250101)
Abstract: Vegetation coverage is prehensive quantitative index which describes the earth's
surface situation covered by estimation and change of vegetation
coverage is important in the study of ecological paper introduces the concept of
NDVI and the basic method of measuring vegetation Shanghai as an
example,NDVI and vegetation coverage of the year 2009 and 2000 are calculated based on a
estimation ,the dynamic characteristics of vegetation coverage and its agents are being
last,Studies have found that the main influence factors of vegetation coverage in
Shanghai is man-made factors,the econ