基于ERDAS与GIS的滁州市植被NDVI时空变化特征研究
Study on Spatial and Temporal Variation Characteristics of NDVI in Chuzhou City Based on ERDAS and GIS
黄海洧 1赵来 1谷家川 1许辉1
作者信息
- 1. 滁州学院地理信息与旅游学院,安徽滁州239000
- 折叠
摘要
[目的]研究滁州市归一化植被指数(NDVI)时空分布规律,为今后有针对性地改善滁州市的植被资源乃至生态系统提供理论依据.[方法]运用ERDAS和GIS技术,选取2001～2010年滁州市MODIS影像数据,得到2001～2010年滁州市的NDVI,并分析了NDVI时空变化的特征.[结果]从时间上看,2001～2010年滁州市植被NDVI平均值整体呈上升趋势,其中2001年植被NDVI平均值为0.468 1,2010年达0.681 3,年均增加率5.06％;从空间上看,滁州市植被NDVI的空间分布格局产生了较大变化,呈现东部和东北部增加,北部和西南部减少的趋势,中部和南部较为稳定.[结论]2001～2010年滁州市植被NDVI总体呈上升趋势,且植被起伏较大,区分较明显.
Abstract
[Objective] The aim was to study the temporal and spatial distribution law of vegetation NDVI in Chuzhou City,and provide theoretical basis for improving vegetation and ecosystem in Chuzhou City.[Method] Using ERDAS and GIS technology,choosing MODIS data in Chuzhou City during 2001-2010,NDVI was obtained,the temporal and spatial variation characteristics were analyzed.[Result] Seeing from time,the overall trend of NDVI mean was upward,NDVI in 2001 was 0.468 1 and in 2010 was 0.681 3,annual average increase rate was 5.06％;From the aspect of space,NDVI spatial pattern of Chuzhou achieved a major change.The spatial distribution reflected an increase in east and northeast,but a decline in north and southwest,remained stable in center and south.[Conclusion] The overall trend of NDVI in Chuzhou City during 2001-2010 is upward,vegetation fluctuation is larger,and the distinction is obvious.
关键词
滁州市/植被覆盖度/NDVI/时空变化Key words
Chuzhou City/Vegetation coverage/NDVI/Temporal and spatial variation引用本文复制引用
基金项目
滁州学院大学生创新创业训练计划资助项目(2015CXXL040)
安徽省省级大学生创新创业训练计划项目(201510377036)
国家自然科学基金(41271545)
校级一般教学研究项目(2015jyy015)
出版年
2016
国家科技期刊平台
NSTL
维普
万方数据