Comparison of NDVI and EVI based on EOS/MODIS data
Received date: 2006-10-01
Revised date: 2007-01-01
Online published: 2007-02-20
As the continuation and development of NOAA/AVHRR NDVI, the normalized difference vegetation index (NDVI) and enhanced vegetation index (EVI) of MODIS have been comprehensively used in many fields. In order to investigate the difference between NDVI and EVI derived from MODIS, comparative study of these two vegetation indices was conducted by statistics and geo- statistic methods (semi- variance function). By the comparison of the two kinds of vegetation index distribution maps in different period, it is demonstrated that EVI improve the sensitivity for well- vegetated areas where NDVI is saturated when plants grow well, which will be helpful in monitoring plants growth status. At same resolution, i.e. 250m, 500m and 1000m, by means of the geo- statistics, the results show that range, variance and variation coefficient of EVI is higher than that of NDVI, the value of NDVI is even, and its spatial relativity is higher than that of EVI, which all show that EVI is more sensitive to the spatial heterogeneity of plants in research area.
LI Hongjun, ZHENG Li, LEI Yuping, LI Chunqiang, ZHOU Kan . Comparison of NDVI and EVI based on EOS/MODIS data[J]. PROGRESS IN GEOGRAPHY, 2007 , 26(1) : 26 -32 . DOI: 10.11820/dlkxjz.2007.01.003
[1] Jordan C F. Derivation of leaf area index from quality of light on the forest floor. Ecology, 1969,50:663~666.
[2] Deering D W. Rangeland reflectance characteristics measured by aircraft and spacecraft sensors.Texas A&M University, College Station, TX,1978,338.
[3] 王正兴, 刘闯, Huete Alfredo. 植被指数研究进展: 从AVHRR- NDVI 到MODIS- EVI. 生态学报, 2003,23(5):979~986.
[4] Liu H Q, Huete A R. A feedback based modification of the NDVI to minimize canopy background and atmospheric noise. IEEE Tans. Geosci. Remote Sens., 1995, 33:457～465.
[5] 郭铌. 植被指数及其研究进展. 干旱气象, 2003, 21( 4) : 71~75.
[6] 王正兴, 刘闯, 陈文波等. MODIS 增强型植被指数EVI 与NDVI 初步比较. 武汉大学学报( 信息科学版) 2006, 31 ( 5) : 407~410.
[7] 程乾, 黄敬峰, 王人湖. MODIS 和NOAA/AVHRR 植被指数差异初步研究. 科技通报, 2005, 21( 2) : 205~209.
[8] 张霞, 张兵, 卫征等. MODIS 光谱指数监测小麦长势变化研究. 中国图象图形学报, 2005, 10( 4) : 420~424.
[9] 毛任钊, 李红军. 基于TM数据源的农田光谱异质性研究. 中国生态农业学报, 2003, 11( 3) : 106~109.
[10] 李哈滨, 王政权, 王庆成. 空间异质性定量研究理论与方法. 应用生态学报, 1998, 9( 6) : 651~657.
/
| 〈 |
|
〉 |