干旱区生态环境知识资源中心(Arid): 不同等级石漠化区MODIS-NDVI与MODIS-EVI对比分析

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	不同等级石漠化区MODIS-NDVI与MODIS-EVI对比分析
其他题名	Comparison between MODIS-NDVI and MODIS-EVI in Kasrt Rocky Desertification Area
	陈燕丽; 莫伟华; 莫建飞; 黄永璘; 罗永明
来源期刊	遥感技术与应用
ISSN	1004-0323
出版年	2014
卷号	29 期号:6 页码:943-948
中文摘要	利用2001~2010年10 a的MODIS资料,比较分析广西喀斯特不同等级石漠化区MODIS-NDVI和MODIS-EVI的时间变化特征差异,利用全时间序列及16 d 10 a均值序列分析NDVI和EVI之间的相关关系,比较线性及对数相关模型对两种植被指数相关关系的拟合效果,结果表明:石漠化等级由重度到潜在,两者之间的差值也随着植被覆盖度的增加而增大,植被覆盖度越低,NDVI和EVI所表征的植被变化特征越相似。NDVI的峰值出现时间多晚于EVI且其反映的植被变化趋势与实况更吻合,但其NDVI偏高;各等级石漠化的两种时间序列NDVI与EVI的对数相关关系优于线性相关,两种植被指数的相关性随着植被覆盖度的降低而增大,但全时间序列中轻度、中度石漠化相关性变化规律与16 d 10 a均值序列相反。
英文摘要	In this paper,MODIS data from 2001 to 2010 is used to analyze MODIS-NDVI and MODIS-EVI time-varying characteristic differences between different levels of karst rocky desertification area in Guangxi. The all-time series and 16d average sequence of 10 years are used to analyze the correlation between NDVI and EVI. Fitting results of NDVI and EVI series,including logarithmic model and linear regression model are compared. The results shows that : With the rocky desertification levels from severe to potentially, the difference between NDVI and EVI increases with the increasing of vegetation coverage. That is as the lower of the vegetation coverage,vegetation characteristics change exhibit more similar between NDVI and EVI. The NDVI peak value appears later than that of EVI. Vegetation changes trends display in NDVI sequence are more consistent with ground surveys, but its value are higher. Logarithmic model is better than linear regression model for fitting the relationship between NDVI and EVI of different levels of rocky desertification. The corelation between NDVI and EVI increases with the redution of vegetation coverage for both series. The corelation between the two indices for mild and moderate rocky desertification are opposite for the two series.
中文关键词	石漠化
英文关键词	MODIS NDVI EVI Karst rocky-desertification MODIS NEVI EVI
语种	中文
国家	中国
收录类别	CSCD
WOS类目	REMOTE SENSING
WOS研究方向	Remote Sensing
CSCD记录号	CSCD:5330345
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/231968
作者单位	广西壮族自治区气象减灾研究所, 国家卫星气象中心遥感应用试验基地, 南宁, 广西 530022, 中国
推荐引用方式 GB/T 7714	陈燕丽,莫伟华,莫建飞,等. 不同等级石漠化区MODIS-NDVI与MODIS-EVI对比分析[J],2014,29(6):943-948.
APA	陈燕丽,莫伟华,莫建飞,黄永璘,&罗永明.(2014).不同等级石漠化区MODIS-NDVI与MODIS-EVI对比分析.遥感技术与应用,29(6),943-948.
MLA	陈燕丽,et al."不同等级石漠化区MODIS-NDVI与MODIS-EVI对比分析".遥感技术与应用 29.6(2014):943-948.