Trend analysis for evaluating the consistency of Terra MODIS and SPOT VGT NDVI time series products in China

CORC > 烟台海岸带研究所 > 中国科学院烟台海岸带研究所 > 中科院海岸带环境过程与生态修复重点实验室 > 海岸带信息集成与综合管理实验室

	Trend analysis for evaluating the consistency of Terra MODIS and SPOT VGT NDVI time series products in China
	An, Youzhi 1,2; Gao, Wei 1,2,3; Gao, Zhiqiang3,4 ; Liu, Chaoshun 1,2; Shi, Runhe 1,2
刊名	FRONTIERS OF EARTH SCIENCE
	2015-03-01
卷号	9 期号:1 页码:125-136
关键词	Terra MODIS NDVI SPOT VGT NDVI trend analysis correlation analysis
ISSN号	2095-0195
通讯作者	Gao, ZQ (reprint author), Colorado State Univ, Nat Resource Ecol Lab, Ft Collins, CO 80523 USA. gaoland@gmail.com
产权排序	[An, Youzhi; Gao, Wei; Liu, Chaoshun; Shi, Runhe] E China Normal Univ, Key Lab Geog Informat Sci, Minist Educ, Joint Lab Environm Remote Sensing & Data Assimila, Shanghai 200062, Peoples R China; [An, Youzhi; Gao, Wei; Liu, Chaoshun; Shi, Runhe] Chinese Acad Sci, CEODE, Shanghai 200062, Peoples R China; [Gao, Wei; Gao, Zhiqiang] Colorado State Univ, Nat Resource Ecol Lab, Ft Collins, CO 80523 USA; [Gao, Zhiqiang] Chinese Acad Sci, Yantai Inst Coastal Zone Res, Yantai 264003, Peoples R China
中文摘要	The Normalized Difference Vegetation Index (NDVI) is an important vegetation greenness indicator. Compared to the AVHRR GIMMS NDVI data, the availability of two datasets with 1 km spatial resolution, i.e., Terra MODIS (MOD13A3) monthly composite and SPOT Vegetation (VGT) 10-day composite NDVI, extends the application dimensions at spatial and temporal scales. An overlapping period of 12 years between the datasets now makes it possible to investigate the consistency of the two datasets. Linear regression trend analysis was performed to compare the two datasets in this study. The results show greater consistency in regression slopes in the semi-arid regions of northern China. Alternatively, the results show only slight changes in the Terra MODIS NDVI regression slope in most areas of southern China whereas the SPOT VGT NDVI shows positive changes over a large area. The corresponding regression slope values between Terra MODIS and SPOT VGT NDVI datasets from the linear fit had a fair agreement in the spatial dimension. However, larger positive and negative differences were observed at the junction of the three regions (East China, Central China, and North China). These differences can be partially explained by the positive standard deviation differences distributed over a large area at the junction of these three regions. This study demonstrated that Terra MODIS and SPOT VGT NDVI have a relatively robust basis for characterizing vegetation changes in annual NDVI in most of the semi-arid and arid regions in northern China.
英文摘要	The Normalized Difference Vegetation Index (NDVI) is an important vegetation greenness indicator. Compared to the AVHRR GIMMS NDVI data, the availability of two datasets with 1 km spatial resolution, i.e., Terra MODIS (MOD13A3) monthly composite and SPOT Vegetation (VGT) 10-day composite NDVI, extends the application dimensions at spatial and temporal scales. An overlapping period of 12 years between the datasets now makes it possible to investigate the consistency of the two datasets. Linear regression trend analysis was performed to compare the two datasets in this study. The results show greater consistency in regression slopes in the semi-arid regions of northern China. Alternatively, the results show only slight changes in the Terra MODIS NDVI regression slope in most areas of southern China whereas the SPOT VGT NDVI shows positive changes over a large area. The corresponding regression slope values between Terra MODIS and SPOT VGT NDVI datasets from the linear fit had a fair agreement in the spatial dimension. However, larger positive and negative differences were observed at the junction of the three regions (East China, Central China, and North China). These differences can be partially explained by the positive standard deviation differences distributed over a large area at the junction of these three regions. This study demonstrated that Terra MODIS and SPOT VGT NDVI have a relatively robust basis for characterizing vegetation changes in annual NDVI in most of the semi-arid and arid regions in northern China.
学科主题	Geosciences, Multidisciplinary
研究领域[WOS]	Geology
关键词[WOS]	VEGETATION INDEXES ; LAND DEGRADATION ; AVHRR GIMMS ; PHENOLOGY ; CLIMATE ; AFRICA ; SAHEL
收录类别	SCI
语种	英语
WOS记录号	WOS:000349441200011
内容类型	期刊论文
源URL	[http://ir.yic.ac.cn/handle/133337/8590]
专题	烟台海岸带研究所_海岸带信息集成与综合管理实验室
作者单位	1.E China Normal Univ, Key Lab Geog Informat Sci, Minist Educ, Joint Lab Environm Remote Sensing & Data Assimila, Shanghai 200062, Peoples R China 2.Chinese Acad Sci, CEODE, Shanghai 200062, Peoples R China 3.Colorado State Univ, Nat Resource Ecol Lab, Ft Collins, CO 80523 USA 4.Chinese Acad Sci, Yantai Inst Coastal Zone Res, Yantai 264003, Peoples R China
推荐引用方式 GB/T 7714	An, Youzhi,Gao, Wei,Gao, Zhiqiang,et al. Trend analysis for evaluating the consistency of Terra MODIS and SPOT VGT NDVI time series products in China[J]. FRONTIERS OF EARTH SCIENCE,2015,9(1):125-136.
APA	An, Youzhi,Gao, Wei,Gao, Zhiqiang,Liu, Chaoshun,&Shi, Runhe.(2015).Trend analysis for evaluating the consistency of Terra MODIS and SPOT VGT NDVI time series products in China.FRONTIERS OF EARTH SCIENCE,9(1),125-136.
MLA	An, Youzhi,et al."Trend analysis for evaluating the consistency of Terra MODIS and SPOT VGT NDVI time series products in China".FRONTIERS OF EARTH SCIENCE 9.1(2015):125-136.