Integrating AVHRR and MODIS data to monitor NDVI changes and their relationships with climatic parameters in Northeast China

被引：261

作者：

Mao, Dehua ^{[1
,2
]}

Wang, Zongming ^{[1
]}

Luo, Ling ^{[1
]}

Ren, Chunying ^{[1
]}

机构：

[1] Chinese Acad Sci, NE Inst Geog & Agroecol, Key Lab Wetland Ecol & Environm, Changchun 130012, Peoples R China

[2] Chinese Acad Sci, Grad Univ, Beijing 100049, Peoples R China

来源：

INTERNATIONAL JOURNAL OF APPLIED EARTH OBSERVATION AND GEOINFORMATION | 2012年 / 18卷

基金：

中国国家自然科学基金;

关键词：

AVHRR GIMMS NDVI; MODIS NDVI; Temperature; Precipitation; Northeast China; DIFFERENCE VEGETATION INDEX; TIME-SERIES; SPOT-VEGETATION; HIGH-LATITUDES; TRENDS; CONSISTENCY; PERMAFROST; SAHEL;

D O I：

10.1016/j.jag.2011.10.007

中图分类号：

TP7 [遥感技术];

学科分类号：

081102 ; 0816 ; 081602 ; 083002 ; 1404 ;

摘要：

On the basis of AVHRR GIMMS NDVI and MODIS NDVI, we constructed monthly NDVI sequences covering Northeast China from 1982 to 2009 using a per-pixel unary linear regression model. The expanded NDVI passed the consistency check and were well used for analysis. The monthly NDVI trends were highly correlated with climatic changes. Spatially averaged NDVI in summer exhibited a downward trend with increased temperature and significantly decreased precipitation in the 28 years. NDVI trends were spatially heterogeneous, corresponding with the regional climatic features of different seasons. NDVI for the 95 meteorological stations exhibited significant correlations with monthly mean temperature and monthly precipitation during the study period. The NDVI-temperature correlation was stronger than NDVI-precipitation correlation in most stations and for all vegetation types. Different vegetation types showed various spatial responses to climatic changes. (C) 2011 Elsevier B.V. All rights reserved.

引用

页码：528 / 536

页数：9

共 37 条

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