论文

Vegetation Change in the Three Gorges Reservoir Area of Chongqing

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  • 1. School of Resource and Environment, Southwest University, Chongqing 400716;
    2. School of Computer and Information Science, Southwest University, Chongqing 400716;
    3. Key Laboratory of Digital Agriculture of Chongqing, Chongqing 400716

Received date: 2009-04-24

  Revised date: 2009-07-12

  Online published: 2010-01-20

Abstract

The article researched the vegetation changes in the Three Gorges Reservoir Area of Chongqing through analysing the time series of NDVI data in 1998-2007, the relationship of the NDVI with meteorological factors, the change rate of NDVI and the relationship between NDVI altitude by using the 1 km SPOT/VGT-NDV I data smoothed by Savitzky-Golay filter. The results show that the annual NDVI variation in the Three Gorges Reservoir Area of Chongqing is relatively stable, while it decreases in the northeastern and southeastern areas and increases in the western area. Furthermore, the spatial and temporal changes of NDVI are mainly caused by temperature and precipitation. The temperature plays a more important role than precipitation in NDVI’s change, the altitude and NDVI also has a better correlation.

Cite this article

LI Hui-min, LIU Hong-bin, WU Wei . Vegetation Change in the Three Gorges Reservoir Area of Chongqing[J]. SCIENTIA GEOGRAPHICA SINICA, 2010 , 30(1) : 119 -123 . DOI: 10.13249/j.cnki.sgs.2010.01.119

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