Trends in vegetation change under different karst terrain conditions, southwest China

Xiaowei Tong; Kelin Wang; Yuemin Yue; Chujie Liao

doi:10.1117/12.2031737

26 October 2013 Trends in vegetation change under different karst terrain conditions, southwest China

Xiaowei Tong, Kelin Wang, Yuemin Yue, Chujie Liao

Proceedings Volume 8921, MIPPR 2013: Remote Sensing Image Processing, Geographic Information Systems, and Other Applications; 89211M (2013) https://doi.org/10.1117/12.2031737
Event: Eighth International Symposium on Multispectral Image Processing and Pattern Recognition, 2013, Wuhan, China

Abstract

Trends in vegetation change and their relationships with terrain conditions are significant to understand and evaluate the efficiency of ecological engineering implemented in karst regions, Southwest China. This study aimed to identify vegetation change trends in Hechi, Guangxi, China using time-series of SPOT-VGT NDVI data (1999-2010) and DEM. Linear trend analysis was applied to examine NDVI change trends. The results indicated that most of NDVI values had increased during this time period. There were spatial variations in NDVI change trends, which could be partiallly explained by different karst terrain conditions. The areas of most obviously positive trends in NDVI change were found at the elevation of 500-1000m and the relief amplitude between 200 and 500 m. Negative trends in NDVI change were appeared on slopes of south (sunlit) and west (semi-sunlit) aspect and at the elevation of 200 - 500 m, where were mainly due to human activities.

Citation Download Citation

Xiaowei Tong, Kelin Wang, Yuemin Yue, and Chujie Liao "Trends in vegetation change under different karst terrain conditions, southwest China", Proc. SPIE 8921, MIPPR 2013: Remote Sensing Image Processing, Geographic Information Systems, and Other Applications, 89211M (26 October 2013); https://doi.org/10.1117/12.2031737

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