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Proceedings Paper

The dynamics of land cover change pattern and landscape fragmentation in Jiuzhaigou Nature Reserve, China
Author(s): Yunqing Hao; Jinxi Wang; Hong Jiang
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Paper Abstract

Nature reserves are facing a very challenging conflict between conservation and development today. The protection effect of Jiuzhaigou Nature Reserve has received considerable attention, especially in view of its stimulating tourism after the 1990s. Remote sensing data from 1974, 1994 and 2002 were chosen for the analysis of this reserve, since they closely represented the vegetation situation before and after felling, as well as the disturbance from the flush of tourism. We find that the quality and quantity of the forest in Jiuzhaigou Nature Reserve continues to decline, owing to the conifer area and whole forest area constantly shrinking, as well as the landscape fragmentation increasing. The rate of loss of forest in the second period (1994-2002) had showed down much than that in the first period (1974-1994), due to nature protection. Shrubland area continued to increase throughout the two periods, with an increased speed in the second period which was about 3.5 times that in the first period. The treeline was consistently retreating, contributing a total of 467.96 ha of conifer forest lost. However, the causes involved in tree mortality and the resulting regression of the treeline are not clear. In any case, under the general background of global warming, human impact undoubtedly should have direct or indirect cause dramatic consequences for the forest in this very sensitive zone, while there are many uncertainties in the behaviour of high mountain ecosystems. Keywords: Jiuzhaigou Nature Reserve, Vegetation, Habitats fragment,

Paper Details

Date Published: 30 October 2009
PDF: 17 pages
Proc. SPIE 7498, MIPPR 2009: Remote Sensing and GIS Data Processing and Other Applications, 74983P (30 October 2009); doi: 10.1117/12.830050
Show Author Affiliations
Yunqing Hao, Nanjing Univ. (China)
Sichuan Academy of Forestry (China)
Jinxi Wang, Sichuan Academy of Forestry (China)
Hong Jiang, Nanjing Univ. (China)
Zhejiang Forestry Univ. (China)


Published in SPIE Proceedings Vol. 7498:
MIPPR 2009: Remote Sensing and GIS Data Processing and Other Applications

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