Remote sensing and GIS based analysis of urban ecological  network in Pudong New Area, Shanghai

ZHANG Lin; TIAN Bo; ZHOU Yun-Xuan; ZHU Chun-Jiao

doi:10.3969/j.issn.1000-5641.2015.01.000

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Mar. 2015

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Article Navigation > Journal of East China Normal University (Natural Sciences) > 2015 > (1): 240-251

ZHANG Lin, TIAN Bo, ZHOU Yun-Xuan, ZHU Chun-Jiao. Remote sensing and GIS based analysis of urban ecological network in Pudong New Area, Shanghai[J]. Journal of East China Normal University (Natural Sciences), 2015, (1): 240-251. doi: 10.3969/j.issn.1000-5641.2015.01.000

Citation:

ZHANG Lin, TIAN Bo, ZHOU Yun-Xuan, ZHU Chun-Jiao. Remote sensing and GIS based analysis of urban ecological network in Pudong New Area, Shanghai[J]. Journal of East China Normal University (Natural Sciences), 2015, (1): 240-251. doi: 10.3969/j.issn.1000-5641.2015.01.000

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Remote sensing and GIS based analysis of urban ecological network in Pudong New Area, Shanghai

doi: 10.3969/j.issn.1000-5641.2015.01.000

1.
State Key Laboratory of Estuarine and Coastal Research, East China Normal University, Shanghai 200062, China

Received Date: 2014-01-01
Publish Date: 2015-01-25

Abstract

Abstract

Grassland, forest land and wetland are ecological habitats and elements of the basic urban ecological network of Pudong New Area in Shanghai. Due to the rapid growth in population and economy, the builtup area of Pudong New Area expands quickly, which result in the ecological habitats area decrease and fragmentation. The immediate consequences are the lowering of its ecological function and connectivity of the ecological networks. Using high resolution images from satellite FW2 acquired in 2011 and in combination with the ground investigations, we obtain the land use and land cover data of grass lands, forests land and wetlands by applying objectoriented remote sensing classification method and visualpostprocessing method. Supported by GIS techniques, we useseveral quantitative analysis algorithms, including Multilevel Weights, LeastCost Path and Gravity Model, to quantify the structure ofthe ecological network. The results show that: (1) the total area of grass lands, forest landsand wetlands in Pudong New Area is 179.9103 hm2 , which is 65.41% of the total area; (2) there are few large patches with strong ecological suitability, and imbalanced along north-south direction; (3)the forest landsare the superior landscape type in the ecological network of the study area and make up 51.39% in the 10meterwidth ecological buffer zone; (4)Jiuduansha Wetland and Nanhui Dongtan Wildlife Sanctuary play important roles in ecological niche; and (5)land use structure changes rabidly with the increase of buffer distance, that is the ecological habitats reduce while building area increases.
- ecological network,
- corridor,
- remote sensing,
- GIS

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References(1)

References

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