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Scale issues of wetland classification and mapping using remote sensing images: A case of Honghe National Nature Reserve in Sanjiang Plain, Northeast China

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Abstract

Wetland research has become a hot spot linking multiple disciplines presently. Wetland classification and mapping is the basis for wetland research. It is difficult to generate wetland data sets using traditional methods because of the low accessibility of wetlands, hence remote sensing data have become one of the primary data sources in wetland research. This paper presents a case study conducted at the core area of Honghe National Nature Reserve in the Sanjiang Plain, Northeast China. In this study, three images generated by airship, from Thematic Mapper and from SPOT 5 were selected to produce wetland maps at three different wetland landscape levels. After assessing classification accuracies of the three maps, we compared the different wetland mapping results of 11 plant communities to the airship image, 6 plant ecotypes to the TM image and 9 landscape classifications to the SPOT 5 image. We discussed the different characteristics of the hierarchical ecosystem classifications based on the spatial scales of the different images. The results indicate that spatial scales of remote sensing data have an important link to the hierarchies of wetland plant ecosystems displayed on the wetland landscape maps. The richness of wetland landscape information derived from an image closely relates to its spatial resolution. This study can enrich the ecological classification methods and mapping techniques dealing with the spatial scales of different remote sensing images. With a better understanding of classification accuracies in mapping wetlands by using different scales of remote sensing data, we can make an appropriate approach for dealing with the scale issue of remote sensing images.

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Authors and Affiliations

  1. Base of State Key Laboratory of Urban Environmental Process and Digital Modeling, Capital Normal University, Beijing, 100048, China

    Huili Gong, Cuicui Jiao, Demin Zhou & Na Li

  2. Key Laboratory of 3D Information Acquisition and Application of Ministry of Education, Capital Normal University, Beijing, 100048, China

    Huili Gong, Cuicui Jiao, Demin Zhou & Na Li

Authors
  1. Huili Gong
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  2. Cuicui Jiao
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  3. Demin Zhou
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  4. Na Li
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Correspondence to Demin Zhou.

Additional information

Foundation item: Under the auspices of National Natural Science Foundation of China (No. 40871241, 40771170), National High Technology Research and Development Program of China (No. 2007AA12Z176)

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Gong, H., Jiao, C., Zhou, D. et al. Scale issues of wetland classification and mapping using remote sensing images: A case of Honghe National Nature Reserve in Sanjiang Plain, Northeast China. Chin. Geogr. Sci. 21, 230–240 (2011). https://doi.org/10.1007/s11769-011-0461-5

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  • DOI: https://doi.org/10.1007/s11769-011-0461-5

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