[1]YANG Li-jun,MA Ming-dong,TANG Li-jun.Research on Wetland Vegetation Classification of Chongming Eastern Tidal Flat Based on TM Image[J].Research of Soil and Water Conservation,2013,20(01):126-130.
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Research of Soil and Water Conservation[ISSN 1005-3409/CN 61-1272/P] Volume:
20
Number of periods:
2013 01
Page number:
126-130
Column:
Public date:
2013-02-28
- Title:
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Research on Wetland Vegetation Classification of Chongming Eastern Tidal Flat Based on TM Image
- Author(s):
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YANG Li-jun1,2, MA Ming-dong2, TANG Li-jun3
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1. College of Hydrology and Water Resources, Hohai University, Nanjing 210098, China;
2. College of Geographical and Biological Information, Nanjing University of Posts and Telecommunications, Nanjing 210003, China;
3. Shanghai Xiangyang Water Conservancy Survey and Design Co., Ltd., Shanghai, 202156, China
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- Keywords:
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vegetation classification; knowledge discovery; vegetation index; water index; neural network
- CLC:
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TP751
- DOI:
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- Abstract:
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Remote sensing classification of wetland vegetation is of great importance to wetland ecosystem conservation and management. The classification of wetland vegetation are difficult because of the intricate environment and the similar vegetation spectrum. Taking Chongming eastern tidal flat wetland as the study site, the spectral curves of on-the-spot survey and remote sense of wetland vegetation was analyzed by spectrometers and Landsat 5 Image. Based on the spectral curves, wetland vegetation was classified by methods of knowledge discovery-based information extracting. Firstly, information of wetland vegetation was extracted from remote images; then vegetation index such as NDVI and DVI was calculated and evaluated about the distinguishability of typical vegetation; and finally, taking the best vegetation index as auxiliary information, wetland vegetation was classified by neural network supervised method. The classification accuracy of this method was high, and it reached 86.5%, indicating that this method was universality, and can provide theoretical basis and technical way of automatic or semi-automatic vegetation classification and identification.