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http://dx.doi.org/10.14249/eia.2016.25.6.384

Development of Vegetation Indicator for Assessment of Naturalness in Stream Environment  

Chun, Seung-Hoon (Dept. Landscape Architecture, Gachon University)
Chae, Soo-Kwon (Dept. Environmental Health & Safety, Eulji University)
Publication Information
Journal of Environmental Impact Assessment / v.25, no.6, 2016 , pp. 384-401 More about this Journal
Abstract
The vegetation assessment indicator has been developed recently as a biological part of the integrated assessment system for river environment to improve the efficiency of river restoration projects. This study carried out to test the vegetation assessment indicator and to reset its grade criteria on experimental streams. We classified and mapped vegetation communities at the level of physiognomic-floristic composition by each assessment unit. A total of 204 sampling quadrats were set up on the 68 assessment units at 5 experimental streams. By analyzing the vegetation data collected, we examined the appropriate numbers of sampling quadrats, the criteria of vegetation index score, classification of vegetation community, and grade criteria for vegetation assessment. The developed vegetation assessment indicator composed with the vegetation complexity index (VCI), the vegetation diversity index (VDI), and the vegetation naturalness index (VNI) was proved to reflect the current conditions of the streams sufficiently. The contribution of vegetation naturalness index to grading by vegetation assessment indicator was larger, but three indexes were closely correlated to each other. Also there was more clearer discrimination of grading with the application of adjusted criteria of vegetation assessment indicator and the standardized classification of vegetation community, but the stream segment type did not influence the vegetation assessment grade significantly.
Keywords
Classification of vegetation community; Assessment unit; Vegetation diversity index; Vegetation complexity index; Vegetation naturalness index; Vegetation assessment indicator; Grading;
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Times Cited By KSCI : 3  (Citation Analysis)
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