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ISSN : 2287-8327

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Vol.28 No.3
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Relationship between the Aboveground Vegetation Structure and Fine Roots of the Topsoil in the Burnt Forest Areas, Korea

Journal of Ecology and Environment / Journal of Ecology and Environment, (P)2287-8327; (E)2288-1220
2005, v.28 no.3, pp.149-156


& (2005). Relationship between the Aboveground Vegetation Structure and Fine Roots of the Topsoil in the Burnt Forest Areas, Korea. Journal of Ecology and Environment, 28(3), 149-156.
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Abstract

This study was conducted to elucidate the relationship between the aboveground vegetation structure and fine roots of the topsoil (<15 cm), and thereafter to obtain the regression models for the estimation of the fine roots of the topsoil using the aboveground vegetation values in the burned forest areas, Korea. The FRT (fine roots of the top soil) as well as the aboveground vegetation structure showed spatial variation in the earlier successional stages after forest fire. The fine roots (<2 mm) of the topsoil in the earlier successional stages than the first 3 year after forest fire showed the range from 3 to 166 g DM/m2. The FRT in the naturally regenerated sites and planted sites after forest fire was closely correlated with the vegetation indices, especially Ivc, representing the development status of the aboveground vegetation. The FRT in the terrace seeding work sites after forest fire was closely correlated with year elapsed after terrace seeding work. The FRT in the terrace seeding work sites showed the much higher values because of the vigorous growth of grass species than the other sites. In the naturally regenerated sites, the FRT showed the parabola form according to the increment of aboveground vegetation value (Ivc). Although the aboveground vegetation value (Ivc) showed a tendency to increase logarithmically during the secondary succession after forest fire, the estimated fine roots of the topsoil was depicted the parabola form showing the gradual increment until the first 15 years and slight decrease thereafter. Decrease of FRT in the later successional stage showing the high vegetation value may be caused by increment of the woody species contribution to the vegetation value (Ivc). Our results represented that the boveground vegetation value (Ivc) can be used to the estimation of the fine roots of the topsoil in burned forest areas

keywords
Erosion, Fine roots, Fire, Succession, Topsoil, Vegetation structure, Vegetation value

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