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A
Study on then Seeding
of Zoysia japonica and Woody Plants for the Revegetation
of Rock-exposed-slopes by Natural Topsoil Restoration
Methods
Nam,
Sang-Joon1) · Kim, Nam-Choon2) 1)Hyunwoogreen
Co.,Ltd · 2)Division of Plant Resources,
Coll. of Agri., Dankook Univ.
ABSTRACT
This
study was conducted to find out the possibility of seeding
of Zoysia japonica and woody plants for the revegetation
of rock-exposed-cutslopes by Natural Topsoil Restoration
Methods(NTRM). The 5cm thick layer of artificial soil
was attached at rock-exposed cutslopes for growth of
Zoysia japonica and native woody plants by NTRM. The
main results were summarized as follows.
1.
Artificial soil attached at rock-exposed-slopes by NTRM
was not eroded until recovered by Zoysia japonica and
native woody plants. It shows extremely low soil erodibility.
2.
One Year later after seeding, woody plants show 100%
ground coverage. But, in early stage, they grew more
quickly at northwest slopes than at southeast slopes.
3.
In seeding of Zoysia japonica, it grew more quickly
at southeast slopes than at northwest slopes. Also,
it grew better at lower part of the slopes than at middle
part of the slopes.
4.
After one year from seeding, the height of Lespedeza
cyrtobotrya and Indigofera pseudo-tinctoria were longer
than any other plants. The next were Albizzia julibrissin,
Lespedeza cuneata and wild flowers. The tree height
of Rhus chinensis shows 28cm length, so it has enough
possibility to be used for roadside revegetation works.
5.
Lespedeza cyrtobotra and Indigofera pseudo-tinctoria
show different importance values according to slope
aspect. But, they show tendency to outweight the other
plants at all slope aspects
6.
Most of the plants seeded by NTRM were germinated well
and they covered rock-exposed-slopes so quickly and
effectively. Thus it leads to conclusion that the revegetation
methods used in this experiment was a very effective
methods to recover rock-exposed-slopes by seeding of
zoysia jponica and native woody plants.
Key
words : rock-exposed cutslopes, artificial soil, erodibility,
importance value, Natural Top Soil, Restoration Methods
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