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[48-1/32]해안사구에서 생장 및 생리적 특성을 적용한 귀화식물 관리방안
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   04-해안사구에서(hj).105410.pdf (582.4K) [28] DATE : 2015-04-07 18:48:54
Naturalized plants are invaded through various routes and distributed throughout the nation. They
are also invaded in the sand dune ecosystem and poses a threat ecological niche of indigenous sand dune
plants. We studied the effects of salt stress on the plant growth to suggest the management plans of naturalized
plants in the sand dune ecosystem. As a result of germination experiment according to the salt gradient, germination
rate decreased as the higher concentration and tolerance range was up to 160 mM. As a result of seedling
experiment according to salt gradient, mortality rate was up to 90% from 0 mM to 200 mM and 100%
over 300 mM. The day of first death with different concentration was 18.5 days in 100 mM and 6 days in 800
mM since the experiment has started. In addition, the day of last death with different concentration was 29.5
days in 100 mM and 6 days in 800 mM. Therefore, two stages of management plans would be effective. The
first one is to suppress the germination by salt spray over 170 mM before germination. The other one is to
wither seedlings in a short period by salt spray over 600 mM.