한국환경과학회지 제28권 제12호 (p.1061-1069)

|ORIGINAL ARTICLE|
새만금 간척지에서 염농도에 따른 갈대(Phragmites australis) 유묘 생장 및 분해 특성

Decomposition Characteristics and Seedling Growth of Common Reed (Phragmites australis) by Salt Concentration in Saemangeum Reclaimed Land
키워드 :
Common reed,Solution salt concentration,Reclaimed soil. Decomposition,Salinity

목차

Abstract
1. 서 론
2. 재료 및 방법
   2.1. 갈대 유묘생장에 미치는 관수액 염농도와 이식방법구명
   2.2. 새만금 간척지에서 갈대 환원시 토양 조건에 따른분해 특성 비교
   2.3. 토양 및 식물체 조사
   2.4. 통계분석
3. 결과 및 고찰
   3.1. 갈대 유묘생장에 미치는 관수액 염농도와 이식방법구명
   3.2. 새만금 간척지에서 갈대 환원시 토양 조건에 따른분해 특성 비교
4. 결 론
REFERENCES

초록

Common reed (Phragmites australis) is widespread in reclaimed land and wetland habitats. Every year, the common reed produces extensive colonies by means of underground rhizomes and ground-surface stolons. From an agricultural point of view, the common reed's large biomass is a good material for supplying organic matter. However, it has not yet been studied in terms of seedling production, transplanting conditions, and decomposition characteristics in reclaimed land. Seeds were harvested from the native common reed in Saemangeum, South Korea, the previous year and stored on an open field. The seeds were sowed in the greenhouse at the beginning of April. Common reed decomposition was studied from June to September, with the use of coarse mesh (5 mm) stem litterbags, on three samping dates and with five replicate packs per sample. These packs were dug in five soil condition (low-salinity topsoil, subsoil, high-salinity topsoil, subsoil, paddy topsoil) to 0.2 m and 0.4 m depth. The highest germination rate of common reed seeds was observed in non-salt solution, but the exhibited germination rate was 70% at 9.38 dS m-1. The plant height of young reed decreased steadily with increasing salinity, but leaf number did not decrease by 9.38 dS m-1. The survival rate of the two-year-old reed was 83.3%, which was 35% higher than that of the one-year reed. The transplant success rate was 0% in the no vinyl mulching in the soil, but the first year and second year seedlings survived rates were 63% and 83.3%, respectively, in vinyl mulching. Common reed decomposition rates were faster low salinity than high salinity. All nutrient contents were found to fluctuate significantly with time by soil conditions. We also need to study the growth rate of reed transplanting seedlings by soil moisture contents and the comparison of degradation in common reed tissues.