습지식물 번역(한국어 원본)습지식물의 유기물 생산과 분해
갈대 경엽부의 밀도는 동화천 고․저습지와 반월천 고습지에서 4월 이후에 약 100～120개/m2의 범위에서 안정되었으나 반월천 저습지에서는 7월까지 170개/m2까지 증가하였다. 갈대 경엽부의 최대 높이는 동화천 저습지와 반월천 고습지에서 약 340cm로서 동화천 고습지와 반월천 저습지의 약 270cm보다 높았다. 애기부들 경엽부의 밀도는 10월에 30개/m2로서 갈대에 비하여 낮았다.
수생식물의 일차순생산성은 애기부들이 2,210 DM/m2․yr로서 갈대(1,725 DM/m2․yr) 보다 높았다. 시화호 인공습지 전체에서 수생식물에 의하여 연간 생산되는 유기물량은 총 845ton DM/yr(423 ton C/yr)이며, 이중 갈대에 의한 것이 761 ton DM/yr이고 애기부들에 의한 것이 84ton DM/yr로 나타났다.
갈대 잎과 줄기의 낙엽분해속도 상수(k)는 각각 0.0062/day 및 0.0018/day이며, 분해 반감기는 각각 112 days 및 392 days이었다. 애기부들 잎과 줄기 낙엽의 분해속도 상수(k)는 각각 0.0031/day 및 0.0018/day이었으며, 분해 반감기는 각각 221 days 및 393 days이었다. 잎 낙엽 분해속도는 갈대가 애기부들보다 약 2배 빨랐으나, 줄기 낙엽의 분해속도는 두 식물이 유사하였다.
식물에 의하여 물로 배출되는 단위면적당 유기물 부하량은 애기부들이 1,500 g DM m-2 yr-1로서 갈대의 평균치 1,185 g DM m-2 yr-1보다 높았다. 시화호 인공습지 전체에서 수생식물에 의해 물로 배출되는 수생식물에 의한 유기물 부하량은 총 573ton DM/yr (257ton C/yr)이며, 이중 갈대에 의한 것이 515ton DM/yr이고 애기부들에 의한 것이 58ton DM/yr이었다.
갈대 경엽부의 질소와 인 함량은 각각 7mg N/g DM 및 0.6mg P/g DM이었고, 애기부들 경엽부의 질소와 인 농도는 각각 8mg N/g DM 및 1.6mg P/g DM이었다.
저인공습지 전체에서 저토로 부터 식물에 의한 영양소 흡수량은 질소가 5,993Kg N/yr, 인이 577Kg P/yr이었으며, 이중에서 갈대가 5,311Kg N/yr과 445Kg P/yr이었으며, 애기부들이 682Kg N/yr과 132Kg P/yr이었다.
인공습지 전체에서 식물에 의하여 물로 부하되는 영양소 부하량은 질소가 1,952 Kg N/yr, 인이 148 Kg P/yr이었으며, 이중에서 갈대가 1,554 Kg N/yr과 103 Kg P/yr이었으며 애기부들이 398 Kg N/yr과 46 ton P/yr이었다. |
습지식물 번역(영어 번역본)Production and decomposition of organic matters by plants in the wetland
The density of reed shoots was stable ranging between 100～120/m2 after April in the high and low wetland of Donghwacheon and in the high wetland of Banwolcheon, but it rose to 170/m2 until July in the low wetland of Banwolcheon. The maximum height of the reed shoot was about 340cm in the low wetland of Donghwacheon, and in the high wetland of Banwolcheon. It was higher than in the high wetland of Donghwacheon and in the low wetland of Banwolcheon where the maximum height was about 270cm. The density of the Typha angustata shoot was 30/m2 in October, lower than that of the reed shoot.
The net primary productivity of hydrophytes was 2,210 DM/m2․yr for Typha angustata, greater than that of the reed (1,725 DM/m2․yr). In the entire artificial wetland of Sihwaho, the quantity of organic matters produced annually by hydrophytes was 845ton DM/yr (423 ton C/yr), and 761 ton DM/yr out of it was produced by reeds and 84ton DM/yr by Typha angustata.
The decomposition rate constant(k) of the leaf and stems of the reed was 0.0062/day and 0.0018/day respectively, and the half life of decomposition was 112 days and 392 days respectively. The decomposition rate constant (k) of the leaf and stem of Typha angustata was 0.0031/day and 0.0018/day respectively, and the half life of decomposition was 221 days and 393 days respectively. The decomposition rate of the leaf of the reed was about twice faster than that of Typha angustata, but the decomposition rate of the stem was similar in both plants.
The organic load per unit area discharged by plants into water was 1,500g DM m-2 yr-1 for Typha angustata, greater than that of the average of the reed, 1,185g DM m-2 yr-1. In the entire artificial wetland of Sihwaho, the total organic load discharged by hydrophytes into the water was 573ton DM/yr (257ton C/yr). 515ton DM/yr out of it was due to the reed, and 58ton DM/yr was due to Typha angustata.
The nitrogen and phosphorous content in the reed shoot was 7mg N/g DM and 0.6mg P/g DM respectively, and the nitrogen and phosphorous content in the Typha angustata shoot was 8mg N/g DM and 1.6mg P/g DM respectively.
In the entire low artificial wetland, as far as the absorption of nutrients by plants from the sediment was concerned, nitrogen was 5,993Kg N/yr, and phosphorous was 577Kg P/yr. The reed absorbed 5,311Kg N/yr and 445Kg P/yr, whereas Typha angustata absorbed 682Kg N/yr and 132Kg P/yr.
In the entire artificial wetland, as for the nutrient load discharged by plants into the water, nitrogen was 1,952Kg N/yr, and phosphorous was 148Kg P/yr. The read discharged 1,554Kg N/yr and 103Kg P/yr, and Typha angustata discharged 398Kg N/yr and 46 ton P/yr. |
