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NTIS 바로가기Weed & Turfgrass Science, v.4 no.1, 2015년, pp.1 - 9
변종영 (한국과학기술정보연구원 ReSEAT 프로그램) , 김상우 (한국과학기술정보연구원 ReSEAT 프로그램) , 이증주 (경상대학교 식물의학과) , 박기웅 (충남대학교 식물자원학과)
Many irrigated and drainage canals, reservoirs, lakes, and rivers are choked by the explosive growth of aquatic weeds, resulting in enormous direct loss in Korea. Distribution of aquatic weeds and exotic invasive plant species in irrigation and drainage waterways, and riparian wetlands was reviewed ...
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핵심어 | 질문 | 논문에서 추출한 답변 |
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침수잡초가 침수에 어떻게 영향을 미치는가? | 침수잡초는 습지에 번성하면 용수로와 배수로에서 물의 유속을 감소시킴으로써 물이 증발되고 땅속으로 누수가 많으며, 주변지역에서 수위를 높게 하여 침수를 유도할 수도 있다. 외국에서 수생잡초의 피해를 살펴보면 미국 서부에서는 관개수로와 배수로의 약 30%가 수생잡초의 발생으로 인하여 문제가 심각하며, 농지의 50%가 수생잡초를 방제하지 않으면 관개할 수 없다(Mitchell, 1974). | |
수로 주변에 발생된 잡초는 농경지에 어떤 영향을 미치는가? | 수생잡초는 물에서 자라서 생활사를 마치는 식물로서 수생 생태계에 직접적으로 영향을 미친다. 수로 주변에 발생된 잡초는 물의 유속을 감소시켜 관개수로의 이용효율을 저하시키고, 관개수로 잡초종자를 농경지로 유입시켜 잡초 번식을 조장하고 있으므로 수로주변에 발생하는 잡초를 적절히 방제되지 않으면 다음 해에 관개할 때 잡초발생원이 된다. | |
수생잡초는 수생 생태계에 직접적으로 영향을 미치는데, 이중 양어 생산에 미치는 영향은? | 수생잡초는 물에서 자라서 생활사를 마치는 식물로서 수생 생태계에 직접적으로 영향을 미친다. 과도한 수생잡초의 식생은 수초가 물로부터 많은 양의 영양분을 흡수하여 물의 플랑크톤의 밀도를 낮게 하여 양어 생산을 감소시킨다(Lancer and Krake, 2002). 물의 유속이 감소되면 인접지역에 부분적 침수를 유발하며, 특히 인도에서는 운하에서 수생잡초 때문에 약 30-40% 유속이 감소되었다고 보고하였다(Mehta et al. |
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