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하천연변에 식재된 3년생 포플러 클론의 지상부 biomass의 질소 저장능력 추정추정

Nitrogen Storage Potential in Aboveground Biomass of Three-year-old Poplar Clones in a Riparian Area

이원우|변재경|우관수|여진기|구영본
농업생명과학연구원 (Institute of Agriculture & Life Science, Gyeongsang National University)|2010|농업생명과학연구 (Journal of Agriculture & Life Science)|제44권 제3호|pp. 15-21

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참고문헌

키워드

PoplarClone수변완충림포플러클론지상부 바이오매스Aboveground biomass질소 저장Riparian woody bufferNitrogen storage

초록

수변완충림으로 조성된 3년생 포플러 4클론에 대하여 biomass 생산능력과 주요 비점오염원 중 하나인 질소의 저장능력을 조사하였다. 현사시 72-31 및 미루나무 교잡종 Dorskamp 클론의 지상부 biomass 구성 비율은 줄기, 가지, 잎의 순으로 높았으며, 잎과 가지의 비율은 두 클론간에 차이를 보였다. 지상부 biomass의 질소 함량은 잎, 가지, 줄기의 순으로 높았고 72-31 클론의 잎과 가지의 질소함량은 Dorskamp에 비해 높았으나 줄기의 질소 함량은 낮게 나타났다. 3년생 Ay48 클론의 지상부 biomass 추정량은 37.5 ton․ha-1로 가장 높았으며, 72-31 클론이 가장 낮았다. 3년생 포플러 클론의 지상부 biomass의 질소 저장능력은 biomass 생산량의 순위와 일치하였다. 지상부 biomass 생산능력이 가장 우수한 3년생 Ay48 클론은 218.3 kg․ha-1의 질소를 지상부 biomass에 저장할 수 있는 것으로 추정되었다.

Abstract

We estimated the biomass productivity and the storage potential of nitrogen, the major contributor of non-point source pollution, with four three-year-old four poplar clones in a riparian woody buffer established in the Anseong River in Anseong, Korea. Stem of Populus alba × P. glandulosa clone 72-31 and Populus deltoides × P. nigra clone Dorskamp showed the highest percentage of aboveground biomass components, followed by branch and leaf. Nitrogen content in aboveground biomass components of two poplar clones was the highest in leaf and the lowest in stem. Nitrogen content in leaf and branch of clone 72-31 was higher than that of clone Dorskamp, while it in stem was lower. Populus deltoides clone Ay48 showed the highest above-ground biomass productivity, which was estimated as 37.5 ton ha-1 at age 3. However, clone 72-31 was the lowest in above-ground biomass productivity. Nitrogen storage potential in aboveground biomass of 3-year-old poplar clones was high in order of aboveground biomass. Clone Ay48 showed the highest nitrogen storage potential in aboveground biomass, which was estimated as 218.3 kg ha-1 at age 3.

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