Abstract
The two-month-old rooted-cuttings of Populus alba ${\times}$ glandulosa, P. euramericana and P. nigra ${\times}$ maximowiczii clones were exposed to livestock waste water - one of major water pollutants, and ground water in order to determine the effects of livestock waste water on growth response and absorption capacity of the species. For this purpose, 5 clones of each species were used. In all the species, the height growth of rooted-cuttings was better in livestock waste water treatment than in ground water. Of all the poplar species compared, the height growth was best in P. alba ${\times}$ glandulosa. In the cases of P. euramericana and P. nigra ${\times}$ maximowiczii, the height growth in the livestock waste water treatment was statistically different among clones, whereas there was no significant difference among P. alba ${\times}$ glandulosa clones. Aboveground biomass such as leaf and shoot dry weight of all the species increased in the livestock waste water treatment, while root dry weight decreased. In addition, chlorophyll contents in leaf of all the poplar species increased in the livestock waste water treatment. All the poplar trees showed temporal variation in the absorption amount of livestock waste water during the experimental period. In all the poplar species, the absorption amount of livestock waste water was less than that of ground water. Of 3 poplar species, P. alba ${\times}$ glandulosa was best in the absorption capacity of livestock waste water. Of all 15 poplar clones compared in this study, the 72-16 clone of P. alba ${\times}$ glandulosa showed the best absorption capacity.
수질오염원인 축산폐수에 대한 포플러류의 수종 및 품종별 생육반응 및 흡수능력을 조사하기 위하여 삽목 당년생 현사시 (P. alba ${\times}$ glandulosa), 이태리포플러(P. euramericana), 양황철(P. maximo-wiczii) 각각 5클론에 대하여 축산폐수와 지하수를 처리하였다. 묘고생장량은 현사시가 가장 우수하였고 각 수종 공통적으로 축산폐수 처리구의 생장량이 지하수 처리구의 생장량 보다 다소 우수한 경향을 보였다. 현사시의 품종들은 축산폐수에 대하여 클론간 차이가 없이 우수한 묘고생장을 보였으나 이태리 포플러와 양황철은 클론간에 많은 차이를 나타냈다. 축산폐수 처리는 모든 수종에 대하여 엽 및 shoot 건중량 증가와 같은 지상부 biomass를 증가시킨 반면 뿌리의 건중량은 감소시켰다. 또한 축산폐수는 포플러류의 엽록소 함량을 증가시켰다. 처리 기간동안 수종별 축산폐수 흡수량은 시기별로 차이를 보였고 모든 수종 공히 축산폐수 흡수량이 지하수 흡수량보다 다소 낮았다. 총 흡수량은 현사시가 가장 많았으며 전체 15개 클론중 현사시 72-16호 클론이 가장 우수한 것으로 조사되었다.
(Division of Tree Breeding, Korea Forest Research Institute)
;