포플러림의 증발산에 의한 양돈폐수 제거와 포플러 클론별 생장특성 (Removal of Swine Wastewater by Evapotranspiration at Poplar Plantation and Growth Characteristics of Poplar Clones)

서지정보

· 발행기관 : 한국폐기물자원순환학회
· 수록지 정보 : 한국폐기물자원순환학회지 / 27권 / 3호 / 226 ~ 233페이지
· 저자명 : 여진기, 구영본, 김현철, 신한나, 이으뜸

초록

This study was conducted to evaluate the amount of swine wastewater (SWW) eliminated by evapotranspiration and growth responses of poplar clones on SWW at a poplar plantation. Sixty-six trees of each of five-year-old Populus alba x P. glandulosa “72-31” and P. euramericana “Eco28” were planted at an area of 200 m2. Average height and dbh of clone 72-31 were 7.8 m and 6.5 cm, and those of clone Eco28 were 6.7 m and 6.0 cm, respectively before application of SWW. SWW in five plastic containers (0.7 m in height, 1.0 m in width, 25.0 m in length) installed at 0.6 m depth in the ground was used for irrigation. Loss by percolation of the input wastewater was intercepted perfectly by vinyl sheet put in 2 m in depth into the ground at the plantation. The poplar plantation evapotranspirated total 176.9 m3 of swine wastewater and rain water from May to October. The amount of daily evapotranspiration was the highest in May and October with low level of relative humidity. The net amount of evapotranspiration of swine wastewater at the plantation was likely to be 60.0 m3. The dbh growth of the clone 72-31 and Eco28 was reduced to 32.6% and 32.1%, and the height growth of the clones were also reduced to 16.0% and 26.3% than those of control, respectively when applied with the wastewater. Leaf area of the clone Eco28 grown under SWW decreased sharply, while the number of leaf of both clones increased compare to those of control. The nitrogen contents of leaf of 72-31 and Eco28 were 22.0% and 19.3% higher than that of control, respectively. From this experiment, the poplar plantation seems to eliminate much amount of SWW, one of major water pollutants, by evapotranspiration although the growth traits of the trees were damaged by the absorption of high nutrients from SWW.

영어초록

This study was conducted to evaluate the amount of swine wastewater (SWW) eliminated by evapotranspiration and growth responses of poplar clones on SWW at a poplar plantation. Sixty-six trees of each of five-year-old Populus alba x P. glandulosa “72-31” and P. euramericana “Eco28” were planted at an area of 200 m2. Average height and dbh of clone 72-31 were 7.8 m and 6.5 cm, and those of clone Eco28 were 6.7 m and 6.0 cm, respectively before application of SWW. SWW in five plastic containers (0.7 m in height, 1.0 m in width, 25.0 m in length) installed at 0.6 m depth in the ground was used for irrigation. Loss by percolation of the input wastewater was intercepted perfectly by vinyl sheet put in 2 m in depth into the ground at the plantation. The poplar plantation evapotranspirated total 176.9 m3 of swine wastewater and rain water from May to October. The amount of daily evapotranspiration was the highest in May and October with low level of relative humidity. The net amount of evapotranspiration of swine wastewater at the plantation was likely to be 60.0 m3. The dbh growth of the clone 72-31 and Eco28 was reduced to 32.6% and 32.1%, and the height growth of the clones were also reduced to 16.0% and 26.3% than those of control, respectively when applied with the wastewater. Leaf area of the clone Eco28 grown under SWW decreased sharply, while the number of leaf of both clones increased compare to those of control. The nitrogen contents of leaf of 72-31 and Eco28 were 22.0% and 19.3% higher than that of control, respectively. From this experiment, the poplar plantation seems to eliminate much amount of SWW, one of major water pollutants, by evapotranspiration although the growth traits of the trees were damaged by the absorption of high nutrients from SWW.

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