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이궁 ( Koong Yi ),임주훈 ( Joo Hoon Lim ),김정환 ( Jeong Hwan Kim ),이임균 ( Im Kyub Lee ),정용호 ( Yong Ho Jeong ) 한국환경복원기술학회 2013 한국환경복원기술학회지 Vol.16 No.1
This study was conducted to evaluate the effect of soil covering depth and vegetation base materials on the competition between Pinus densiflora Siebold & Zucc. and Lespedeza cyrtobotrya Miq., which were grown in an abandoned coal mine land for three years after seeding, by comparing their growth and stein density. The study site was consisted of sub-plots with four different soil covering depths (0cm, 10cm, 20cm, and 30cm) and four different compounds of vegetation base materials (peat moss (control), soil conditioner+peat moss (S+P), erosion control material+peat moss (E+P), and soil conditioner+erosion control material+peat moss (S+E+P)). Results of this study showed opposite pattern between P. densiflora and L. cyrtobotrya with different soil covering depth and compounds of vegetation base materials in general. P. densiflora showed the highest growth and stem density in plots with 10cm and 0cm depths of soil covering, respectively, while the lowest was shown in plots with 20cm depth of soil covering. In contrast, L cyriobotrya showed the highest growth and stem density in plots with 20cm depth of soil covering, while the loweSt was shown in plots with 0cm depth of soil covering. In case of vegetation base materials, P. densflora showed the highest growth and stem density in control plots and plots treated with S+P, respectively, while the lowest was shown in plots with S+E+P treatment. On the other hand, L cyrtobotrva showed the highest growth and stem density in plots treated with S+E+P, while the lowest was shown in control plots. These results suggested the competition between two plants as a major cause of opposite patterns, which is induced by the suppressed growth and stem density of P. densiflora by fast growing L cyrtobotrya. Despite the suppression of L cyrtobotrya on P. densiflora, L. cyrtobotrya can play a positive role in improving soil quality, and thus it would be more desirable for restoring abandoned coal mine land to manage the growth of L cyrtobotrya periodically, rather than eliminate them.
해외 산림토양탄소모델 분석을 통한 한국형 모델 개발방안 연구
이아름 ( An Reum Lee ),이궁 ( Koong Yi ),손요환 ( Yow Han Son ),김래현 ( Rae Hyun Kim ),김춘식 ( Choon Sig Kim ),박관수 ( Gwan Soo Park ),이경학 ( Kyeong Hak Lee ),이명종 ( Myong Jong Yi ) 한국산림과학회 2010 한국산림과학회지 Vol.99 No.6
Forest soil carbon model is a useful tool for understanding complex soil carbon cycle in forests and estimating dynamics of soil carbon to climate change. However, studies on development and application of the model are insufficient in Korea. The need for development of Korean model is now growing, because there are notable problems and limitations for adapting overseas models in Korea to meet the requirements of the international organizations such as IPCC, which demands highly reliable data for national reports. Therefore, we have studied 7 overseas forest soil carbon models (CBM-CFS3, CENTURY, Forest-DNDC, ROMUL, RothC, Sim-CYCLE, YASSO), analyzed and compared their structure, decomposition mechanism, initializing process and, input and output data. Then we evaluated applicability of these models in Korea with three criteria; availability of input data, performance of model, and possibility of regional modification. Finally, a systematic process for applying a new model was suggested based on these analyses.
硏究論文 : 폐석더미에서 복토 및 식생기반재 처리가 참싸리( Lespedeza cyrtobotrya Miq.)의 생장에 미치는 영향
김정환 ( Jeong Hwan Kim ),임주훈 ( Joo Hoon Lim ),이궁 ( Koong Yi ),이임균 ( Im Kyun Lee ),정용호 ( Yong Ho Jeong ) 한국환경복원기술학회(구 한국환경복원녹화기술학회) 2012 한국환경복원기술학회지 Vol.15 No.6
This study was conducted to evaluate the effects of soil covering and vegetation base materials implementation on the growth of Lespedeza cyrtobotrya Miq. in abandoned coal mine land. We compared the biomass of L. cyrtobotrya at the study plots of four different soil covering depth (control, 10cm, 20cm, and 30cm) and four different compounds of vegetation base materials composed of soil conditioner (S), erosion control (E), and peat moss (P) (control, S+P, E+P, and S+E+P). The result showed that the biomass of L. cyrtobotrya was higher in the study plots implemented with soil covering than control plot, although the increase in biomass was not constant with soil covering depth. In case of the vegetation base materials treatments, the biomass was highest in S+E+P plot, and S+P and E+P plots showed higher biomass than control plot.
실적 온난화 처리가 굴참나무 묘목의 엽록소 함량 및 순광합성률에 미치는 영향
조우용 ( Woo Yong Jo ),손요환 ( Yo Whan Son ),정혜근 ( Hae Geun Chung ),노남진 ( Nam Jin Noh ),윤태경 ( Tae Kyung Yoon ),한새롬 ( Sae Rom Han ),이선정 ( Sun Jeoung Lee ),이수경 ( Sue Kyoung Lee ),이궁 ( Koong Yi ),( Li Xia Jin 한국산림과학회 2011 한국산림과학회지 Vol.100 No.4
We investigated the effect of artificial warming on chlorophyll contents and net photosynthetic rates of 2-year-old Quercus variabilis seedlings in a nursery open-field experiment site. 64 seedlings were each planted in 1 m×1 m plots (n = 4) and warmed with infrared lamps. The air temperature in warmed plots was 3°C higher than that of control plots. Chlorophyll contents and net photosynthetic rates were measured in May, July, August, September and October, 2011. In May, September and October chlorophyll contents and net photosynthetic rates were significantly higher in warmed plots than in control plots. However, there were no significant differences in chlorophyll contents and net photosynthetic rates between warmed plots and control plots in July and August. It seemed that early developed leaves of warmed plots in May with higher chlorophyll contents could lead to higher net photosynthetic rates whereas there was no difference in net photosynthetic rates due to saturation of chlorophyll contents in July and August. Increased biosynthesis of chlorophyll due to warming might increase net photosynthetic rates in September and October.