인공강우장치를 이용한 산불발생지의 토양침식 특성에 관한 연구

이헌호 ( Heon Ho Lee ),주재덕 ( Jae Duk Joo ) 한국산림과학회 2006 한국산림과학회지 Vol.95 No.6

인공산성비 살포에 의한 산림토양의 토심별 산도 및 전기전도도의 변화

이헌호(Heon Ho Lee),김재기(Jae Gi Kim) 한국산림과학회 2000 한국산림과학회지 Vol.89 No.1

This study was carried out to analyze the characteristics of pH and electrical conductivity(EC) at each stand and soil depth by the artificial acid rain sprinkling in the upper watershed of Mt. Palgong and furthermore to clarify the relationships between forest soil and water purification function. The results obtained in the experimental sites of Quercus acutissima and Larix leptolepis were summarized as follows ; 1. The average soil pH at each soil layer(0∼5㎝, 0∼10㎝, 0∼20㎝ in depth) were 4.8, 4.3 and 4.5 for the Quercus acutissima soil and 5.15, 5.19 and 5.21 for the Larix leptolepis soil. The soil pH of Larix leptolepis stand was higher than that of Quercus acutissima stand. In addition, the deeper soil depth was, the higher soil pH was. 2. The soil solution pH of Larix leptolepis stand was higher than that of Quercus acutissima stand. It was due to the high soil pH of Larix leptolepis stand itself and the difference of humus layer thickness. 3. It took time to show the pH buffer capacity of forest soil after application of artificial acid rain in the forest soil. The pH value of soil solution in each experimental site was maximum at this time and then did not increase pH value any more. 4. Soil solution EC increased slowly with pH 3.0 treatment, but it decreased slowly with pH 5.0 treatment over time. It was assumed that the amount of the leached cation and the ions leading buffer action changed at the stands with ranges of acidity treatment. 5. From the trend of soil solution EC at each soil depth, it seemed that the water buffer capacity of the forest soil increased as the soil depth increased.

산지 물순환 소과정에 있어서 수질변화의 추적분석에 의한 산림의 환경적 정화기능의 계량화 연구

이헌호 ( Heon Ho Lee ) 한국산림과학회 1997 한국산림과학회지 Vol.86 No.1

This study was carried out to evaluate the capacity of environment purification of forest and to reveal formation processes of stream water quality by evaluating water quality variations in forest hydrological processes. Water quantity, pH, electric conductivity(EC), dissolved oxygen(DO), and dissolved matter concentrations were monitored in open rainfall, throughfall, stemflow, litter flow and short-term stream flow for one unit storm, and also for those were monitored in long-term stream flow in Palgong, Yongsung, and Daedong catchments. The results were summarized as follows; 1. pH and DO values of stream flow were increased as the flux increased but EC values were decreased. 2. pH values of stemflow and throughfall were decreased with the lapse of rainfall time with lower values than open rainfall. Arid EC values were higher in initial rainfall period but lower gradually with the lapse of time than open rainfall. In litter flow, pH values were lower than open rainfall but EC values were higher. In stream flow, pH values of stream flow showed a high level in initial rainfall period and decreased remarkably with the lapse of time, but it recovered after the rainfall stopped. And however, the values of EC showed almost reverse tendency, DO values of litter flow and stream flow were decreased gradually with the lapse of time in litter flow and stream flow but there were no any tendency in open rainfall, stemflow and throughfall. 3. pH values of stemflow and throughfall in Quercus acutissima were higher than in Pinus densiflora, but EC values were lower. Total amount of canons in stemflow was higher in Pinus densiflora than in Quercus acutissima. 4. pH, DO, EC and total amount of canon values in hydrological processes were in the order of;litter flow$lt;net rainfall(stemflow+throughfall)$lt;total rainfall$lt;stream flow, litter flow$lt;net rainfall$lt;total rainfall $lt; stream flow, total rainfall $lt; stream flow $lt; net rainfall $lt; litter flow, and total rainfall $lt; net rainfall$lt;litter flow$lt;stream flow, respectively. 5. Water quality of stream flow was better in Palgong catchment than in Yongsung because of low EC values. And each of pH, DO, EC and total amount of canon values in long-term stream flow showed characteristic changes by month.

산지 물순환과정에 있어서 산도 , 전기전달법 및 용재산소량의 변화

이헌호(Heon Ho Lee),전재홍(Jae Hong Jun) 한국산림과학회 1996 한국산림과학회지 Vol.85 No.4

This study was carried out to reveal the forest land effect on water purification in mountainous watersheds. Rainfall, throughfall, stemflow, soil and stream water were monitored by pH, electrical conductivity(EC), and dissolved oxygen(DO) in Daehan-Ri and Parkdal-Ri catchments. The results were summarized as follows; 1. Rainfall pH values of Parkdal-Ri and Daehan-Ri were 7.6 and 6.4, respectively. 2. Comparing stemflow and throughfall of Pinus densiflora with Pinus rigida, the pH values of Pinus densiflora were 4.32 and 4.22 and the pH of Pinus rigidd were 3.34 and 4.81, respectively. The EC values of Pinus densiflora were 119.7 μS/㎝ and 96.8 μS/㎝ and EC of Pinus rigida were 230.0 μS/㎝ and 82.0 μS/㎝. 3. All pH values were decreased as the streamflow increased except long-term runoff in Daehan-Ri. The EC values also were increased as the streamflow increased, but EC of short-term runoff in Daehan-Ri was gradually decreased as the streamflow increased due to entrance of throughfall which has high EC values at the beginning of rainfall events. The DO concentrations of all experimental plots were elevated as the streamflow increased, because reaeration occurs at the surface of the stream as the increased discharge make turbulence. 4. pH of Stemflow and throughfall in Pinus densiflora were lower than in Quercus acutissima, but EC values were higher in Pinus densiflora. 5. Water purification was mostly influenced by forest soil in forest hydrological processes. 6. Stemflow and throughfall were more influenced by dry deposition and organic acid in crown and bark than those of wet deposition. During the stemflow and throughfall passed forest soil, these acidic stemflow and throughfall were neutralized, and stream water quality was neutral or slightly alkaline.

산불이 임지의 (林地) 수정류 특성에 미치는 영향

이헌호 ( Heon Ho Lee ) 한국산림과학회 1996 한국산림과학회지 Vol.85 No.1

This study was carried out to examine the forest fire effect on water storage characteristics in the forests. Water storage capacity of the burned area was analyzed by several major factors, such as soil pore, maximum water content, effective water storage, and percolation rate. The results obtained from the analysis of major factors are as follows; The deeper soil depth, the less total pore, coarse pore, effective water storage, and percolation rate. However, fine pore increased slightly in both burned area and control plot. As compared with control plot, burned area showed lower percolation rate, coarse pore, and effective water storage, but higher values of fine pore. Directly after forest fire, the soil pore is little affected. But as the time passes, top soil structure changes and soil pore also is affected even in a deep soil. Estimated effective water storage was lower at top soil of Namcheon and at deep soil of Namha in all the burned areas, but slowly decreased in deep soil compared to control plots. Therefore it was concluded that forest water storage capacity was greatly affected by the forest fire.

지피상태에 (地被狀態) 따른 임지의 (林地) 수저유 (水貯留) 특성 (Ⅱ)

이헌호(Heon Ho Lee),이창우(Chang Woo Lee) 한국산림과학회 1994 한국산림과학회지 Vol.83 No.4

This study was carried out to get the basic data for obtaining water resources continuously. Water storage of forest land was estimated by effective water storage based on classifying soil pore. The results were summarized as follows : 1. Percentage of coarse pores were in the order : Forest$gt;Bare land$gt;Grasses. As soil depth increased, total pores, coarse pores, and maximum water content were decreased, while fine pores increased. 2. Soil pore percentage and physical properties of surface layer (0∼20㎝) were significantly different among forest floor conditions. However, there were no difference in soil pore percentage and physical properties in 20∼40㎝ and 40∼60㎝ according to forest floor conditions. In the same plot, on the other hand, soil pore percentage and physical properties were significantly different between surface layer(0∼20㎝) and 20∼40㎝, but there were no differences between 20∼40㎝ and 40∼60㎝. 3. Effective water storage was highly correlated with coarse pore in all plots. 4. The model for water storage capacity of each forest floor condition expressed by effective water storage was produced using coarse pores and soil depth.

지피상태에 (地被狀態) 따른 임지의 (林地) 수저유 (水貯留) 특성

이헌호(Heon Ho Lee),이창우(Chang Woo Lee) 한국산림과학회 1994 한국산림과학회지 Vol.83 No.3

This study was carried out to investigate the water storage charateristics of surface soil by different forest floor conditions and to measure water storage capacity of forest Land at the Yeungnam University forest in Yongjang-ri, Nenam-myoen, Kyongju-gun, Kyongsangbuk-do. The study was conducted for 4 months, from June to September, 1993. The results were summarized as follows ; 1. Infiltration capacity of surface soil for each. forest floor condition was in the order : Oak forest$gt;Oak forest removed Ao layer$gt;Pine forest removed Ao layer$gt;Pine forest$gt;Bare land$gt;Grasses. 2. The absolute values of infiltration capacity were increased as the rain intensity increased, while the order of infiltration capacity for each floor condition was not changed. 3. Infiltration capacity was highly correlated with surface soil hardness and todal pores. 4. Infiltration formula based on the Horton`s could be estimated at each forest floor condition. 5. The model for water storage capacity of forest land expressed by infiltration capacity was estimated using total pores and soil hardness. This study indicates water storage capacity of different forest floor conditions depends on infiltration capacity. Using these formula, it was possible to calculate and estimate water storage capacity of forest land. Therefore, the result of this study will be helpful to increase water storage capacity of forest land and to manage water resources effectively.

삼림이수기능의 (森林理水機能) 정량적 평가방법에 관한 연구 (Ⅱ) - 조도계수의 (粗度係數) 응용을 중심으로 -

이헌호 ( Heon Ho Lee ) 한국산림과학회 1992 한국산림과학회지 Vol.81 No.4

In this research, a kinematic wave model was applied for the runoff analysis, Regulation of streamflow was estimated by the calibration of roughness coefficient as a parameter. The data analyzed were obtained from Ananomiya and Shirasaka experimental basins at Tokyo University Forest in Aichi. Estimation methods and characteristics of roughness coefficient as a evaluation method of hydrological function of forest are summarized as follows : 1. Roughness coefficient(N_s) indicates the resistance of hillslope to the flowing water of surface runoff. There exists an hypothesis that resistance of hillslope to flowing water increase with the growth forest and development of the A_o layer. 2. Roughness coefficient N_s was estimated by the parameter when the stream direct runoff was calculated by using the kinematic wave. 3. Secular change of `N_s` in ananomiya has a curve which has an upper limit and increases exponentially near the limit. The curve quickly increased from 1935 to 1945 when results of afforestation for erosion control were thought to be effective. On the other hand, slight increase of `N_s` in Shirasaka indicates that there was not such a big change in the surface of soil layer. 4. The increase of `N_s` was related with decrease of direct runoff and increase of base flow. It was recognized that the rate of direct runoff decreased with the improvement of forest physiognomy and the rate of base flow was increased. But absolute value of water runoff per one storm decreased in chronological order.

PDA기반의 산림자원조사용 소프트웨어 개발에 관한 연구

이헌호 ( Heon Ho Lee ),이도형 ( Do Hyung Lee ),석수일 ( Soo Il Suk ) 한국산림과학회 2006 한국산림과학회지 Vol.95 No.6

인공산성비 살포에 의한 산림토양 토심별 주요 이온의 동태 분석

이헌호(Heon Ho Lee),김재기(Jae Gi Kim),김재훈(Jae Hoon Kim) 영남대학교 자원문제연구소 2001 資源問題硏究 Vol.20 No.-

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