http://chineseinput.net/에서 pinyin(병음)방식으로 중국어를 변환할 수 있습니다.
변환된 중국어를 복사하여 사용하시면 됩니다.
Spiegel Relaskop 를 이용한 임분조사 (林分調査) 방법
신만용(Man Yong Shin),고영주(Yung Zu Ko) 한국산림과학회 1993 한국산림과학회지 Vol.82 No.2
The study was conducted to discuss the theory and practical application of point sampling method using Spiegel Relaskop that can reduce time and expenses with efficiency in field work for stand inventory. An example of the anals-sis for real data was given to help practical foresters easily compute basal area, number of trees and volume per hectare even though the theory of point sampling technique is relatively difficult. Also, a SAS program for personal computer and the handling methods of pocket calculator were provided to easily use the point sampling technique in data analysis.
임하댐 주변지역의 기상환경 변화가 수목생장에 (樹木生長) 미치는 영향에 관한 정량적 분석
신만용(Man Yong Shin),천정화(Jung Wha Chun) 한국산림과학회 1996 한국산림과학회지 Vol.85 No.3
This study was conducted to investigate the effects of meteorological changes on tree growth due to the reservoir construction. First, climatic normals were estimated before and after the reservoir construction at the area of Imha, through the topoclimatological relationships. Secondly, the amount of meteorological changes was duantified based on the difference analysis of the climatic normals. Thirdly, the diameter increments of Pinus densiflora around Imha area were measured with increment borer. Sample trees were taken on the 6 points of 30m, 100m, 500m, 1㎞, 3㎞, and 5㎞ from the reservoir, respectively. Finally, effects of meteorological changes on tree growth were investigated based on the analysis of tree ring increment patterns. Results showed that the growth of trees within the range of 1㎞ from the reservoir had been increased, but the growth of ones out of 1㎞ range had no relationship with meteorological changes after the reservoir construction. It seems that the diameter increment of trees grown near reservoir has been increased mainly due to the increased solar radiation in spring and the increased total amount of precipitation during growing season, compared with those before the reservoir construction. It is supposed, however, that the changes of monthly mean temperature has little effect on the tree growth because of its small amount of changes.
신만용(Man Yong Shin),윤종화(Jong Wha Yun),차두송(Du Song Cha) 한국산림과학회 1996 한국산림과학회지 Vol.85 No.1
Current volume tables might underestimate or overestimate the volumes of individual trees in a specific region because the tables were made using the data from broad region. This study provides a statistical method of local correction, which is the ratio-of-means estimator, when the table is applied to the data from a specific region. Data used in this study were 411 trees of Larix leptolepis from Hongchon region. Five statistical models for individual tree volume equation were evaluated based on 3 evalation criteria and the best equation fitted to the data from Hongchon region was selected. The volume estimated by the selected equation was then compared with the volume estimated by the current volume table. From the ratio-of-means estimate based on the volumes estimated by selected equation and by current volume table, the local correction was made. The correction equation was V_(Hongchon)=1.078 V_(volume table). It is also proved that the correction equation can simply and precisely estimate tree volumes of Larix leptolepis in Hongchon region using the current volume table.
천연 혼효림분의 (混淆林分) 구조조정을 위한 무육방법 (撫育方法)
신만용(Man Yong Shin),배상원(Sang Won Bae),임주훈(Joo Hoon Lim),전영우(Young Woo Chun) 한국산림과학회 1994 한국산림과학회지 Vol.83 No.2
This study was conduced to provide a method of tending practices for natural mixed stands, which have a possibility of inducing to selection cutting stand based on the analysis of stand structures. For this, first, diameter distribution for a balanced selection cutting stand was predicted using Q theory applied to natural stands. The method of estimating diminution ratio coefficient Q is presented. The possible tending practice method which could be adopted to natural stands is discussed based on two different diameter distributions and side conditions.
신갈나무 - 전나무 천연 혼효임분의 (混淆林分) 경신 (更新) 및 무육방법 (撫育方法) Ⅱ. 생장률을 이용한 미래 임분구조의 (林分構造) 예측
신만용(Man Yong Shin),임주훈(Joo Hoon Lim),전영우(Young Woo Chun),고영주(Yung Zu Ko) 한국산림과학회 1992 한국산림과학회지 Vol.81 No.2
The natural mixed stand in Jindong-Ri, according to a recent study, showed the possibility of selection cutting as a silvicultural system based on the stand structure such as DBH distribution and height distribution. However, volume structure per DBH class of this stand had not a mature stand of selection cutting. In this study, wherefore, the rate of increment for DBH and volume was used to predict the future stand structure including volume distribution per DBH class. The possibility of selection cutting was then discussed using the future stand structure. From the prediction of future stand structure for 30 years per every 10 years, it could be concluded that the stand will be induced to selection cutting forest because of enough number of trees in objective DBH class and above, total volume per hectare, and the volume of large DBH class which can be harvested every year. However, this stand still did not show the structure of typical selection cutting which has the rate of 1 : 2 : 7 in the number of trees per hectare and the volume rate of 5 : 3 : 2 for large, medium, and small DBH class. This problem could be improved by appropriate silvicultural treatments.
신갈나무 - 전나무 천연 혼효임분의 (混淆林分) 경신 (更新) 및 무육방법 (撫育方法) Ⅰ. 임분구조와 (林分構造) 작업종 (作業種)
신만용(Man Yong Shin),박주훈(Joo Hoon Lim),전영우(Young Woo Chun),고영주(Yung Zu Ko) 한국산림과학회 1992 한국산림과학회지 Vol.81 No.1
This study was conducted to provide basic information for deciding silvicultural system appropriate to a natural mixed stand in Jindong-Ri. For this, the stand structure such as DBH distribution, height distribution, and volume per DBH class were analyzed and the possibility of selection cutting as a silvicultural system was discussed. The DBH structure of the stand has reverse J-shaped diameter distribution which is typical in a selection cutting stand. The possibility of selection cutting is also accepted in the height structure by showing multi-storied height distribution of the stand. On the other hand, volume structure per DBH class did not show the mature stand of selection cutting due mainly to the lack of number of trees at 30㎝ DBH class and above. It seems that the unclear part of stand structure should be solved by further studies. Also, the rate of increment for DBH and volume should be estimated to predict the future stand structure.