아까시나무조림지의 (造林地) 물질생산량에 관한 연구

김갑덕,김태욱,이경재,김준선 ( Kap Duk Kim,Tae Wook Kim,Kyong Jae Lee,Joon Seon Kim ) 한국산림과학회 1985 한국산림과학회지 Vol.68 No.1

To study the comparison of the aboveground biomass of Robinia pseudoacacia L. of 8-, 13- and 20-year-old plantations, the experimental plot of 100㎡ in size located in Youngin-gun were selected. Seven sample trees at different stand ages selected taking account of DBH distribution were felled and the diagram of oven-dry weight distribution of stem, branch and leaf for each 1m segment was constructed. The dry weight of each part of plots was estimated by the method of basal area ratio. If the estimations are extended to a hectare area stand, it contains 36.72, 69.28 and 118.67 tons of the aboveground standing crops in 8-, 13- and 20- year-old stand respectively. The net production was estimated to be as much as 12.56, 13.23 and 16.78 tons per hectare per year and the net assimilation ratio 3.66, 4.13 and 2.50 ㎏/㎏/yr in 8-, 13- and 20-year-old stand respectively. And the efficiency of leaves to produce stem was 1.69, 2.10 and 0.96 ㎏/㎏/yr in same order.

중부지방 낙엽송림분의 (落葉松林分) 재적식 (材積式) 및 수고식에 (樹高式) 관한 연구

김갑덕,정성학 ( Kap Duk Kim,Song Hak Choung ) 한국산림과학회 1988 한국산림과학회지 Vol.77 No.1

A total of 320 Larix leptocepzs Trees growing in Kyonggi and Kangwon Province were examined to estimate tree volume and height with DBH and age. The criteria of selecting the $quot;best$quot; regression equation were based on coefficient of determination, R2, adjusted standard error, I, and the ease of application. From the results obtained in this study, the method of estimating tree volume and height with DBH and age showed the following advantages ; 1. Since no measurement of tree height is needed, it saves time and labor in forest survey. 2. It has the ease of application because age is determined directly in artificial forests. 3. Volume and height can be estimated more easily and accurately with DBH and age than other methods.

Landsat TM Data 와 흑백적외선 항공사진을 이용한 임상구분에 (林相區分) 관한 연구

김갑덕,이승호,김철민 ( Kap Duk Kim,Seung Ho Lee,Cheol Min Kim ) 한국산림과학회 1989 한국산림과학회지 Vol.78 No.3

Accurate and cost--effective classification of forest vegetation is the primary goal for forest management and utilization of forest resources. Aerial photograph and remote sensing are the most frequent and effective method in forest resources inventories. TM and MSS are the principal observing instruments on the Landsat- 4 and -5 earth observing satellite. Especially TM has considerably greater spatial, spectral, and radiometric resolution power than MSS, that is, the IFOV of TM at a nadir is 30m compared to 80 m for MSS. In this study, we used TM data to classify forest types and compared the result with forest type map manufactured by interpretation of B/W infrared photographs. As a result, land use types were well defined with TM data. Put classifying forest types was a little difficult and indistinct. However, the spectral signatures of forest in every season and growing stages remained as problems to be solved, and also the most effective selection and combination method of bands for differentiating the spectral plots among classes.

곰솔 성장(成長)에 대(對)하여

김갑덕,Kim, Kap Duk 한국산림과학회 1968 한국산림과학회지 Vol.8 No.1

4개지역(個地域)에서 생육(生育)하고 있는 곰솔의 성장비교(成長比較)을 하였는데 그 결과(結果)는 다음과 같다. (1) 직경성장(直徑成長)이 가장 양호(良好)한 곳은 합천(陜川)이고 다음이 울산(蔚山), 제주(濟州), 수원(水原)의 순위(順位)였다. (2) 수고성장(樹高成長)이 가장 양호(良好)한 순위(順位)을 보면 울산(蔚山), 수원(水原), 합천(陜川), 제주(濟州) 순(順)이다. (3) 재적성장(材積成長)이 가장 양호(良好)한 순위(順位)을 보면 합천(陜川), 울산(蔚山), 제주(濟州), 수원(水原)으로 되어있다. (4) 위의 것으로 미루어 볼 때 곰솔이 해안수종(海岸樹種)으로 알려져 있으나 성장(成長)은 내륙지방(內陸地方)이 도리어 도서지방(島嶼地方) 또는 해안지방(海岸地方)보다 양호(良好)하였다. The growth of Pinus Thunbergii in the four areas was compared with each other, and the results obtained are as follows ; 1. The diameter growth in HAP-CHUN area was found the best, and that of WOOI-SAN, CHE-JU, and SUWON areas was followed in order. 2. The height growth was found the best in WOOI-SAN area, and followed SUWON, HAP-CHUN, and CHE-JU areas in order. 3. The volume growth was found the best in HAP-CHUN area, followed next in order were : WOOL-SAN CHE-JU, and SUWON. 4. Based on the above-mentioned results, it was concluded that the growth of Pinus Thunbergii in inland areas was better than that in islands or coastal areas. This is against the common understanding that Pinus Thunbergii species grow better in coastal areas.

삼림축적조사법

김갑덕 ( Kap Duk Kim ) 한국산림과학회 1962 한국산림과학회지 Vol.1 No.1

항공사진을 이용한 산림자원조사법의 연구

김갑덕 ( Kap Duk Kim ) 한국산림과학회 1976 한국산림과학회지 Vol.30 No.1

This study was performed in Bo-Eun Gun, Chung-Cheong Buk Do. The forest types having been classified, the each area was measured by dot-grid method. The 820 sample points having been obtained by systematic sampling method, the tree heights, crown densities, crown diameters in the points were measured on the aerial photography, and the volumes per hectare were estimated by the comparison with stereogram. Thirty eight plots, which amounted to about 4.5% af all the sample points, were sampled with double sampling method and volume were measured by the ground survey method. the results were summarized as follows: 1. There is no significant differentia between the values measure by dot-grid method and the statistical values obtained by the authority for the area. 2. There is no significant differentia between the estimated values and the measured values for the volume. And the coefficient (τ) was 1.18 3. the heights of conifer trees were easily measured more or less, but it was some difficult for the deciduous trees, because the tops of trees were not observed easily. 4. All the values had a tendencies to be overestimated in the low stocked stand and to be underestimated in the high stocked stand. 5. When the aerial volume table method by ground checking needs to be used together, the work should be performed by the experienced technician and the photgraphic volume table should be made in advanced of the work

직경생장률에 대하여

김갑덕 ( Kap Duk Kim ) 한국임학회 1962 한국산림과학회지 Vol.2 No.1

활엽수림에 (闊葉樹林) 대한 자원조사법의 연구

김갑덕 ( Kap Duk Kim ) 한국산림과학회 1973 한국산림과학회지 Vol.17 No.1

Deciduous trees grown naturally in the forest of Korea usually have an irregular Lee-form and their utility has been decreased. In Korea, most of the deciduous stands are distributed in the hinterland. A shortage of the total growing stock made utilization of them necessary in this country even though some difficulties to be cutted and transported are accompanied. Therefore, this study was conducted to select the suitable sampling method for surveying them. The results investigated are as follows. 1. Three locations being 10 hectares in each location for the plots were chosen and surveyed with six 20m × 50m rectangular sample plots by four types of sampling method below. And the result is shown in Table 1. A. Random sampling by grids B. Random sampling by co-ordinates C. Systematic line plot. D. Sub-sampling 2. One hundred and fifty hectares from all plots were sectioned through the application of aerial photography scaled of 1 : 15,000. The author divided forest types according to diameter class and crown density with mirror stereoscope. The forest types were divided into three classes. Seven sample plots from the area of 150 hectars are systematically arranged and the results investigated on the circular sample point of 0.1 hectare are shown in Table 4. 3. There were no significant differences between results by sampling method and by diameter measurement method (population mean) as shown in Table 3. 4. Random sampling by grid and systematic line plot are better than others. 5. There are more over-estimated values when the circular sample point is used than where the rectangular sample point. 6. As forest stands are irregular, smaller number of sample points will make many errors.

임업에 있어서 원격탐사술의 (遠隔探査術) 적용방법에 관한 연구

김갑덕 ( Kap Duk Kim ) 한국산림과학회 1987 한국산림과학회지 Vol.76 No.1

The various conditions of photographs, especially kinds of films, combinated filters and seasons are important factors for forestry purpose aerial photography. In this paper the variations of tones were compared between color and color infrared, panchromatic black and white and infrared black and white, and among false color photographic images created by using 3 kinds of filters when prints are made. Color infrared film was good for identifying tree species, for its spectral signatures had a greater range of tones and hues than color signatures. In that case taken in May were more effective than taken April. False color photographs were not so good as color photographs because they were mostly dark and indistinct. Infrared black and white film with medium red filter showed potential for separating broad-leaved forests from conifers. MSS composed photographs, when composed with proper bands and densities, were proved useful for distinguishing land use types but not applicable to more detailed practices such as forest type separation and tree species identification.

아까시나무造林地의 物質生産量에 關한 研究

金甲德(Kap Duk Kim),金泰旭(Tae Wook Kim),李景宰(Kyong Jae Lee),李俊選(Joon Seon Kim) 한국양봉학회 1986 韓國養蜂學會誌 Vol.1 No.1