초하우계의 지속적 항우일에 관한 연구 : 한국과 일본의 구주를 중심으로

박병익 서울대학교 지리교육과 1990 地理敎育論集 Vol.23 No.1

The purpose of this paper is to examine the definition and occurrence characteristics of the persistent rainy day in the early summer rainy season over South Korea and Kyushu, Japan. The results are as follows. 1) The wet spell of length k day is defined as k days when rainfall continues more than 1mm per day. We can make a frequency table(observed frequency) of the wet spell of each length at a station for a given period(in this paper, June and July, 1941∼1980). The probability of rainy day be P, and the probability of no rain day is 1-P(let's it be Q). If there is no persistence in daily rainfall, the occurrence probability of the wet spell of length k is P^kQ². If the total days are N(=61×40=2, 440), then the expected frequency(caculated frequency) of the wet spell of length k is NP^kQ² with the above hypothesis. Therefore, we can say that the persistent rainy day in the sense of the probability that the wet spell is longer than the first wet spell of which the observed frequency is higher than the calculated frequency on no persistence hypothesis(Table 1). By carefull examination of synoptic conditions of daily rainfall at some stations, we can define the persistent rainy day as the wet spell is longer than 3 days(* in Table 1). Expected number of days of the persistent rainy day is 7∼12 days in one rainy season(Fig. 4). 2) Contributions of the persistent rainy days to total precipitation of June and July are more than 50% at most stations(Fig. 3). 3) There is a high frequency of the persistent rainy day in the first and second ten days of June over Kyushu, and also in the third ten days of June and the first ten days of July over Korea and Kyushu(Fig. 5). In the second ten days of July the occurrence frequency of the persistent rainy day over Korea is different from that over Kyushu. 4) Total occurrence frequency of the persistent rainy day at each year(Fig. 6) corresponds to the activity of the early summer rainy seasons of East Asia; in years with many persistent rainy days the early summer rainy seasons are to be active. 5) The total occurrence frequency of the persistent rainy day appears to be ralated to the strength and northward displacement of the North-west Pacific Anticyclone and chatacteristics of the atmospheric circulation in middle-high latitudes. In a year with many persistent rainy days in June, the North-west Pacific Anticyclone was very strong and shifted northwardly, and cold air advection over the North-east Part of China from higher latitudes was strengthened(Fig. 7). In July the developments of the Okhotsk Anticyclone and the North-west Pacific Anticyclone were followed by a high frequency of the persistent rainy day(Fig. 8).

참싸리의 發芽 및 生育에 미치는 光波長의 影響

朴炳益,金榮浩 全北大學校 1968 論文集 Vol.10 No.-

To disclose the effects of light spectrum on the germination and growth of Lespedeza bicolor Turcz under the four light screens, i.e., yellow, green, blue and white, the germination beds were prepared. The observed items were germination percent, stem growth, root growth, the natural inoculation of root nodule bacteria. The results obtained are summarized as follows; (1) Significant differences in germination percent among light properties were calculated, those under white were mostly stimulated. (2) In stem growth, those under yellow mostly stimulated, the next was white. This means the efects of light on stem growth was significant. (3) In root length growth, those seedlings under white-natural light-indicated the longest growth, the next were yellow and green, the minimum was abtained under blue. (4) When measured four month after sowing, the greatest growth of weight was found under white, the minimum was blue. (5) In ratio of top/root, those under blue mostly stimulated, the next was green and yellow. (6) The nodule number and the total weight of the root nodule, it weighted less under blue light and more under white.

닥 나무 葉 形態의 變用에 대하여

朴炳益,李廣遠 全北大學校 1976 論文集 Vol.18 No.-

This study was carried out to investigate the morphological variation of the leaf of Paper Mulbery(Broussonetia kazinoki Sieb.) as known it's general character. In order to investigate the facts, every leaf was selected for samples from 1 year old to 3 years old of the paper mulberies growing in Jeonbuk national university nursery and investigated to their leaf's forms which are projected on the section paper from 3 days after they come into leaf to 52 days. The results are summarized as follows; 1. The variation of the leaf area on the paper mulbery is 39.490% a day, which is very great from 3 days after they come into leaf to 10 days. And from 10 days to 17 days the variaties show 5.337% a day. From 17 days to 52 days considerably slowly. 2. The one-year-old leaf has three-separably forms and the standard deviation between the both leaf margin length in 2.45. 3. The two-year-old leaf shows the variation comparatively very large. The three days' leaf forms after they come into leaf shows three-separably forms nearly with the standard deviation σ=1.06. But they show the variaties very large with σ=12.11 from 3 days to 10 days after they come into leaf 52 days after the standard deviation shows 7.92 and then we couldn't see the leaf serration of it's margin in one side. And the leaf has two-separably forms. 4. The 3 years old leaf shows an ovoid figure of the geographic characteristic and the standard deviation is 1.12. 5. All the leaf forms of the paper mulberies have the characteristic in that the leaf margin length of twig side is longer than the other side alternately.

土砂의 含有量이 流速에 미치는 影響

朴炳益 全北大學校 1964 論文集 Vol.6 No.-

This experiments was attempted in order to show the effects of sand gravel contented in water flow on the mean velocity in torrent through the observation of velociiy of orifice discharge from the water tank contented clay. The data obtained are summarized as follows : 1. It is shown that the water flowing velocity was decreased by the increased the ratio of water to clay contented in water tank. 2. As has been shown in Fig. 1 and 2, the mean velocity of wather flowing was greatly decreased when the volume ratio of clay to water was diminished. 3. It semed that the rate of velocity decreased was increased when glasstube length was long. 4. When glass tube diameter was large, the rate of velocity decreased was diminished.

砂防用 싸리種子의 水浸이 發芽에 미치는 影響

朴炳益 全北大學校 1964 論文集 Vol.6 No.-

The effects of soaking time in water on the germination of Lespedeza bicolar seeds used for erosion control were observed respectively; in incubator, at room, and on forestry nursery bed. The results are summarized as follows : 1. The seeds could germinate in any cass at light and dark condition, it is however certified that the Lespedeza bicolar seeds were lihgt demanding seed in its germination. 2. The begining of germination hardly recognized but the germination was hasted by long soaking time in water. 3. In the dark place, the percentage of germination was high acording to the long soaking time, but in the light place it shows the highest percentage in 3 days soaking. 4. The germination energy was the higher the longer soaking time.

소나무類의 組織 培養

朴炳益,高大植,洪性玉,崔萬峰 전북대학교 농업과학기술연구소 1974 農大論文集 Vol.5 No.-

The method and medium for obtaining callus and maintaining growth in tissue culture of koraiensis, P. rigida, P densiflora and P. thunbergii were adopted and the results are summarized as follows : 1. When cultivated in the Whites medium with each of seed extracted natural media, P. koraiensis only formed callus but P. rigida, P. densiflora and P,. thunbergii formed none. 2. When P. koraiensis was cultivated in a Whites medium modified by chestnut seed extract, firm brown callus was initiated at an explanat of it and has been successfully growing for 5 months.3. As for Korean pine seed extract, a higher concentration (75~90 mg/ℓ) inhibited the callus formation at an explant of P. koraiensis more than a lower concentration (15~30 mg/ℓ) but as for the chestnut extract, the opposited was the case. 4. The longer the size of explants on the culturing medium was, the less callus formation was made.

동아시아의 겨울철 일평균 기온 변화에 나타난 계절 내 변동의 군집분석에 의한 지역 분류

박병익 건국대학교 기후연구소 2017 기후연구 Vol.12 No.1

In this study, the intra-seasonal fluctuation (ISF) of wintertime temperature change in East Asia was classified by a cluster analysis of complete linkage. A ISF of temperature change was defined as a difference of synthesized harmonics (1 to 36 harmonic) of daily temperature averaged for 30 years (1951~1980, 1981~2010). Eight clusters were gained from the ISF curves of 96 stations in East Asia. Regions of the cluster C, G and A1 seem to be affected by the Siberian High (SH) center, whereas the cluster A1, A2, D, B and F by the SH main pathways. Regions of the cluster E are apart from the SH main pathways and appear to be in the area of influence of other factors. Wintertime temperatures in Northwest China (clusters C, G) and Northeast China (cluster A1) were increased very largely. In most clusters, around late January there were less warming periods than the winter mean of the mean ISF of the clusters, before and after this time there were more warming periods than the winter mean.

妊産婦産物의 流通過程에 관한 硏究 : I.價格動向을 中心으로 I.On the tendency of fruit price

朴炳益,姜聲然 전북대학교 농업과학기술연구소 1980 農大論文集 Vol.11 No.-

Results of analysis on main fruit resouces, demand and supply related with fruit resouces, marketing channel and price of fruits (forest by-products) are as follows : 1 Fruit resouces demand through protection and management to 9et more Products. It is hopeful to plant fruitful tree in economical forest stand, when considering economical view. 2. According to present increasing of fruit products, fruits exports must be expended to meet the increase of fruits. And so various supply methods, for examples, processing and caned goods, must be exploited. 3. For the protection of producers and consumers, the stabilization of fruit price is needed. And to decrease the rate of margin originated in the process of circulation is also necessary for the benefits of producers and consumers. Considering Present and future trends related with fruits, It is necessary to set up the stabilization fund for agricultural products and to develop a new way of stock fruits. For the stabilization of price and profits of producers, it must be put a gag in fore-selling(before harvest). 4. For a price stabilization and smooth supply of fruits, it would be need to regulate the big differences not only between the periods that the products are sufficiently and insufficiently supplied but also between the years that the price is high and low. This regulation would be achieved by encouraging the dispersed marketing of products which had been stored by producers and national or local governments.

닥나무의 夏揷에 관하여

朴炳益 전북대학교 농업과학기술연구소 1978 農大論文集 Vol.9 No.-

The effects of hormones and bed soils on rooting of summer wood cuttings of Broussonetia kazinoki were tested and the results are as follows; 1. Naphthaleneacetic acid(NAA) was more effective than indoleacetic acid (IAA) or indolebutyrica cid (IBA) in promoting the root formation of the cuttings. 2. The optimum concentrations of hormones were 10 ppm in NAA and IAA, and 15 ppm in IBA for rooting. 3. The cuttings treated with hormones, particularly with IAA, rooted better in a sand bed than in a clay soil, whereas the cuttings of control plot rooted better in the clay soil. 4. In general the hormone treated showed higher rooting percentages Iran Ire control plots.

堆石地斜面의 綠化方法과 綠化用 適合樹種 開發에 關한 硏究

朴炳益,朴鍾旻 全北大學校 1987 論文集 Vol.29 No.-

The purpose of this study is to develop the reclamation method and suitable species for afforestation on various kinds of stone armoring tips such as mining waste tips, ripped stone tips and weathered debris tips. 10 stone armoring tips and 30 species were estimated. The results of the study are summarized as follows; 1. In common characteristics of stone armoring tips, size of stones and void became larger and soil content became less with an increase in the deposition depth. 2. The most suitable reclamation technique is the pocket planting techique after foundation works like stone terracing. 3. It is necessary to use high water-retaining soil in earth and add organic matters to it. The suitable volume of soil must be determined by characteristics of tips and species planted. And it is essential, in order to retain and accelarate the effect of the earth, to apply the soil fixing treatment with anticorrosive materials. 4. In planting composition, it is available to make the ratio of evergreen trees to shrubs by 1:1 and plant evergreen prostrate shrubs or climbers to 50 percent within shrubs, and alter the order of planting of the same lifeformed species at each terrace. 5. The effective planting method is to plant three sapling or more per pocket in a group. 6. Within estimated species, the more suitable species for afforestation on stone armoring tips are 13 species, and 12 species are also considered good for the same purpose. Especially, 20 species unused before are developed as new plant materials for the environmental conservation.