Abstract
Total area of bamboo groves in Korea which is limited to $37^{\circ}$ north latitude, i.e., to southern part of Chungchung-nam-do Province and Kangwon-do Province, is 3,235ha., but this country must import about 3,000 metric ton's bamboo culms from Japan every year. It may be true that the country is not so fit for economical cultivation of bamboo groves from the view point of climatic condition, but the author believes that self-sufficiency in bamboo is not impossible if some scientific method for improving bamboo groves is introduced to our primitive groves. Keeping this point in his mind the auther tried to study on the bamboo groves in the country, and as the first step set about to investigate the actual state of twenty good bamboo groves located in Cholla-nam-do Province from March, 1961 to January, 1962. This is a report on some characters of bamboo culms and growing stock with samples collected in the present investigation. 1) Numbers of bamboo culm per 0.1ha. are 1,183 in average, 1,840 in maximum and 87.5 in minimum before harvesting. 2) According to owners' saying, 1960 was such an off-year that they could hardly see any yearling bamboos in groves, but in 1961 very many new bamboos are produced as follows: the proportion of the number of yearling bamboos produced this year to that of mature bamboos (over 2 years old) is 58.7% in average; the highest 110.5% and the lowest 16.8%. 3) the average diameter of culms at eye height is 6.5cm, but the biggest diameter comes to 11.2 cm, and the average diameters of yearling and mature bamboos are 6.5cm and 6.6cm respectively. 4) Internode length records 29.4 cm in average, the shortest 21.3 cm and the longest 38.4 cm. Average internode lengths of new culms and mature culms are 27.6 cm and 29.4 cm respectively. This shows that the internode length of new culms is in the decrease to that of maturer's. 5) Through this investigation, it was found that internode length is in the influence of the exposure and density of bamboo groves, i. e., the more the dencity of bamboo groves is and the more the exposure nears the north-east, the longer the internode length becomes (see Table 7 and 8). 6) In the growing stock of bamboo groves, bundles per 0.1ha. amount to 271 sok (unit of bundle) in total average, 445 sok in maximum and 126 sok in minimum. 7) Among twenty typical bamboo groves, chosen in each County in Cholla-nam-do Province, only one passes perfectly by Veda's standard rule* prescribing the good bamboo grove, but the eight groves shown in Table 9 could be recommended as good ones in Cholla-nam-do Province, because the auther believes that those groves may be improved better, if we pay more attention to the management of them. 8) Considering that they have managed their groves carelessly and primitively, and that unfortunately their groves must have faced almost on clear felling over the entire area at the time of the Korean War, we can surely expect much more increments in bamboo groves, if we introduce some scientific methods in managing their groves.
전라남도(全羅南道)의 각군(各郡)에서 대표(代表)가 될 만한 죽림(竹林) 20개(個)를 선정(選定)코 죽간(竹桿)의 몇가지 형질(形質)과 축적(蓄積)에 대(對)하여 조사(調査) 고찰(考察)한 결과(結果)를 간추려 보면 다음과 같다. (1) 반당(反當) 평균(平均) 죽림(立竹) 본수(本數)는 벌죽(伐竹)의 전(前)의 경우에 전체(全體)(20개림(個林)) 평균(平均)으로 1,183본(本)이고, 개별적(個別的)으로는 해남군(海南郡) 민씨림(閔氏林)의 1840본(本)이 최고(最高), 장성군(長城郡) 이씨림(李氏林)과 보성고음(寶城古邑)의 박씨림(朴氏林)의 875본(本)이 최저(最低)였고, (2) 1960죽년도(竹年度)의 흉년(凶年)에 이어 1961죽년도(竹年度)는 대풍년(大豊年)으로 모죽(母竹) 본수(本數)에 대(對)한 신줄(新竹)의 백분(百分) 대조비(對照比)가 58.7에 달(達)했으며, 그 최고(最高)는 110.5 최저(最低)는 16.8의 치(値)를 주고 있다. (3) 안고(眼高) 주위(周圍)는 전체(全體) 평균(平均)이 6.5 촌(寸)이고, 극치(極値)로는 11.7 촌(寸)가 최고(最高)이며, 신죽(新竹)의 평균치(平均値)는 6.3 촌(寸) 모죽(母竹)의 치(値)는 6.6 촌(寸)로 신죽(新竹)의 경우가 0.3 촌(寸)나 감소(減少)하고 있다. (4) 절간장(節間長)은 전체(全體) 평균(平均)이 9.8 촌(寸), 극치(極値)는 최고(最高)가 12.8촌(寸), 최저(最低)가 7.1촌(寸)를 기록(記錄)하고 있다. 또 신죽(新竹)의 평균치(平均値)는 9.2 촌(寸)로서 모죽(母竹)의 평균(平均) 9.8 촌(寸)보다 0.6 촌(寸)나 낮은 치(値)를 보여 주고 있다. (5) 축적(蓄積)은 전체평균(全體平均)이 반당(反當) 271속(束)이고, 개별(個別) 최고치(最高値)는 445속(束), 최저치(最低値)는 126속(束)으로 319속(束)이란 큰 교차(較差)를 주고 있다. (6) 일본(日本)의 상전(上田)이 말하는 양죽림(良竹林) 표준(標準)에 완전(完全)히 통과(通過)할 수 있는 죽림(竹林)이란 20개림(個林) 중(中) 1개림(個林)에 불과(不過)하나 표(表) 9에 열거(列擧)한 8개림(個林)은 양죽림(良竹林)으로 추천(推薦) 하더라도 아우런 손색(遜色)이 없을 것으로 사료(思料)됨. (7) 본조사(本調査)를 통(通)하여 본도(本道)의 죽림(竹林) 관리(管理) 상태(狀態)는 대체(大體)로 원시적(原始的)이며 약탈적(掠奪的)인 경영(經螢) 방식(方式)을 취(取)하고 있음을 알았는데 그래도 이 정도(程度)의 죽림(竹林)을 얻을 수 있었다는 것은 앞으로 구태(舊態) 의연(依然)한 관리(管理) 방식(方式)을 탈피(脫皮)하고 과학적(科學的)인 경영(經螢) 방식(方式)을 도입(導入)할 수 있다면 상당(相當)한 증산(增産)을 기대(期待)할 수 있으리라고 믿는다.