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진달래나무의 立地選擇에 관한 연구

A Study of the habitat preferences of the azalea, Rhododendron mucronulatum T.

한국식물학회지 1970년 13권 3호 p.25 ~ 32
南榮佑,
소속 상세정보
南榮佑 (  ) - 서울대학교 교육대학원

Abstract

진달래나무가 많이 生育하고 있는 高陽郡의 한 山地를 調査地로 選定하여 方位別로 진달래나무의 出現頻度를 調査하고 그의 樹高를 測定하였다.
진달래나무의 各調査地域에서 土壞을 採取하여 分析하였다.
그 結果 다음의 事實을 밟혀 냈다.
(1) 진달래나무의 出現頻度는 北向斜面이 顯著히 높고 南向斜面은 아주 낮다.
(2) 진달래나무의 出現頻度는 土壞의 含水量(r=0.81) Humus 含量(0.80) 및 N 含量 (r=0.76)과 正相關을 나타낸다.
이 3要因의 部分栢關係數를 求한 바 含水量(r=0.63; 0.01>p)은 Humus含量(r=0.04; 0.01>p)보다 相關이 크므로 前者가 진달래나무의 출현빈도를 支配하는 主要因이라 하겠다.
N은 部分相關係數 (r=0.11)가 아주 작다.
(3) 진달래나무의 平均樹高는 北向斜面 (49.2㎝)이 南向斜面(31.3㎝)보다 크다. 本硏究를 위하여 助言을 해주시고, 원고를 校正해주신 서울大學校, 師範大學, 生物科 金遵敏博士에게 깊은 감사를 드리는 바이다.

The ratio of occurrence of azalea (Rhododendron mucronulatum T.) was determined on the north and south facing slopes on a mountain in Koyang county, Kyungi Province. Data was actually recorded at the eight aspects facing N, NE, E, SE, S, SW, W, and NW on the mountain.
In each of the eight aspects, six l0m transect tapes were placed in parallel directly down the slope, each 1m apart, and fifty 1㎡ quadrats were constructed between them.
Frequency of the azalea in each of these quadrats was determined by counting the central stumps of the bushes. Soil samples were also taken from pits dug in each plot to use for determinatioh of the following: Soil pH, soil moisture loss on ignition, total nitrogen, and available phosphorus.
The occurrence rate of azalea on the northern slop e was found to be far higher on the northern slope than on the southern slope. The abundance of azalea on the northern slope was found to be partially correlated with soil moisture(r=0.93;0.01>p) and the amount of humus in the soil (r=0.04;0´01>P).
The content of total nitrogen, soil PH, and available phosphorus in the soil, however, were found to have no evident relationship with the abundance of azalea.
The conditions for growth in the species of azalea Rhododendron mucronulatum T.´ were generally found to be more favorable on the northern slope.

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