松栢林土壤의 最少養分水準에 關한 統計學的 硏究
Estimating the minimum levels of soil nutrients for Japanese red pine, Pitch pine, and Konean Pine.
한국생활과학연구원논총 1968년 1권 0호 p.23 ~ 33
朴奉奎, 金遵敏, 張楠基,
소속 상세정보
朴奉奎 ( )
梨花女子大學校 文理大學
金遵敏 ( )
서울사대
張楠基 ( )
서울사대
KMID : 0380319680010000023
Abstract
소나무, 이기다솔, 잣나무等의 松柏類의 林地를 대상으로 樹木의 生長과 林土의 特性을 硏究하여 名樹木의 最少養分水準을 決定하였다.
1. 소나무의 site index(樹高一樹齡)는 9, 18, 29이고 리기다솔에서는 25, 32, 35, 잣나무에서는 21, 24, 29였다.
2. 소나무 植林에서 年平均樹高生長은 土壤有機物, 有效 N, P, K, 置換性 Ca, Mg, 徵砂와 粘土, 土壤含水量 等과 正相關을 나타낸다.
3. 리기다솔, 잣나무는 土壤有機物, 有效窒素, 含水量 等이 年平均樹高生長과 相關을 나타낸다.
4. 소나무, 리기다솔 및 잣나무의 生長率과 土壤特性 間의 回歸方程式은
소나무 :
Y=-5.1+1.1Xo+1.6Xn+0.15Xp+0.34Xc+0.01Xk+0.25Xw
리기다솔 :
Y=10.0+0.12Xo+1.1Xn+0.15Xp+0.34Xc+0.01Xk+0.03Xw
잣나무 :
Y=10.3+0.10Xo+1.2Xn+0.15Xp+0.34Xc+0.01Xk+0.04Xw
여기서 Y=年平均樹高生長率(cm/year)
Xo= Organic matter(%)
Xn= Potential available nitrogen (ppm)
Xp= Available phosphorus (ppm)
Xc= Clay and silt (%)
Xk= Available potassium (%)
Xw= Water content (%)
5. 松柏類의 植林을 爲한 最少養分水準은 다음과 같다.
소나무 : Reaction (pH) 4.1-6.0
Clay and silt (%) 7.00
Organic matter(%) 2.5
Potential available N (ppm) 16.0
Available p (ppm) 1.80
Available K (%) 0.20
Exchangeable Ca (%) 0.100
Exchangeable Mg (%) 0.030
Water content (%) 17.00
리기다솔 : Reaction (pH) 4.3-6.0
Clay and silt (%) 14.00
Organic matter(%) 3.0
Potential available N (ppm) 20.0
Available p (ppm) 1.8
Available K (%) 0.20
Exchangeable Ca (%) 0.100
Exchangeable Mg (%) 0.030
Water content (%) 21.00
잣나무 : Reaction (pH) 4.3-6.0
Clay and silt (%) 14.00
Organic matter(%) 3.0
Potential available N (ppm) 17.0
Available p (ppm) 1.8
Available K (%) 0.20
Exchangeable Ca (%) 0.100
Exchangeable Mg (%) 0.030
Water content (%) 20.0
6. 이러한 最少養分水準을 나타내는 土壤에 소나무, 리기다솔, 잣나무가 植林되었을 때에는 各 樹木의 年平均樹高生長은 各各 30cm, 38cm, 36cm가 될 것이다.
The aim of the present investigation is to estimate the minimum levels of soil un trients for Pinus densiflora, P.rigida, and P.Koraiensis plantations established on diff erent soils. These stands are subdivided into 3 classes based on the following ranges of site indices:9,18, and 27 in P.densiflora plantations, 25, 32, ane 35 in P. rigida, and 21, 24, and 29 in P. Koraiensis
Results of multipel and simle correlation analysis reveal highlyl significant correlatio n between annual height growth of plantations and soil texture, content of organic matter, potential available nitrogen of available phosphorus. The content of available pot assium, exchangeable Ca and Mg, and water content are significantly incorrelated with height growith in the simple correlations, apparently because they are present in 벼무 tities above the response limit. The strong effect of potential available nitrogen and a vailable phosphorus, revealed by regression analysis, is of special importance in refore station.The effect of siol constituents on the average annual height growth (Y: cm Year) is expressed by the following regression equation:
Y=-5.1+1.1 Xorganic matter+1.6X availableN+0.15 X available p+0.34 X clay and silt+0.01 Xavailable k+0.25 X water content (P. densiflor plantation),
Y=10.0+0.12 X organic matter X availavleN+0.15 X available p+0.34 X clay and silt+0.03 X water content (P. rigida plantation), and
Y= 10.3+0.10 X organic matter+1.2 X availableN+0.15 X available p+0.34 X clay and silt+0.01 X available k+0.04 X water content (P.Koraiensis plantation).
The minimum levels of soil nutrients for planting P. densiflora, P. rigida, and P. Koraiensis are established on the basis of the average values determined in soil supporting plantations of medium site quality.
These levels of fertility promise an average height growth of 30 cm (in P. densiflora), 38 cm (in P. rigida), and 36 cm (in P. Koraiensis) per year.
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