應用指標評估法探討嘉義南靖糖廠平地造林林分適應性

本研究針對南靖糖廠所轄8處農場平地造林栽植之光蠟樹(Fraxinus formosana)、茄苳(Bischofia javanica)及水黃皮(Pongamia pinnata)林分進行調查，藉由林分適應性之指標評估法，利用林木的樹冠、葉片、枝條、樹皮和根部等10項林木生長特徵，評估林木遭受生長及環境壓力時，外觀適應特徵變化，再藉由因素分析歸納出樹冠活力、病害、蟲害及開花等四項指標，而這四項指標解釋總變異數70.46%以上；再依因素轉軸後之特徵解釋量為評估權重，以加權的方式計算出加權因素分數，做為林分適應性之評估依據，結果顯示目前林分適應性介於持平至良好間，林木生長發育則介於停滯至持續生長間，南靖糖廠轄下平地造林林分林木適應性之差異，需配合不同程度之育林撫育，以促進林木持續發育。

關鍵字

平地造林；適應性指標；因素分析

並列摘要

In this study, investigated species of Fraxinus formosana, Bischofia javanica and Pongamia pinnata planting in eight farms of Nanjing sugar refinery plain forest stand. Avoid planting and growth efficiency of age class differences, by investigated their variable adaptation assessment, adaptation assessment of 10 variables from the crown, leaves, branches, bark and roots of trees under stress revealed by the appearance of the assessment, the factor analysis to large amounts of data together into the following main factors, grouped into four main indicators of adaptability, crown vigor index, disease index, pests index, and flowering index, and that four components of the total variance of 70.46% or more, explain to the ground planting trees affected the ability of the new plant is very high, could stand by factors of adaptability indicators eigenvalues explained after the shaft to assess the amount of weight, the weighted way to calculate the weighted factor scores, results indicate the adaptability of forest stands around middle to good, the trees ranged from stagnation to sustained growth and development growth. To find the differences of Nanjing sugar plantation forest stand under the adaptability of the plains, with different levels of tending to promote sustainable forest development.

並列關鍵字

Plains afforestation ； Forest monitoring ； Adaptive indicators ； Factor analysis

國際替代計量

應用指標評估法探討嘉義南靖糖廠平地造林林分適應性

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