恆春地區毛柿母樹林健康狀態評估

Assessment of Health Status on the Diospyros Philippensis (Desr.) Gurke Forest in Hengchun Area

郭家和(Chia-Ho Kuo) ； 林弘基(Hung-Chi Lin) ； 黃尚義(Shang-Yi Huang) ； 陳朝圳(Chaur-Tzuhn Chen) ； 張焜標(Kun-Piao Chang)

《中華林學季刊》 44卷3期 (2011/09) Pp. 425-433

https://doi.org/10.30064/QJCF.201109.0009

摘要

近年來隨著世界經貿組織（WTO）的成立與生物科技之進步，世界各國無不重視天然野生生物資源與種子認證的措施，以保護本國的自然貴重資源。林務局早期於恆春地區毛柿人工林，以表現型選擇法選擇120株母樹設置為台灣優良樹種母樹林，迄今已三十餘年。本研究利用前人研究所建立之林木健康指標調查表，進行恆春地區毛柿母樹林地面健康調查。調查資料經因素分析後，將林木健康因素選出6個健康指標，分別命名為活冠層指標、樹冠競爭指標、樹幹狀態指標、樹冠密度指標、根部損傷指標、樹冠梢枯指標。並建構毛柿母樹林5種等級之林木健康度。由評估結果得知，在120株母樹中共有63株（52.5%）母樹屬於健康以上的等級，其餘則呈現劣化現象，因此判斷恆春地區毛柿母樹林之健康度有趨於劣化之趨勢。

關鍵字

毛柿 ； 母樹林 ； 健康指標

並列摘要

In recent years, due to the set up of the World Trade Organization (WTO) and the progress of biotechnology, most of the countries around the world attempt to protect their natural bio-resources and also the certification of seed germ-plasm. Since last three decades, Taiwan Forestry Bureau had chosen Diospyros philippensis 120 seed-trees by phenotype selection in Hengchun area. In order to assess and classify the tree health condition, this study uses factor analysis from antecedent study to establish tree health indictors. By extracting from tree health factors, we chose six health indexes including live crown indicator, crown competition indicator, state tree indicator, crown denseness indicator, and root damage indicator, to establish five levels of tree health degree. The results indicated 63/120 (52.5%) seed-trees was evaluated health level, and the others were deteriorated. In this study, we indicated that the health of Diospyros philippensis (Desr.)Gurke forest are in a trend of deterioration in Hengchun area.

並列關鍵字

Diospyros philippensis (Desr.) Gurke ； Selected stand for seed collection ； Health index