Intraspecific and interspecific competition in Liquidambar formosana on Mount Tianmu
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摘要: 根据野外调查数据，利用Hegyi提出的单木竞争模型，对浙江省临安市天目山国家级自然保护区内枫香Liquidambar formosana的种内、种间的竞争强度进行定量分析。通过对保护区内145株枫香对象木以及614株竞争木的调查研究，结果表明：枫香的种内竞争强度随着林木径级的增大而减少；种内、种间竞争强度的顺序为：马尾松Pinus massoniana＞枫香＞杉木Cunninghamia lanceolata＞山合欢Albizzia macrophylla＞麻栎Quercus acutissima＞白栎Quercus fabri＞苦槠Castanopsis sclerophylla＞短尾柯Lithocarpus brevicaudatus＞锥栗Castanea henryi＞化香Platycarya strobilacea＞小叶栎Quercus chenii＞紫楠Phoebe sheareri＞檵木Loropetalum chinense＞粗糠柴Mallotus philippinensis＞木荷Schima superba＞黄连木Pistacia chinensis＞山矾Symplocos sumuntia等。竞争强度与对象木胸径服从幂函数关系，且当枫香胸高直径达到30 cm以上时，竞争强度变得很小。利用模型预测了枫香种内、种间的竞争强度。说明Hegyi的单木竞争模型可以为种内、种间竞争指数提供可适应的数量指标。图1表5参15Abstract: Field data from 145 Liquidambar formosana target trees and 614 individuals of competing species in the National Nature Rreserve of Mount Tianmu were quantitatively analyzed using the Hegyi competition index model for single-tree intraspecific and interspecific competition intensities. Results showed that competition intensity decreased gradually with an increase in tree diameter class. The order of intraspecific and interspecific competition intensity was as follows：Pinus massoniana ＞ Liguidambar formosana ＞ Cunninghamia lanceolata ＞ Albizia macrophylla ＞ Quercus acutissima ＞ Quercus fabri ＞ Castanopsis sclerophylla ＞ Lithocarpus brevicaudatus ＞ Castanea henryi ＞ Platycarya strobilacea ＞ Quercus chenii ＞ Phoebe sheareri ＞ Loropetalum chinense ＞ Mallotus philippensis ＞ Schima superba ＞ Pistacia chinensis ＞ Symplocos sumuntia. The competition index （IC） and diameter at breast height （DBH） of the objective tree were related. Also，when the DBH of Liquidambar formosana reached 30 cm，the competition intensity became very small. Simulating and predicting competition intensity of the Liquidambar formosana community suggested Hegyis competition model for individual trees could supply a quantitative index for study on intraspecific and interspecific relationships in plant population ecology and provide a reliable basis for the operation and management of the National Nature Rreserve of Mount Tianmu.［Ch，1 fig. 5 tab. 15 ref.］
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https://zlxb.zafu.edu.cn/article/doi/10.11833/j.issn.2095-0756.2012.05.001
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