| 缪绅裕，陈志明，陶文琴，刘嘉俊，李晓杰，李卫坚，伍国仪，黄成辉.大东山不同海拔长柄双花木种群形态特征比较[J].广东农业科学,2013,40(12):167-170 |
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大东山不同海拔长柄双花木种群形态特征比较 |
| Comparsion on morphological characteristics of Disanthuscercidifolius var. longipes populations growing atdifferent altitude in Dadongshan |
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| DOI： |
| 中文关键词: 长柄双花木 种群 形态特征 火烧迹地 南岭大东山 |
| 英文关键词: Disanthus cercidifolius var. longipes population morphorlogic characteristics burned area Dadongshan, Nanling mountain |
| 基金项目:广东省自然科学基金(S2012010009714) |
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| 摘要点击次数: 1376 |
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| 中文摘要: |
| 在样地调查基础上，比较研究了南岭大东山不同海拔高度（低、中、高）的3个长柄双花木天然和1个火烧迹地种群的形态学特征。结果表明，3个天然种群的形态特征基本一致，尤其是群落乔木层物种数和郁闭度。中海拔的天然种群中总丛数最大，但平均每丛的分株数最小。总个体数和密度随海拔上升而下降；乔木层个体所占比例、平均高度、平均地径则随海拔上升而增大。3个天然种群个体的地径与胸径尧地径与高度的5种函数渊指数、线性、对数、多项式和乘幂冤的相关系数均达极显著水平，地径与胸径的相关系数均为多项式>线性>指数>乘幂>对数，地径与高度相关系数均以线性和指数式的最低。火烧迹地种群因火后恢复时间短，多数形态指标均显著小于各天然种群。 |
| 英文摘要: |
| Based on the field survey data of vegetation quardat, the morphorlogical characteristics of three nature populations of Disanthus cercidifolius var. longipes at different altitude (low, middle, and high) in Dadongshan, Nanling Mountain and one recovery population at burned area are compared. Results showe that the morphological characteristics of three natural populations are basically the same, especially for richness of arbor species and coverage of community. There are highest total cluster for population at middle altitude,with a lowest mean individuals of each cluster. With increasing of altitude, all the total individuals and desity decrease, while the ratios of arbor individuals to total individuals, mean height, and mean basal diameter increase. For five mathematic functions (index, linearity,logarithm, multinomial, and power), the correlative coefficients of basal diameter and breast height diameter, basal diameter and height of three natual population all reach a very significant level. The orders of correlative coefficients for basal diameter and breast height diameter are all multinomial>linearity>index>power>logarithm. For correlative coefficients of basal diameter and height, the linearity and index are all the lowest. Because of the short recovery time, almost all the morphorlogical indexes of the population at burned area are significant lower than that of the three natural populations. |
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