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研究了100m×140m固定样地内黄连木种群的性比格局和空间分布。结果表明,调查样地中dbh≥4cm的黄连木植株共有2116株,其中包括526株雌树,1200株雄树,性别未确定植株390株。黄连木性比(雄/雌=2.28)显著偏雄(P<0.001)。雌树和雄树平均胸径分别为7.34和7.81cm,雄树胸径显著大于雌树胸径(P<0.05)。黄连木幼树、雌树和雄树均呈显著聚集性分布。黄连木幼树与雌树、幼树与雄树均在较小尺度上表现为相互吸引;雌树与雄树则在空间上相互排斥,即雌树与雄树存在空间分离现象;黄连木不同大小以及不同性别植株之间主要表现为相互排斥。
The sex ratio pattern and spatial distribution of Pistacia chinensis population in 100m × 140m fixed plot were studied. The results showed that there were 2116 plants with dbh≥4cm in the sample plots, including 526 female trees, 1200 male trees and 390 female plants with unknown sex. Coptis wood sex ratio (male / female = 2.28) was significantly (P <0.001). The average DBH of female and male trees were 7.34 and 7.81 cm, respectively. The DBH of male trees was significantly larger than that of female trees (P <0.05). Pistacia saplings, female trees and male trees were significantly aggregated distribution. Pistacia saplings and females, saplings and males are shown to attract each other on a smaller scale; female and male are spatially mutually exclusive, that is, there is spatial separation between female and male trees; Pistacia different Size and gender differences between the main performance of the plants are mutually exclusive.