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农学学报 ›› 2017, Vol. 7 ›› Issue (9): 21-25.doi: 10.11923/j.issn.2095-4050.cjas17060013

• 林学 园艺 园林 食用菌 • 上一篇    下一篇

马尾松林木生长、草本植物多样性及地形因子之间的关系

龙爱国,颜衡祁   

  1. 湖南省祁阳县大江林场,湖南省祁阳县大江林场
  • 收稿日期:2017-06-15 修回日期:2017-07-07 接受日期:2017-07-14 出版日期:2017-09-15 发布日期:2017-09-15
  • 通讯作者: 龙爱国 E-mail:lag654@sina.com
  • 基金资助:
    湖南省林业科技创新计划项目“衡阳紫色土丘陵坡地生态公益林恢复与示范”(XLK201341)。

Pinus massoniana: The Relationship Between Tree Growth, Herb Bio-diversity and Terrains

  • Received:2017-06-15 Revised:2017-07-07 Accepted:2017-07-14 Online:2017-09-15 Published:2017-09-15

摘要: 通过对湖南省祁阳县大江林场马尾松的生长、林下草本植物多样性以及地形因子的关系进行调查与分析。结果表明:(1)马尾松生长因子树高、胸径、枝下高、冠幅与坡度呈显著或极显著相关关系(P<0.05或P<0.01);(2)从相关系分析可得,马尾松生长因子对林下草本植物多样性影响程度的大小顺序为郁闭度(-0.911**)>枝下高(-0.645**)>胸径(-0.608*)>树高(-0.555*)>冠幅(-0.200) (*P<0.05;**P<0.01);(3)生态因子坡位与Margalef丰富度指数(R)与Simpson指数(D)呈极显著或显著负相关(P<0.01或P<0.01),说明在湖南省祁阳县大江林场坡位是影响马尾松林下草本植物多样性的主要生态因子。

关键词: 农民专业合作社, 农民专业合作社, 乡村振兴战略, 推动作用, 实证分析, 江苏省太仓市

Abstract: To better protect herb bio-diversity, the relationships between the growth of Pinus massoniana, herb bio-diversity and terrains were studied by field investigations, calculation and analysis. The results showed that: (1) there were significant and highly significant correlations among Pinus massoniana growth factors such as height, DBH (diameter at breast height), under crown height, canopy size and slope (P<0.05 or P<0.01); (2) in terms of correlation coefficients, the effect degree of Pinus massoniana growth factors on herb biodiversity followed an order as canopy (-0.911**)>under crown height (-0.645**)>DBH (-0.608*)>height (- 0.555*) >canopy size (- 0.200) (*P<0.05; **P<0.01); (3) there were highly significant and significant correlations between ecological factor such as slope position and Margalef richness index (R) or Simpson index (D), indicating that the slope position was the main ecological factor affecting undergrowth herb diversity of Pinus massoniana in Dajiang Forest Farm of Qiyang County. All the results indicated that timely tending and thinning of Pinus massoniana and appropriate plantation of herb under layer could increase undergrowth herb bio-diversity, and in favor of the protection and sustainable utilization of undergrowth bio-diversity.

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