Effects of Rigid Pavement on Natural Regeneration of Ailanthus Altissima in Urban Greenland

YANG Jianan; LI Lanlan; LI Xin; LI Hongyuan; QI Yong; WANG Binbin

doi:10.13961/j.cnki.stbctb.2015.05.096

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Effects of Rigid Pavement on Natural Regeneration of Ailanthus Altissima in Urban Greenland

- Effects of Rigid Pavement on Natural Regeneration of Ailanthus Altissima in Urban Greenland
- Bulletin of Soiland Water Conservation Vol. 35, Issue 5, Pages: 164-168(2015)
- 作者机构：
  
  1. 南开大学环境科学与工程学院,天津,300071
  2. 天津绿茵景观工程有限公司,天津,300384
  3. 天津市景观生态修复企业重点实验室,天津,300384
- 作者简介：
- 基金信息：
- DOI：10.13961/j.cnki.stbctb.2015.05.096
  CLC：
- Published：2015
- 稿件说明：
移动端阅览
YANG Jianan, LI Lanlan, LI Xin, et al. Effects of Rigid Pavement on Natural Regeneration of Ailanthus Altissima in Urban Greenland[J]. Bulletin of Soiland Water Conservation, 2015, 35(5): 164-168.
DOI：

YANG Jianan, LI Lanlan, LI Xin, et al. Effects of Rigid Pavement on Natural Regeneration of Ailanthus Altissima in Urban Greenland[J]. Bulletin of Soiland Water Conservation, 2015, 35(5): 164-168. DOI： 10.13961/j.cnki.stbctb.2015.05.096.

摘要

[目的

]

调查研究天津市南开大学校园绿地内臭椿(Ailanthus altissima)的天然更新状况

为城市自然林营造和管理提供科学依据。[方法

]

采用样方法进行调查

研究了臭椿更新苗数量特征、地径级和高度级的分布特征

用方差均值比率(C

)、丛生指标(I)、负二项参数(K)、平均拥挤度指数(m

)、聚块性指数(C)和格局指数(I

) 6种聚集强度指数分析臭椿更新苗的空间分布格局。[结果

]

(1)城市绿地内臭椿存在天然更新现象

其更新苗地径级频率高峰出现在2~3 mm地径级

且随着地径级的增大和减小

更新苗数量减少。更新苗高度级频率分布呈"间歇"型

个体频率高峰出现在低高度级上

主要集中在2~4 cm高度级内。(2)城市绿地内臭椿更新苗的空间分布表现为集群分布

其C

分别为2.24

1.26

2.81

1.79

1.24

1.79。[结论

]

硬质铺装影响臭椿天然更新的距离特征及更新苗的空间分布。

Abstract

[Objective] The natural regeneration of Ailanthus altissima in Nankai University were investigated in order to provide the scientific basis for urban natural forest construction and management.[Methods] We used the quadrat sampling method to investigate the quantity

ground diameter and height of A. altissima in Nankai University. The gather intensity indexes including Cx

C and IΔ were used to analyze the spatial distribution pattern of natural regeneration seedling in A. altissima.[Results] (1) A. altissima regenerated naturally in urban greenland. The peak regeneration occurred at seedlings with ground diameter of 2~3 mm. The height level frequency distribution of seedlings showed a "intermittence" type

which was mainly distributed at the height of 2~4 cm.(2) The value of Cx

IΔ was 2.24

1.26

2.81

1.79

1.24 and 1.79

respectively.[Conclusion] Rigid pavement influences the distance of natural regeneration and the spatial distribution of seedlings.

关键词

Keywords

references

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