[1]郑子洪,郑伟成,杨晓君,等.浙江九龙山香果树径级结构和空间分布格局[J].浙江林业科技,2023,43(06):1-9.[doi:10.3969/j.issn.1001-3776.2023.06.001]
 ZHENG Zihong,ZHENG Weicheng,YANG Xiaojun,et al.Diameter Class Structure and Spatial Distribution of Emmenopterys henryi in Zhejiang Jiulongshan National Nature Reserve[J].Journal of Zhejiang Forestry Science and Technology,2023,43(06):1-9.[doi:10.3969/j.issn.1001-3776.2023.06.001]
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浙江九龙山香果树径级结构和空间分布格局()
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《浙江林业科技》[ISSN:1001-3776/CN:33-1112/S]

卷:
43
期数:
2023年06期
页码:
1-9
栏目:
出版日期:
2023-12-01

文章信息/Info

Title:
Diameter Class Structure and Spatial Distribution of Emmenopterys henryi in Zhejiang Jiulongshan National Nature Reserve
文章编号:
1001-3776(2023)06-0001-09
作者:
郑子洪1郑伟成2杨晓君1唐战胜1郑蓉3骆争荣4
1.浙江九龙山国家级自然保护区管理中心,浙江 遂昌 323300;2.遂昌县生态林业发展中心,浙江 遂昌 323300;3.浙江师范大学 生命科学学院, 浙江 金华 321004;4.丽水学院 生态学院,浙江 丽水 323000
Author(s):
ZHENG Zihong1ZHENG Weicheng2YANG Xiaojun1TANG Zhansheng1ZHENG Rong3LUO Zhengrong4
1.Jiulongshan National Nature Reserve Administration of Zhejiang, Suichang 323300, China;2.Suichang Ecological Forestry Development Center of Zhejiang, Suichang 323300, China;3.School of Life Science, Zhejiang Normal University, Jinhua 321004, China;4.College of Ecology, Lishui University, Lishui 323000, China
关键词:
香果树径级结构存活曲线空间格局九龙山国家级自然保护区
Keywords:
Emmenopterys henryi diameter class structure survival curve spatial pattern Jiulongshan National Nature Reserve
分类号:
Q948.1
DOI:
10.3969/j.issn.1001-3776.2023.06.001
文献标志码:
A
摘要:
本研究在九龙山自然保护区香果树Emmenopteryshenryi分布地建立35个以香果树为中心,半径为15m的圆形样地,调查样地内胸径2.5cm以上的所有树木的胸径、物种及其与中心树间的距离,利用种群径级结构、存活曲线分析种群动态,应用空间点格局分析揭示香果树种内及其与其他种类伴生树的空间格局。结果表明:(1)胸径2.5cm以上的香果树种群中的小树(胸径<7.5cm)和超大树(胸径≥37.5cm)数量少,种群更新出现困难,存活数量随着径级的增长而稳定下降,存活曲线符合Deevey的Ⅱ型;(2)香果树种群的空间分布格局随距离增加,由聚集(4m以内)变为随机(4~15m)分布,在3~15m范围内共生的香果树多来自同生群;(3)随着距离的增加,中心香果树与其他种类伴生树的空间关系由独立分布(5.5m以内)变为相互聚集(5.5~14m),聚集于中心香果树周围的其它物种伴生树主要是小树、中树(7.5cm≤胸径<22.5cm)和大树(22.5cm≤胸径<37.5cm),中心香果树与其它物种超大伴生树间在空间上独立分布,在3m范围内中心香果树与其它种类伴生树的胸径差异较大。以上研究结果表明,九龙山香果树种内竞争以同生群个体间竞争为主;香果树母树周围有利于其它种类乔灌木小树的生长,而这些异种的小树生长却阻碍了扩散距离有限的香果树幼苗在母树周围的更新,使得香果树种群更新出现困难。
Abstract:
In July 2021, 35 permanent sample plots centered of one Emmenopterys henryi tree were established in natural distribution areas of E. henryi in Jiulongshan National Nature Reserve, Zhejiang province. Investigations were conducted on DBH, species of trees and shrubs with DBH of more than 2.5 cm and their distance to the center tree in the plots. The results showed that few small (DBH < 7.5 cm) and large trees (DBH > 37.5 cm) in the plots indicated difficult regeneration of the population. The number of conserved E. henryi trees decreased with the increase of diameter class,and the survival curve accorded with Deevey’s type II. The spatial distribution pattern of the E. henryi population changed from aggregation (within 4 m) to random (4-15 m) from the center. Most of the conspecific neighbors of the center E. henryi trees in the range of 3-15 m were from syngenetic groups. The spatial relation between the central E. henryi tree and associated trees changed from independent distribution (within 5.5 m) to mutual aggregated one (5.5-14 m). The aggregated trees around the central E. henryi tree were mainly small and medium. The central E. henryi tree and the super large associated trees distributed independently . In the range of 0-3 m, the DBH of associated trees was quite different from that of the centreal E. henryi trees. The results showed that the intraspecific competition of E. henryi in the Reserve was mainly from syngenetic trees. The surrounding of the mother E. henryi was favorite to the growth of heterospecific trees, while the growth of these heterogeneous small trees limit the regeneration of E. henryi.

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备注/Memo

备注/Memo:
收稿日期:2023-06-19;修回日期:2023-09-23
基金项目:丽水市科技计划项目(2022SJZ099);浙江省自然科学基金(LY20C030002)
作者简介:郑子洪,高级工程师,从事植物资源保护与开发利用研究;E-mail: zzh19680803@163.com。
通信作者:骆争荣,博士,副教授,从事植物生物多样性的研究;E-mail: zrluo@126.com。
更新日期/Last Update: 2023-12-20