南亚热带红锥大径材培育林幼苗更新及其与母树的空间关联性

doi:10.13287/j.1001-9332.202004.009

应用生态学报 ›› 2020, Vol. 31 ›› Issue (4): 1055-1062.doi: 10.13287/j.1001-9332.202004.009

南亚热带红锥大径材培育林幼苗更新及其与母树的空间关联性

徐浩成¹, 郑路^2,3, 王宏翔¹, 农友^2,3, 陈永康¹, 李萌¹, 蔡道雄^2,3, 尤业明^1,3*

¹广西大学林学院, 广西森林生态与保育重点实验室, 南宁 530004;
²中国林业科学研究院热带林业实验中心, 广西凭祥 532600;
³广西友谊关森林生态系统国家定位观测研究站, 广西凭祥 532600

收稿日期:2019-12-02 出版日期:2020-04-20 发布日期:2020-04-20
通讯作者: *E-mail: youyeming@163.com
作者简介:徐浩成, 女, 1995年生, 硕士研究生。主要从事森林生态学研究。E-mail: xuhaocheng95@163.com
基金资助:
国家自然科学基金项目(31560201,31960240)和广西自然科学基金项目(2017GXNSFAA198207,2018GXNSFAA294139,2019GXNSFAA185023)资助

Seedling regeneration and spatial correlation between seedlings and seed trees in Castanopsis hystrix plantation by large diameter wood cultivation in south subtropical China

XU Hao-cheng¹, ZHENG Lu^2,3, WANG Hong-xiang¹, NONG You^2,3, CHEN Yong-kang¹, LI Meng¹, CAI Dao-xiong^2,3, YOU Ye-ming^1,3*

¹Guangxi Key Laboratory of Forest Ecology and Conservation, College of Forestry, Guangxi University, Nanning 530004, China;
²Experiment Center of Tropical Forestry, Chinese Academy of Forestry Sciences, Pingxiang 532600, Guangxi, China;
³Guangxi Youyiguan Forest Ecosystem Research Station, Pingxiang 532600, Guangxi, China

Received:2019-12-02 Online:2020-04-20 Published:2020-04-20
Contact: *E-mail: youyeming@163.com
Supported by:
This work was supported by the National Natural Science Foundation of China (31560201, 31960240) and the Guangxi Natural Science Foundation (2017GXNSFAA198207, 2018GXNSFAA294139, 2019GXNSFAA185023).

摘要/Abstract

摘要： 以南亚热带大径材培育的红锥林为对象,采用空间点格局方法中的双相关函数g(r)进行统计分析,研究红锥幼苗的更新特征和空间分布格局及其与母树的空间关联性。结果表明: 红锥大径材培育林的林下幼苗天然更新良好,广泛分布于整个林地;更新方式以根萌为主,占全部幼苗的73.6%。不同龄级幼苗的数量分布呈金字塔型,径级Ⅰ、Ⅱ和Ⅲ分别占总幼苗数的64.3%、29.3%和6.4%。红锥幼苗主要在小尺度(<15 m)上呈聚集分布,但随着径级和空间尺度的增加,其聚集强度减弱,最终变为随机分布。幼苗与母树的空间关联性主要表现为随幼苗径级或空间尺度增大逐渐不明显。

关键词: 点格局分析, 大径材培育, 南亚热带, 幼苗更新, 红锥人工林

Abstract: Using the paired correlation equation g(r) in the spatial point patterns, we investigated the regeneration characteristics and spatial patterns of Castanopsis hystrix seedlings and the spatial correlation with the seed trees in the plantation by large diameter wood cultivation in south subtropical China. The results showed that natural seedling regeneration in C. hystrix plantation was good, which were widely distributed in the whole plantation. The seedling regeneration were mainly contributed by root sprouts, accounting for 73.6% of the total. The number distribution of C. hystrix seedlings in different age classes showed a pyramidal shape, with the contribution of diameter classⅠ, Ⅱ and Ⅲ being 64.3%, 29.3% and 6.4% of the total, respectively. The C. hystrix seedlings mainly presented aggregated distribution in small scale (<15 m). With the increases of size classes and spatial scales, the aggregation strength gradually weakened and finally presented random distribution. The spatial correlation between seedlings and seed trees was not significant with the increases of size classes or spatial scale.

Key words: young tree regeneration, south subtropical zone, large diameter wood cultivation, Castanopsis hystrix plantation, point pattern analysis

徐浩成, 郑路, 王宏翔, 农友, 陈永康, 李萌, 蔡道雄, 尤业明. 南亚热带红锥大径材培育林幼苗更新及其与母树的空间关联性[J]. 应用生态学报, 2020, 31(4): 1055-1062.

XU Hao-cheng, ZHENG Lu, WANG Hong-xiang, NONG You, CHEN Yong-kang, LI Meng, CAI Dao-xiong, YOU Ye-ming. Seedling regeneration and spatial correlation between seedlings and seed trees in Castanopsis hystrix plantation by large diameter wood cultivation in south subtropical China[J]. Chinese Journal of Applied Ecology, 2020, 31(4): 1055-1062.

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南亚热带红锥大径材培育林幼苗更新及其与母树的空间关联性

Seedling regeneration and spatial correlation between seedlings and seed trees in Castanopsis hystrix plantation by large diameter wood cultivation in south subtropical China

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