文献类型：期刊文献

中文题名：细叶云南松群落物种多样性与种群空间分布格局

英文题名：Species diversity and spatial distribution pattern of Pinus yunnanensis var. Tenuifolia communities in northwest Guangxi

作者：庞圣江[1] 张培[1] 贾宏炎[1] 杨保国[1] 刘仕玲[1] 冯昌林[1]

第一作者：庞圣江

机构：[1]中国林业科学研究院热带林业实验中心

年份：2015

卷号：46

期号：4

起止页码：645-651

中文期刊名：南方农业学报

外文期刊名：Journal of Southern Agriculture

收录：CSTPCD;;北大核心:【北大核心2014】；CSCD:【CSCD_E2015_2016】；

基金：国家科技部社会公益研究专项项目(2005DIB6J144)

语种：中文

中文关键词：细叶云南松;物种多样性;种群分布;空间格局;桂西北

外文关键词：Pinus yunnanensis vat. Tenuifolia; species diversity; population distribntion; spatial pattern; northwest of Guangxi

分类号：S714.5

摘要：【目的】探讨广西雅长林场细叶云南松针阔混交林植物多样性及其空间分布格局,为桂西北细叶云南松林管理保护、可持续开发利用及干热河谷地区植被恢复和生态重建提供参考依据。【方法】在野外调查的基础上,通过重要值、Shannon-Wiener指数(H′)、均匀度指数(E)和Simpson指数(D)等指标,分析细叶云南松林植物多样性;采用扩散系数(Di)、聚集指数(Ci)、平均拥挤度(m*)、Green指数(Gi)、聚块性指数(Pai)和聚集强度(Pi)等指标,分析主要树种的空间分布格局。【结果】桂西北细叶云南松林的植物多样性格局表现为:灌木层>草本层>乔木层;种群空间分布分析结果表明,22个优势种服从聚集分布,少数种群呈随机分布或均匀分布。【结论】广西雅长林场细叶云南松针阔混交林植物种类比较丰富,林内环境荫蔽,不利于幼苗天然更新及幼树生长,适当进行人工抚育可促进群落的稳定性。
[Objective ]Species diversity and spatial distribution pattern of Pinus yunnanensis var. Tenuifolia communities in Yachang forest farm were discussed to provide references for the management, sustainable development and utilization of Pinus yunnanensis vat. Tenuifolia and the vegetation restoration and ecological reconstruction in dry-hot valley areas. [ Method ]On the basis of field investigation, Pinus yunnanensis var. Tenuifolia forest plant diversity was studied using important values and Shannon-Wiener index （H＇）,evenness index（E） and Simpson index （D） measurements The main spatial distribution pattern of the species was analyzed using the diffusion coefficient （D i）,aggregation index （Ci）, average crowded degree （m＊）,Green index （Gi）,block sex index （Pa/） and aggregation intensity （Pi）,and other indicators. [Result]The plant diversity of Pinus yunnanensis vat. Tenuifolia forest was shown as： shrub layer 〉 herb layer 〉 tree layer. Population spatial distribution analysis showed that 22 dominant species were aggregated distribution and a few species showed random distribution or uniform distribution. [Conclusion lThere are abundant plant species and forest shade environment in Yachang forest farm of Guangxi, which does not favor the sapling seedling natural regeneration and growth of young trees. Suitable artificial incubation can promote the stability of the community.