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4种地被竹大个体空间分布的点格局分析(PDF)

《南京林业大学学报(自然科学版)》[ISSN:1000-2006/CN:32-1161/S]

Issue:
2018年04期
Page:
39-45
Column:
专题报道(Ⅱ)
publishdate:
2018-07-12

Article Info:/Info

Title:
Point pattern analysis on the distributions of large individuals of four dwarf bamboos
Article ID:
1000-2006(2018)04-0039-07
Author(s):
QIN Peng13 GU Qi12 WANG Shucong1 CAO Junjie1 WANG Fusheng1 SHI Peijian1*
1. Co-Innovation Center for the Sustainable Forestry in Southern China, Bamboo Research Institute, Nanjing Forestry University, Nanjing 210037, China; 2. Nanjing Institute of Environmental Sciences, Ministry of Environmental Protection, Nanjing 210042, China; 3. Danyang City Environmental Monitoring Station of Jiangsu Province, Danyang 212300, China
Keywords:
Keywords:dwarf bamboo individual spatial structure height of bamboo plant cases-controls random distribution Monte-Carlo test spatial distribution
Classification number :
S718.5; S795
DOI:
10.3969/j.issn.1000-2006.201711055
Document Code:
A
Abstract:
Abstract: 【Objective】There exists a large difference in body size among individuals of the same plant species, which is an important factor for affecting the spatial structure of plant populations. In this study, we aimed to explore the types of spatial distributions of large individuals in population, examining the interaction between large and small individuals, and to provide basic information for city verdurization.【Method】Four species of dwarf bamboos were chosen from the campus of Nanjing Forestry University, namely Pleioblastus pygmaeus, Indocalamus barbatus, P. fortunei and P. argenteostriataus. We divided dwarf bamboo into two groups: large individuals(cases)and small individuals(controls), then used the second-order analysis of spatial clustering combined with the Monte-Carlo test, to analyze the spatial distribution types and calculated the intensity surfaces.【Result】The results showed that: ① The P. pygmaeus, I. barbatus and P. argenteostriataus exhibited random Poisson distribution on given distance scales and no clustering characteristics. ② The P. fortunei also exhibited a random distribution, but it is slightly weaker than the other three species; ③ The four studied dwarf bamboo species had different intensity surfaces in their corresponding study regions.【Conclusion】Difference in the body size among the dwarf bamboos can affect the dynamics of intraspecific resource(especially in space)competition. It also indicated that spatial distribution pattern of large individuals reflects the external performance of the comprehensive capacity of dwarf bamboo populations in habitats. In the natural environment, based on the individual difference in size, dwarf bamboos populations forms special spatial structures through its own regulation mechanism and a series of ecological processes.

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Last Update: 2018-07-27