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苏州近郊4种不同森林群落稳定性研究
肖文娅,周琦,董务闯,关庆伟
0
(南京林业大学生物与环境学院,南京 210037;南京林业大学生物与环境学院,南京 210037; 吴中区农业局,苏州 215000)
摘要:
稳定性是一个评价群落结构与功能的指标,一直是生态学研究的热点。本文依据林分地上部分指标建立稳定体系,对苏州近郊4种人工林分,应用数学生态学方法,分析冬青针阔混交林、栎树针阔叶混交林、湿地松林和木荷林的林分稳定性。结果表明,多样性并不完全能够代表稳定性;4种林分群落稳定性主要因林分密度不同而异;稳定性依次为湿地松林>冬青湿地松林>栎树湿地松林>木荷林。其中湿地松林可能会发展成为针阔混交林;木荷林中在生长过程中会因竞争产生限制,可能演替形成栎树—木荷混交林;2种针阔混交林在未来演替也可能向落叶阔叶、常绿阔叶混交林发展;该地区木荷林密度过大,稳定性较弱,应采取适当的抚育措施,提高其林分稳定性。
关键词:  冬青湿地松混交林  栎树湿地松混交林  湿地松林  木荷林  稳定性指数
DOI:10.13610/j.cnki.1672-352x.20141029.025
基金项目:国家林业公益性行业科研专项“提高城市森林固碳能力的关键技术研究与示范”(201104075)和江苏高校优势学科建设工程项目共同资助。
Stability analysis of four different forest communities in suburbs of Suzhou
XIAO Wenya,ZHOU Qi,DONG Wuchuang,GUAN Qingwei
(College of Biology and Environment, Nanjing Forestry University, Nanjing 210037;College of Biology and Environment, Nanjing Forestry University, Nanjing 210037; Wuzhong District Bureau of Agriculture, Suzhou 215000)
Abstract:
Stability is an indicator of forest community structure and function and has been a focus of ecological research. Four typical forest communities (Ilex purpurea and Pinus elliottii mixed forest, Quercus and P. elliottii mixed forest, P. elliottii forest, and Schima superba forest) in Jiangsu Province, East China were used. Fourteen factors were chosen as the parameters to build an evaluation model that aimed to evaluate the stability of the four selected communities using the mathematical ecology method. The results showed that the diversity could not fully represent the stability. Forest density variety mainly causes the differences in stability among the forest communities. Stability of P. elliottii forest > I. purpurea and P. elliottii mixed forest > Q. and P. elliottii mixed forest > S. superba forest. P. elliottii forest may become conifer-broadleaved mixed forest. S. superba forest may become Q. and S. superb mixed forest due to the limited growing space. Two types of conifer-broadleaved mixed forest may be developing to the deciduous broad-leaved or evergreen broad-leaved mixed forest in the future. The density of S.superba forest was too greater to be etable; thus, appropriate efforts should be made to enhance the stability in forest communities.
Key words:  Ilex purpurea and Pinus elliottii mixed forest   Quercus and P. elliottii mixed forest   P. elliottii forest  Schima superba forest  stability index

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