Environmental interpretation of forest communities in Xiaowutai Mountain by fuzzy mathematics analysis
 作者： Xiaohang Bai,  Jintun Zhang 作者单位： 1Key Laboratory of Biodiversity Sciences and Ecological Engineering, Ministry of Education, College of Life Sciences, Beijing Normal University, Beijing 100875, China2Key Laboratory of Forest Ecology and Management, Institute of Applied Ecology, Chinese Academy of Sciences, Shenyang 110016, China 刊名： Ecological Informatics, 2018, Vol.48 , pp.178-186 来源数据库： Elsevier Journal DOI： 10.1016/j.ecoinf.2018.09.006 关键词： Forest community structure;  Fuzzy C-means clustering;  Fuzzy set ordination;  Environmental gradient;  Community distribution; 英文摘要： Abstract(#br)Fuzzy mathematics theory has been recognized as an appropriate approach for dealing with fuzzy uncertainty that is mainly due to incomplete information in ecological problems. The forest communities in Xiaowutai Mountain were analyzed by fuzzy mathematics methods. The results showed that all quadrats ( n = 148) which contained a total of 392 vascular plant species in 75 families were classified into 16 groups representing 16 plant communities by fuzzy C-means clustering. The distribution of plant community types in two-dimensional ordination diagram reflected community space variation trends and environmental gradients by fuzzy set ordination. In addition, the ordination results reflected altitude, slope position, litter layer thickness, soil electrical conductivity, soil... thickness, soil temperature, soil moisture, disturbance, slope, aspect, soil pH successively affected community distribution along environmental gradients. From the two-dimensional ordination diagram, it seemed that altitude played the greatest impact on forest community distribution in all environmental factors. Analyzing the actual effect of plant community by fuzzy mathematics methods can help us to provide ideas and case studies in ecology research.

• clustering　聚类
• fuzzy　模糊的
• community　群落
• ordination　序列法
• interpretation　判读
• mathematics　数学
• means　手段
• analysis　分析
• forest　季雨林
• distribution　分布