浙江农林大学学报2018，Vol.35Issue(2)：199-208,10.DOI:10.11833/j.issn.2095-0756.2018.02.002
天目山毛竹竞争空间格局的动态分析
Competitive spatial patterns for Moso bamboo on Mount Tianmu
摘要
Abstract
Moso bamboo(Phyllostachys edulis)stands, one of the most economic forest-types in China, possess many advantages over other types, such as rapid growth, wide distribution, and high production. Much research on competition of Moso bamboo, such as intraspecific and interspecific competition, the relationship between biomass and competition, and improvements of competition index, has been conducted, but this study focused on spatial variability and its dynamic analysis of bamboo competition in distance scale dependence, which has been neglected. Based on data collected from 2009-2015 in the Moso bamboo stand of Tianmu Mountain Na-tional Nature Reserve of Zhejiang Province, the Hegyi Competition Index(CI)was calculated based on Geo-graphic Information System(GIS). Spatial semivariogram was used to analyze the auto-correlation range of CI and its anisotropy. Also Moran's I and Empirical Bayesian Kriging (EBK)were used to describe dynamic changes in the competitive spatial pattern.Results showed that spatial distribution of CI for Moso bamboo had a significant general global autocorrelation (P<0.001). Bamboos of the same competitive intensity were dis-tributed evenly. Also, Moso bamboo stands had strong spatial variation due to their structural features. The CI spatial pattern, influenced by micro topography, existing anisotropy, and an extreme climate, reduced spatial heterogeneity and was inclined to be isotropic.The competition range appeared inverse to change in the on-year and off-year growth cycles with the average range being 4.306 m. This range could be used as the distance scale for the basis of determining competition unit radius and for control of the Moso bamboo competitive rela-tionship. Even though Moso bamboo competition increased from off-years to on-years, its competition lessened from on-years to off-years. These research results could provide a reference for adjusting and controlling the competitive relationships in Moso bamboo stand management.关键词
森林生态学/毛竹/竞争指数/空间异质性/空间自相关Key words
forest ecology/Moso bamboo(Phyllostachys edulis)/competition index/spatial heterogeneity/spa-tial autocorrelation分类
农业科技引用本文复制引用
唐思嘉,汤孟平,赵赛赛,杜秀芳,沈钱勇,庞春梅..天目山毛竹竞争空间格局的动态分析[J].浙江农林大学学报,2018,35(2):199-208,10.基金项目
国家林业局林业公益性行业科研专项(201504303) （201504303）
国家自然科学基金资助项目(31170595) （31170595）
"十二五"国家科技支撑计划项目(2012BAD22B0503) （2012BAD22B0503）
浙江省林学一级重中之重学科学生创新计划项目(201514) （201514）
