摘要
近自然毛竹纯林是浙江省天目山国家级自然保护区内特殊的植被类型,研究近自然毛竹纯林的空间分布格局,不仅可以揭示近自然毛竹纯林的生态学意义,而且也可以为人工经营毛竹林的管理提供科学依据。在浙江省天目山国家级自然保护区内,选择近自然毛竹纯林设置样地,样地大小100 m×100 m,用全站仪测定每株毛竹坐标(x,y,z)。首先对自然状态毛竹进行分类,再运用方差/均值比(t检验)、丛生指数、Cassie指数、聚块性指数、Moristia指数5种格局研究方法,对不同状态毛竹的分布格局进行分析。结果表明:近自然毛竹纯林中,活竹占绝对优势,且多呈弯曲状态。而死竹以受损居多。折断和倒伏是活竹和死竹受损的主要原因。近自然毛竹纯林的活立竹、枯死竹和整个林分的分布格局均为聚集分布。
The nature-approaching Moso bamboo pure forest is a special vegetation type in National Nature Reserve of Tianmu Mountain,Zhejiang Province.The study of nature-approaching Moso bamboo pure forest can not only reveal its ecological significance,but also provide a scientific basis for plantation management.A typical plot of 100 m×100 m was surveyed in the reserve.Each Moso bamboo was located in terms of x-,y-,and z-coordinates using a Total Station.First,nature-approaching Moso bamboo was classified based on different states and calculated the proportion of each type.Then spatial patterns of different Moso bamboo type were analyzed using variance/mean（t-test）,clumping index,Cassie＇s index,mean crowing index and Moristia＇s index.The results showed that in nature-approaching Moso bamboo pure forest,living bamboos were dominant and curving,but dead bamboos were mainly damaged.Broken and lodging were main reasons caused damage of living and dead bamboo.The spatial patterns of living Moso bamboo,dead Moso bamboo and whole Moso bamboo stand were aggregated.
出处
《竹子研究汇刊》
北大核心
2011年第1期11-15,22,共6页
Journal of Bamboo Research
基金
国家自然科学基金资助项目(30871963)
浙江省自然科学基金资助项目(Y3080261)
浙江省科技厅资助项目(2009C32063)
关键词
近自然毛竹纯林
分类
分布格局
聚集分布
Nature-approaching Moso bamboo pure forest
Classification
Spatial pattern
Aggregated distribution
