世界竹藤通讯2023，Vol.21Issue(6)：22-30,9.DOI:10.12168/sjzttx.2023.07.08.001
黔北大娄山区金佛山方竹林结构及其与竹笋产量的关系
Structure of Chimonobambusa uitils Forest Stands in Daloushan Mountain Area,Northern Guizhou Province,and Its Relationship with Bamboo Shoot Yield
摘要
Abstract
The relationship between Chimonobambusa uitils stand structure and the yield of bamboo shoots attracts the attention from academic community.Five experimental sites where natural forest and artificial forest of Ch.uitils are located are selected at an altitude about 1 600 m in the main distribution area of the species in Daloushan mountain,northern Guizhou province,to observe the dynamic changes of the yield of shelled and off-shelled bamboo shoots,the number of bamboo shoots picked and the edible rate of shoots.The results show as follows:1)The 21 sample plots are divided into 5 stand types according to the main habitat factors and the main indexes related to stand structure.With the decrease of altitude,the proportion of artificial forest plots increases,the thickness of soil layer decreases,and the number of plots and slope gradient show a trend of"first rising and then decreasing";2)Except for bamboo density and the height and Simpson index of trees,which are not insignificantly different,other indexes related to stand structure and plant diversity are significantly different.Among different types of bamboo forests,the intensively managed bamboo plantations have higher average DBH and density,while arbor trees have small average DBH,height and density,and shrub and herbaceous layers are not developed;3)Among different types of bamboo forests,except for total porosity of soil layer A,total phosphorus content of soil layer B,available phosphorus content,capillary porosity,and total porosity,which are significantly different,there is no significant difference in other soil physical and chemical indicators.There are certain differences in the total soil fertility,effective amount,and porosity between intensively managed bamboo plantation and another types of bamboo forests;and 4)There is no significant difference in the yield of bamboo shoots with shell,the number of harvested bamboo shoots,and the edible rate of shoot among different types of bamboo forests,while the yield of bamboo shoots without shell varies significantly among some types.For the intensively managed bamboo plantation in all types of bamboo forests,the yield of bamboo shoots with shell,the yield of bamboo shoots without shell and the number of harvested bamboo shoots are relatively low,and the edible rate of shoot are relatively low.The results provide a scientific basis for the study of the relationship between structure and bamboo shoot production in Ch.uitils forest at the low altitude.关键词
金佛山方竹/林分类型/林分结构/竹笋产量/黔北地区Key words
Chimonobambusa uitils/stand types/stand structure/bamboo shoot yield/northern Guizhou province引用本文复制引用
张喜,杨光能,侯贻菊..黔北大娄山区金佛山方竹林结构及其与竹笋产量的关系[J].世界竹藤通讯,2023,21(6):22-30,9.基金项目
贵州省特色林业产业科研项目(特林研2020-02). （特林研2020-02）
