四川江安县人工经营毛竹林分结构特征

赵鹏; 姜方海; 赵晓云

doi:10.16779/j.cnki.1003-5508.2013.05.001

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四川江安县人工经营毛竹林分结构特征

赵鹏 , 姜方海 , 赵晓云

文章导航 > 四川林业科技 > 2013 > 34(5): 1-7

赵鹏, 姜方海, 赵晓云. 四川江安县人工经营毛竹林分结构特征[J]. 四川林业科技, 2013, 34(5): 1-7. doi: 10.16779/j.cnki.1003-5508.2013.05.001

引用本文:

赵鹏, 姜方海, 赵晓云. 四川江安县人工经营毛竹林分结构特征[J]. 四川林业科技, 2013, 34(5): 1-7. doi: 10.16779/j.cnki.1003-5508.2013.05.001

ZHAO Peng, JIANG Fang-hai, ZHAO Xiao-yun. Structure Characteristics of Artificially-managed Phyllostachys heterocycla var. pubescens Stands in Jiangan County of Sichuan,China[J]. Journal of Sichuan Forestry Science and Technology, 2013, 34(5): 1-7. doi: 10.16779/j.cnki.1003-5508.2013.05.001

Citation:

ZHAO Peng, JIANG Fang-hai, ZHAO Xiao-yun. Structure Characteristics of Artificially-managed Phyllostachys heterocycla var. pubescens Stands in Jiangan County of Sichuan,China[J]. Journal of Sichuan Forestry Science and Technology, 2013, 34(5): 1-7. doi: 10.16779/j.cnki.1003-5508.2013.05.001

四川江安县人工经营毛竹林分结构特征

doi: 10.16779/j.cnki.1003-5508.2013.05.001

详细信息

四川省江安县林业局，四川江安 644200;四川农业大学旅游学院，四川都江堰 611830

作者简介:
赵鹏(1970-),男,四川省江安县人,工程师,主要从事森林资源经营与管理工作;E-mail:122283748@qq.com

基金项目:
四川省林业产业示范基地项目:毛竹材用林丰产栽培经营技术推广与示范(2010-2130206)
中图分类号: S795

Structure Characteristics of Artificially-managed Phyllostachys heterocycla var. pubescens Stands in Jiangan County of Sichuan,China

More Information

Forestry Bureau of Jiangan County in Sichuan, Jiangan 644200, Sichuan, China;College of Tourism, Sichuan Agricultural University, Dujiangyan 611830, Sichuan, China

摘要: 通过对江安县毛竹人工林的典型样地调查,利用Weibull分布函数对其年龄、胸径和枝下高的密度分布进行了模拟。结果表明:(1)毛竹人工林株数分布较均匀,且结构较合理,1度竹达598株·hm^-2,占林地总株数的16.5%;(2)毛竹人工林分的年龄分布符合三参数Weibull分布函数,其所有样地拟合的可决系数R²达0.99812,各年龄组误差均在3%以内;(3)毛竹人工林分胸径和枝下高分布符合二参数Weibull分布函数,其全部样地拟合的可决系数R²分别为0.99951和0.99819;由于人工干扰的原因,其胸径分布的前4个径阶组和枝下高分布的前3个高阶组的拟合误差较大,最大值分别为31.69%和-30.02%,而其余各组的拟合误差则多在3%以下;(4)毛竹人工林的胸径-年龄和枝下高-年龄具有相似的结构特征,即,成熟龄组的胸径分布呈正态分布,对应的竹高分布则呈现左截尾的非完整的正态分布,而其余龄组则无明显分布特征,这与人为经营活动及其水平是相关的。
- 江安县;
- 结构特征;
- 枝下高;
- 胸径;
- 毛竹人工林;
- Weibull分布函数
Abstract: Through the typical sample-plot survey of artificial Phyllostachys heterocycla var. pubescens stands in Jiangan County, the density distributions of their Age, DBH and HUC were simulated by using the Weibull distribution function. The results showed that (1) the bamboo number distribution of the stands was uniform, and the structure was quite reasonable. The number of bamboos at the first year was 598 individuals per hectare,which accounted for 16.5% of the total bamboos; (2) The age distribution of the stands complied with three-parameter Weibull distribution function,the fitting determination coefficient of all the plots was R²=0.99812, the error of each age group was within 3%; (3) The DBH and HUC distributions of the stands complied with two-parameter Weibull distribution function, the entire plot fitting determination coefficients were R²=0.99951 and 0.99819 respectively. Because of disturbances by artificially managed activities, the fitting errors found in the first four groups of the DBH distribution and the first three groups of the HUC distribution were larger,and the maximum values were 31.69% and-30.02% respectively, and the fitting errors in the rest groups were less than 3%; (4) The age-DBH and age-HUC distribution of the stands had similar structural characteristics, namely, DBH distribution of mature age groups was a normal distribution,and HUC distribution showed a non-complete normal distribution which was left-truncated, while the distribution of rest age groups didn't show obvious distribution characteristics, which was related to the artificial managed activities and their level.
- Jiangan County;
- Structure characteristic;
- HUC (Height Under Crown);
- DBH;
- Phyllostachys heterocycla var.pubescens stands;
- Weibull function

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四川江安县人工经营毛竹林分结构特征

doi: 10.16779/j.cnki.1003-5508.2013.05.001

四川省江安县林业局，四川江安 644200;四川农业大学旅游学院，四川都江堰 611830

作者简介:
赵鹏(1970-),男,四川省江安县人,工程师,主要从事森林资源经营与管理工作;E-mail:122283748@qq.com

收稿日期: 2013-06-19

基金项目:

四川省林业产业示范基地项目:毛竹材用林丰产栽培经营技术推广与示范(2010-2130206)

中图分类号: S795

关键词:

摘要: 通过对江安县毛竹人工林的典型样地调查,利用Weibull分布函数对其年龄、胸径和枝下高的密度分布进行了模拟。结果表明:(1)毛竹人工林株数分布较均匀,且结构较合理,1度竹达598株·hm^-2,占林地总株数的16.5%;(2)毛竹人工林分的年龄分布符合三参数Weibull分布函数,其所有样地拟合的可决系数R²达0.99812,各年龄组误差均在3%以内;(3)毛竹人工林分胸径和枝下高分布符合二参数Weibull分布函数,其全部样地拟合的可决系数R²分别为0.99951和0.99819;由于人工干扰的原因,其胸径分布的前4个径阶组和枝下高分布的前3个高阶组的拟合误差较大,最大值分别为31.69%和-30.02%,而其余各组的拟合误差则多在3%以下;(4)毛竹人工林的胸径-年龄和枝下高-年龄具有相似的结构特征,即,成熟龄组的胸径分布呈正态分布,对应的竹高分布则呈现左截尾的非完整的正态分布,而其余龄组则无明显分布特征,这与人为经营活动及其水平是相关的。

English Abstract

Structure Characteristics of Artificially-managed Phyllostachys heterocycla var. pubescens Stands in Jiangan County of Sichuan,China

Forestry Bureau of Jiangan County in Sichuan, Jiangan 644200, Sichuan, China;College of Tourism, Sichuan Agricultural University, Dujiangyan 611830, Sichuan, China

Received Date: 2013-06-19

Keywords:

Jiangan County /
Structure characteristic /
HUC (Height Under Crown) /
DBH /
Phyllostachys heterocycla var.pubescens stands /
Weibull function

Abstract: Through the typical sample-plot survey of artificial Phyllostachys heterocycla var. pubescens stands in Jiangan County, the density distributions of their Age, DBH and HUC were simulated by using the Weibull distribution function. The results showed that (1) the bamboo number distribution of the stands was uniform, and the structure was quite reasonable. The number of bamboos at the first year was 598 individuals per hectare,which accounted for 16.5% of the total bamboos; (2) The age distribution of the stands complied with three-parameter Weibull distribution function,the fitting determination coefficient of all the plots was R²=0.99812, the error of each age group was within 3%; (3) The DBH and HUC distributions of the stands complied with two-parameter Weibull distribution function, the entire plot fitting determination coefficients were R²=0.99951 and 0.99819 respectively. Because of disturbances by artificially managed activities, the fitting errors found in the first four groups of the DBH distribution and the first three groups of the HUC distribution were larger,and the maximum values were 31.69% and-30.02% respectively, and the fitting errors in the rest groups were less than 3%; (4) The age-DBH and age-HUC distribution of the stands had similar structural characteristics, namely, DBH distribution of mature age groups was a normal distribution,and HUC distribution showed a non-complete normal distribution which was left-truncated, while the distribution of rest age groups didn't show obvious distribution characteristics, which was related to the artificial managed activities and their level.