| 浙江省天然针阔混交林非空间结构分布特征与生产力相关性 |
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| 引用本文： | 郭建辉,韦新良,朱锦迪,杨晶晶,张继艳.浙江省天然针阔混交林非空间结构分布特征与生产力相关性[J].浙江农林大学学报,2021,38(4):682-691. |
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| 作者姓名： | 郭建辉 韦新良 朱锦迪 杨晶晶 张继艳 |
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| 作者单位： | 1.浙江农林大学 环境与资源学院，浙江 杭州 3113002.浙江农林大学 省部共建亚热带森林培育国家重点实验室，浙江 杭州 311300 |
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| 基金项目： | 国家林业公益性行业科研专项(20150430303) |
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| 摘 要： | 目的 研究浙江省针阔混交林非空间结构分布特征与生产力的相关性，为提升浙江省针阔混交林经营水平和森林质量提供理论依据和技术支持。 方法 以1999、2004、2009年共3期森林资源连续清查数据中的天然针阔混交林样地和样木数据为研究材料，提取胸径、树高、材积和针叶树种的非空间结构因子与单位面积蓄积量，对各时期的非空间结构分布形态进行函数建模，探究变化特征。采用生物量换算因子连续函数法进行生物量和生产力的估算，再进行非空间结构与生产力的偏相关分析。 结果 各时期森林非空间结构因子在形态上存在规律性的分布特征。非空间结构因子与生产力间呈正相关趋势。1999?2009年，浙江省针阔混交林针叶树种比例逐期上升，生产力第1期(1.39 t·hm?2·a?1)高于第2期(1.15 t·hm?2·a?1)。胸径、树高、单株材积均值呈近似正态分布。 结论 在针阔混交林的经营管理中，为保证林分处于高生产力的状态，要优先考虑针阔混交的比例。针叶树种比例应维持在50%以上，针叶树种比例偏低的混交林要进行人为干预。胸径若低于10.00 cm要加强抚育，高于12.00 cm应及时进行采伐。单株材积均值应维持在0.040~0.070 m3·株?1，树高在7.00~10.00 m。图6表5参34
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| 关 键 词： | 森林测计学 针阔混交林 非空间结构 生产力 |
| 收稿时间： | 2020-07-06 |
Correlation between non-spatial structure distribution characteristics and productivity of natural coniferous and broad-leaved mixed forests in Zhejiang |
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| GUO Jianhui,WEI Xinliang,ZHU Jindi,YANG Jingjing,ZHANG Jiyan.Correlation between non-spatial structure distribution characteristics and productivity of natural coniferous and broad-leaved mixed forests in Zhejiang[J].Journal of Zhejiang A&F University,2021,38(4):682-691. |
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| Authors: | GUO Jianhui WEI Xinliang ZHU Jindi YANG Jingjing ZHANG Jiyan |
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| Affiliation: | 1.College of Environment & Resources, Zhejiang A&F University, Hangzhou 311300, Zhejiang, China2.State Key Laboratory of Subtropical Silviculture, Zhejiang A&F University, Hangzhou 311300, Zhejiang, China |
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| Abstract: | Objective The objective of this study is to explore the distribution characteristics of non-spatial structure and the correlation between non-spatial structure and productivity of coniferous and broad-leaved mixed forests in Zhejiang Province, so as to provide theoretical basis and technical support for improving forest quality. Method Based on the data of natural coniferous and broad-leaved mixed forest sample plots and sample wood from the consecutive forest resource inventory in 1999, 2004, and 2009, the diameter at breast height(DBH), tree height, volume, and non-spatial structure factors and accumulation per unit area of conifer species were extracted. Patterns of non-spatial structure distribution in each period was modeled to explore characteristics of change. The continuous function method of biomass conversion factor was used to estimate biomass and productivity, and then the partial correlation analysis between non-spatial structure and productivity was performed. Result There existed regular distribution characteristics of forest non-spatial structure factors in different periods. The non-spatial structure factors and productivity showed a positive correlation. From 1999 to 2009, the proportion of coniferous species in the coniferous and broad-leaved mixed forest in Zhejiang Province increased gradually, and the productivity in the first period (1.39 t·hm?2·a?1) was higher than that in the second period (1.15 t·hm?2·a?1). The mean value of DBH, tree height and volume per plant were approximately normal. Conclusion In the management of coniferous and broad-leaved mixed forests, priority should be given to the proportion of coniferous and broad-leaved mixed forest in order to maintain the high productivity of the forest stand. The proportion of species should be kept above 50% and the mixed forests with a low proportion of coniferous species should be artificially intervened. If DBH is lower than 10.00 cm, tending should be strengthened, and if DBH is higher than 12.00 cm, cutting should be carried out in time. The average volume and tree height of per plant should be maintained at 0.040?0.070 m3·plant?1 and 7.00?10.00 m respectively. Ch, 6 fig. 5 tab. 34 ref.] |
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