| 兴安落叶松人工林空间结构优化 |
| |
| 引用本文： | 林富成,王维芳,门秀莉,孙钰森,李国春,刘丹丹. 兴安落叶松人工林空间结构优化[J]. 北京林业大学学报, 2021, 43(4): 68-76. DOI: 10.12171/j.1000-1522.20200228 |
| |
| 作者姓名： | 林富成 王维芳 门秀莉 孙钰森 李国春 刘丹丹 |
| |
| 作者单位： | 1.东北林业大学林学院，黑龙江 哈尔滨 150040 |
| |
| 基金项目： | "十三五"国家重点研发计划项目 |
| |
| 摘 要： | [目的]以小兴安岭林区兴安落叶松人工林为研究对象,基于林分空间结构参数和经营密度表确定采伐强度及采伐木,对林分空间结构进行优化,分析优化效果,为人工林空间结构优化提供理论依据.[方法]在黑龙江省伊春市南岔县设置4块面积为0.2 hm2的兴安落叶松人工林固定样地,选择常用林分空间结构参数角尺度、大小比数、竞争指数和开阔比...
|
| 关 键 词： | 人工林 林分空间结构 抚育间伐 空间结构评价指数 |
| 收稿时间： | 2020-07-22 |
Spatial structure optimal of Larix gmelinii plantation |
| |
| Lin Fucheng,Wang Weifang,Men Xiuli,Sun Yusen,Li Guochun,Liu Dandan. Spatial structure optimal of Larix gmelinii plantation[J]. Journal of Beijing Forestry University, 2021, 43(4): 68-76. DOI: 10.12171/j.1000-1522.20200228 |
| |
| Authors: | Lin Fucheng Wang Weifang Men Xiuli Sun Yusen Li Guochun Liu Dandan |
| |
| Affiliation: | 1.School of Forestry, Northeast Forestry University, Harbin 150040, Heilongjiang, China2.Natural Resources Rights Survey and Monitoring Institute of Heilongjiang Province, Harbin 150080, Heilongjiang, China3.School of Civil and Architecture Engineering, Panzhihua University, Panzhihua 617067, Sichuan, China |
| |
| Abstract: | [Objective]Taking the Larix gmelinii plantation in Xiaoxing’an Mountains of northeastern China as the research object,based on the spatial structure parameters and management density table of the stand,the cutting intensity and logging were determined,the spatial structure of stand was optimized,and the effects of optimization were analyzed to provide theoretical basis for the optimization of the spatial structure of the plantation.[Method]In Nancha County,Yichun City of Heilongjiang Province,four fixed sample plots of Larix gmelinii plantation with an area of 0.2 ha were set up.The angle scale,size ratio,competition index and opening ratio of the commonly used stand spatial structure parameters were selected,and the spatial structure evaluation index was constructed.The cutting intensity and cutting wood were determined by combining the management density table of Larix gmelinii,and the spatial structure changes before and after thinning were analyzed.[Result]The forest trees in the sample plot belong to the cluster distribution,random distribution and uniform distribution.There were many medium and small diameter trees,which were in a disadvantaged state.The growth space of the trees was in a serious and insufficient state,and the forest competition pressure was relatively high.The evaluation grades were all level 2.According to the management density table,the monitoring sample plot 2 and monitoring sample plot 4 were harvested.The harvesting plant number intensity was 20.7%and 12.7%,respectively.After harvesting,the angular scale decreased by 3.9%and increased by 3.8%,and the size ratio decreased by 0.5%and 0.4%,respectively.The competition index decreased by 16.8%and 5.2%,the openness ratio increased by 24.5%and 4.2%,and the spatial structure evaluation index increased by 27.8%and 7.2%,respectively.[Conclusion]Using stand spatial structure parameters combined with management density table for thinning can effectively improve stand spatial structure,improve the growth space and dominant degree of trees,and reduce the competitive pressure. |
| |
| Keywords: | plantation stand spatial structure tending and cutting spatial structure evaluation index |
| 本文献已被 CNKI 维普 万方数据 等数据库收录！ |
| 点击此处可从《北京林业大学学报》浏览原始摘要信息 |
|
点击此处可从《北京林业大学学报》下载全文 |
|
