摘要
边缘效应是生态学和生物保护的重要概念之一,在生态系统尺度和景观生态系统尺度下研究能量流动、水分循环和养分循环等生态过程具有重要作用。以赤松(Pinus densiflora)人工林为研究对象,分析56年生赤松各项生物因子(胸径、树高、第1活枝高、树冠、各器官生物量)与边距的关系。结果表明:56年生沙地赤松人工林的边缘效应带宽为10 m,胸径、树冠、各器官生物量表现为边缘正效应,树高、第1活枝高表现为边缘零效应。边距10 m以内的赤松的生物指标因子表现更佳,可通过间伐方式增强研究区林分边缘效应,提高赤松人工林生产力。
Edge effect is one of the important concepts of ecology and biological protection.It plays an important role in the study of ecological processes such as energy flow,water cycle and nutrient cycle at the ecosystem scale and landscape ecosystem scale.Taking Pinus densiflora plantation as the research object,the relationship between biological factors(DBH,tree height,height of the first living branch,crown,biomass of each organ)and edge distance of 56-year-old Pinus densiflora was analyzed.The results showed that the edge effect bandwidth of 56-year-old Pinus densiflora plantation in sandy land was 10 m.The DBH,crown and biomass of each organ showed positive edge effect,while the tree height and the height of the first living branch showed zero edge effect.The biological index factors of Pinus densiflora within 10 m were better,and the edge effect of the stand in the study area could be enhanced by thinning to improve the productivity of Pinus densiflora plantation.
作者
赵亮
Zhao Liang(Management Center of Liaoning Zhanggutai National Nature Reserve,Fuxin 123000,China)
出处
《防护林科技》
2025年第5期50-52,55,共4页
Protection Forest Science and Technology
关键词
赤松
沙地
树冠
边缘效应
生物因子
Pinus densiflora
sandy land
tree crown
edge effect
biological factors
