| 萌生杉木林经营前后杉木的空间分布格局及关联性 |
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| 作者姓名： | 陈杏林 林露花 何必庭 金霖芳 潘雅妮 元妙华 |
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| 作者单位： | 龙泉市林业科学研究院;龙泉市林业局;龙泉市自然资源和规划局 |
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| 基金项目： | 浙江省林业厅林业发展和资源保护专项“彩色健康森林、木材战略储备林省级示范林和中央财政森林抚育补贴项目”;龙泉市科技计划项目“杉木次生林森林经营示范与推广”(KN-17)。 |
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| 摘 要： | 目的]探索杉木萌生林的科学经营方法。方法]以萌生杉木林为研究对象,采用双相关g(r)函数对经营前后杉木萌生林林分中杉木的空间格局及不同径级的关联性进行分析。结果]萌生杉木林中的杉木种群经营前后在整体上和不同径级间,均表现为在3~10 m的尺度上为随机分布,在0~3 m的尺度上主要呈聚集分布或者均匀分布。经营前后杉木不同径级林木的空间关联表明,除径级Ⅱ和径级Ⅲ的杉木在0~1 m的尺度上表现为正相关,在1~2 m表现为弱的负相关外,其余各个径级间的空间关联均为相互独立。结论]在对杉木萌生林的经营中应该参照当地天然林的分布格局和树种配置等特征,通过人工促进更新、栽植位置、密度控制、树种配置等森林经营措施,加速现有次生林的进展演替,逐步使林分朝着天然林经营的方式发展,最终实现林分的可持续经营。
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| 关 键 词： | 杉木萌生林 抚育经营 空间格局 空间关联性 |
Spatial Distribution Pattern and Correlation of Cunninghamia lanceolata before and after Management |
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| Institution: | (Longquan Academy of Forestry Sciences,Longquan,Zhejiang 323700) |
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| Abstract: | Objective]The aim of this study was to explore the scientific management method of Chinese fir sprouting forest.Method]Taking the sprouting Chinese fir forest as the research object,the spatial pattern of Cunninghamia lanceolata stand before and after management and the correlation of different diameter classes were analyzed by using double correlation g(r)function.Result]Before and after management,the population of Cunninghamia lanceolata in the sprouting Chinese fir forest showed random distribution in the scale of 3-10 m,and mainly aggregated distribution or uniform distribution in the scale of 0-3 m.The spatial association of Chinese fir trees with different diameter classes before and after management showed that the spatial correlation among the other diameter classes was independent,except for the Chinese fir with diameter class II and III showing positive correlation at the scale of 0-1 m and weak negative correlation at the scale of 1-2 m.Conclusion]The management of Cunninghamia lanceolata sprouting forest should refer to the distribution pattern and tree species configuration of local natural forest,and accelerate the progress and succession of existing secondary forest by artificial promotion of regeneration,planting location,density control,tree species allocation and other forest management measures,so as to gradually make the stand develop towards the natural forest management mode,and finally realize the sustainable management of the forest stand. |
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| Keywords: | Chinese fir sprouting forest Tending management Spatial pattern Spatial correlation |
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