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林业资源管理 ›› 2013›› Issue (5): 137-141.

• 研究简报 • 上一篇    下一篇

天然次生林间伐强度的探讨——以国有青石冈林场木荷次生林为例

吕勇1, 谭杨新1, 吕飞舟1, 李新建2, 张江1   

  1. 1.中南林业科技大学,长沙 410004;
    2.中南林业调查规划设计院,长沙 410014
  • 收稿日期:2013-06-13 修回日期:2013-09-02 出版日期:2013-10-28 发布日期:2020-11-23
  • 作者简介:吕勇(1965-),男,湖北崇阳人,教授,博导,主要从事森林资源经营管理的教学和研究工作。Email:727065572@qq.com
  • 基金资助:
    国家林业局林业公益性行业科研专项项目“南方集体林区次生林抚育间伐与高效利用技术研究”(201004032);湖南省科技厅项目“南方集体林区典型次生林多效经营研究”(2012NK3110);湖南省教育厅项目“湖南典型次生阔叶林多功能经营研究”(13K069)

Research on Thinning Intensity of Natural Secondary Forest —A Case of Schima superba Secondary Forest of Qingshigang Forest Farm

LÜ Yong1, TAN Yangxin1, LÜ Feizhou1, LI Xinjian2, ZHANG Jiang1   

  1. 1. Central South University of Forestry and Technology,Changsha 410004,China;
    2. Central South Forest Inventory and Planning Institute,Changsha 410014, China
  • Received:2013-06-13 Revised:2013-09-02 Online:2013-10-28 Published:2020-11-23

摘要: 从林分空间结构指标参数出发,提出了以角尺度为主要调整目标的林分空间结构优化方案。结合林木间伐指数,确定间伐木,并进行间伐后林分空间结构的分析,最终确定间伐强度,结果表明:间伐后林分中林木的空间分布格局由团状分布调整为随机分布,林分平均角尺度ω=0.49,混交度得到提高,林木竞争指数和间伐指数均减小,大小比数基本保持不变,林分调整达到预期目标,林分结构得到优化,由此确定的间伐强度为26.2%。

关键词: 木荷次生林, 林分空间结构, 间伐指数, 模拟间伐

Abstract: On the basis of the forest stand spatial structure parameters,this takes uniform angle index as the main adjustment of the forest stand spatial structure optimization,and combined with intermediate cutting index,determine the trees for intermediate cuttings,and analyses forest stand spatial structure after intermediate cuttings,and finally determine the intensity of intermediate cutting.The results show that when thinning spacing distribution of trees changed from gathering distribution to random distribution,the average uniform angle index is 0.49. Mixed degree was improved,trees competition index and intermediate cutting index decrease,and neighborhood comparison remained about the same. The adjustment of forest stand reaches the expected aim and forest stand structure was optimized.Therefore,the determined thinning intensity is 26.2%.

Key words: secondary schima superba forest, stand spatial structure, intermediate cutting index, simulated thinning

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