摘要
针对目前国内风景林抚育间伐方法的局限性,将惠刚盈从国外引进并发展了的先进的林分空间结构理论用于风景林的空间结构分析,并结合风景林自身特点和功能需求,探讨出一种全新的风景林抚育间伐方法。最后,以北京市西山风景林为例做了实证分析,抚育间伐后标准地的结构参数发生如下变化:角尺度由0.53变为0.42,林木结构由聚集分布变为均匀分布;混交度由0.26变为0.28,混交程度有所提高;大小比由0.48变为0.42。结构单元中目标树的优势度有所提高。
Focus on the present limits on the intermediate felling methods of scenic forest, the paper adopts the overseas advanced theory of the stand spatial structure, which was introduced and developed by Hui Gangying, to apply to the spatial structure analysis of the scenic forest. A brand new intermediate felling method of scenic forest is explored combining with the scenic forest itself characteristics and functional demands. Taking scenic forest in Western Mountain of Beijing as a case study, the results confirm that the structural parameters of standard plots after intermediate felling have changed as followed： the uniform angle index changed from 0.53 to 0.42, the structure changed from gathered distribution to even distribution, the extent of mingled distribution increased from 0.26 to 0.28, the size ratio from 0.48 to 0.42. The dominance of target trees in structural unit has enhanced to certain extent.
出处
《林业调查规划》
2006年第6期6-11,共6页
Forest Inventory and Planning
基金
国家林业局2003年度重点科研项目(2003-018-L18)
北京市自然科学基金资助项目(6052012)
关键词
风景林
景观质量
抚育间伐
空间结构
scenic forest
quality of landscape
intermediate felling
spatial structure
