[1]周远博,卜元坤,陈佳琦,等. 黄龙山油松林水平空间结构分析[J].西北林学院学报,2020,35(1):45-53.[doi:10.3969/j.issn.1001-7461.2020.01.07]
 ZHOU Yuan-bo,BU Yuan-kun,CHEN Jia-qi,et al. Horizontal Spatial Structures of Pinus tabuliformis Forests in Huanglong Mountain[J].JOURNAL OF NORTHWEST FORESTRY UNIVERSITY,2020,35(1):45-53.[doi:10.3969/j.issn.1001-7461.2020.01.07]
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 黄龙山油松林水平空间结构分析()
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《西北林学院学报》[ISSN:1001-7461/CN:61-1202/S]

卷:
第35卷
期数:
2020年第1期
页码:
45-53
栏目:
出版日期:
2020-01-31

文章信息/Info

Title:
 Horizontal Spatial Structures of Pinus tabuliformis Forests in Huanglong Mountain
文章编号:
1001-7461(2020)01-0045-09
作者:
 周远博卜元坤陈佳琦杨瑞赵鹏祥*
 (西北农林科技大学 林学院,陕西 杨陵 712100)
Author(s):
 ZHOU Yuan-boBU Yuan-kunCHEN Jia-qiYANG RuiZHAO Peng-xiang*
 (College of Forestry,Northwest A&F University,Yangling 712100,Shaanxi,China)
关键词:
 油松天然林和人工林空间结构林木角尺度林木胸径大小比林木混交度林木密集度
Keywords:
 natural and planted Pinus tabuliformis spatial structure uniform angle index mingling dominance crowding
分类号:
S791.254
DOI:
10.3969/j.issn.1001-7461.2020.01.07
文献标志码:
A
摘要:
 通过对比各类油松林分类型水平空间结构指数的差异,为应用结构指数调控林分抚育提供依据。以黄龙山林区的57块油松林固定样地为研究对象,基于角尺度(W)、胸径大小比(U)、混交度(M)和密集度(C)探讨油松天然林和人工林空间、不同坡向油松林的空间结构和不同林龄油松林空间结构的差异。结果表明,在角尺度方面,天然林显著高于人工林(P=0.028<0.05),且极显著高于人工成熟林(P=0.004 7<0.01),阴坡人工成熟林(AMC)显著低于其余不同林分类型(P<0.05);胸径大小比数(U)方面,不同林分类型中均无显著差异,但是在径阶分布上天然林的胸径大小比数分布呈双峰,而人工林的呈单峰;在混交度(M)方面,阴坡油松林显著高于阳坡油松林(P=0.002 7<0.05),中龄林极显著低于成熟林(P=0.009 4<0.01);在密集度(C)方面,天然林的密集度显著低于人工林的密集度(P=0.000 3<0.05),阴坡油松林显著高于阳坡油松林(P=0.53>0.05),成熟林显著高于近熟林(P=0.018<0.05),天然林极显著低于人工近熟林(P=0.001 2<0.01)。在水平格局分布上,起源影响了油松林分布的均匀与聚集程度;在林木大小分化方面,坡向影响了林木的竞争强度;林分的树冠拥挤程度上,起源影响了油松林的树冠竞争;在林分混交上,坡向和林龄都会影响林分的混交程度,阳坡天然近熟林(NSS)和阳坡人工近熟林(ASS)显示了一个极低的混交度,表明短期单纯抚育或者封育较难提升阳坡油松林的混交度。
Abstract:
 In order to provide a basic support for the application of the structural indices for the management of forest tending.Differences in horizontal spatial structure indices of various types of Pinus tabuliformis forest were compared.Fifty seven sample plots of P.tabuliformis forests occurring in Huanglong Mountain were selected as research objects to examine the differences between natural and artificial forests space and spatial structure with different slope directions,and different ages based on the comparison the relative indices,such as the index of uniform angle,dominance,mixing and crowding.In the index of uniform angle,the natural forest was significantly higher than the artificial forest (P=0.028<0.05),and very significantly higher than the artificial mature forest (P=0.004 7<0.01),the artificial mature forest in shady slope was lower than the other different forest types (P<0.05).For the dominance of DBH,no significant differences were observed among different forest types,but in the distribution of diameter order,the dominance of DBH of natural forest presented a double peak curve,it was a single peak curve for artificial forest.For the mixing index,the shady slope was significantly higher than the sunny slope,natural forest was significantly lower than artificial forest (P=0.002 7<0.05),and the middle-aged forest was significantly lower than the mature forest (P=0.009 4<0.01).For the crowding index,the natural forest was significantly lower than artificial forest (P=0.000 3<0.05),the shady slope was significantly higher than the sunny slope (P=0.017<0.05),the mature forest was significantly higher than the near mature forest (P=0.018<0.05),and the natural forest was significantly lower than the artificial near mature forest (P=0.001 2<0.01).In the distribution of horizontal structure,the forest origin (natural or planted) of dominated the distribution and aggregation degree of P.tabuliformis forest.In terms of tree size differentiation,the slope direction affected the forestry competition intensity.In the view of the degree of tree crown congestion,the forest origin affected the canopy competition.In terms of forest mixing,it was affected by the slope direction and the forest age.The natural near mature forest on the sunny slope and the artificial near mature forest on the sunny slope showed very low mixing indices,indicating that the short-term tending or enclosure would not increase the degree of mixing of the forest on the sunny slope.

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备注/Memo

备注/Memo:
 收稿日期:2019-04-10修回日期:2019-04-17
基金项目:国家重点研究发展计划项目(2016YFD0600203)。
作者简介:周远博,男,硕士,研究方向:“3S”技术在资源环境中的应用。E-mail:zyb222222@163.com
*通信作者:赵鹏祥,男,副教授,研究方向:“3S”技术在资源环境中的应用。E-mail:zhaopengxiang@nwsuaf.edu.cn
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