闽楠天然次生林林木综合竞争指数研究
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摘要
以江西省吉安市闽楠天然次生林作为研究对象,通过八邻域平移法确定对象木,分别采用四邻体法、Voronoi图法选取竞争木,并基于Hegyi简单竞争指数重新构建含胸径、树高、冠幅及林木间距等因子的综合竞争指数,利用Pearson相关分析法和曲线拟合比较分析不同方法选取竞争木的简单竞争指数与综合竞争指数的优劣。结果表明:1)简单竞争指数和综合竞争指数与胸径、树高及冠幅之间均呈极显著负相关(P<0.01);2)综合竞争指数与胸径、树高及冠幅的相关性和拟合度均高于简单竞争指数;3)基于Voronoi图法构建的简单竞争指数和综合竞争指数与胸径、树高及冠幅的相关性和拟合度均高于基于四邻体法构建的简单竞争指数和综合竞争指数。研究结果可为闽楠天然次生林的合理经营与保护等措施的制订提供参考依据。
Based on the typical sample investigation on the natural secondary forest,the eight neighbourhood translation method was used to determine the objective trees.The competitive trees were selected by the methods of four neighbourhoods and Voronoi map.Based on the Hegyi simple competition index,the comprehensive competition indexes of the factors such as DBH,tree height,crown width and tree spacing were reconstructed.A comparative analysis was made between the simple competitive index and comprehensive competitive index of different selection methods of the competitive trees.The main results and conclusions were as follows:1) There was a significant negative correlation between the simple competition index and comprehensive competition index with the DBH,tree height and crown width(P<0.01).2) The correlations and the fitting degrees between the comprehensive competition index with the DBH,tree height and crown width were all higher than that of simple competition index.3) The correlations and the fitting degrees between the simple competition index and comprehensive competition index based on the Voronoi map were all higher than the simple competition index and comprehensive competition index constructed by the four neighborhood method.
Based on the typical sample investigation on the natural secondary forest,the eight neighbourhood translation method was used to determine the objective trees.The competitive trees were selected by the methods of four neighbourhoods and Voronoi map.Based on the Hegyi simple competition index,the comprehensive competition indexes of the factors such as DBH,tree height,crown width and tree spacing were reconstructed.A comparative analysis was made between the simple competitive index and comprehensive competitive index of different selection methods of the competitive trees.The main results and conclusions were as follows:1) There was a significant negative correlation between the simple competition index and comprehensive competition index with the DBH,tree height and crown width(P<0.01).2) The correlations and the fitting degrees between the comprehensive competition index with the DBH,tree height and crown width were all higher than that of simple competition index.3) The correlations and the fitting degrees between the simple competition index and comprehensive competition index based on the Voronoi map were all higher than the simple competition index and comprehensive competition index constructed by the four neighborhood method.
引文
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[18] 游晓庆,彭诗涛,郭孝玉,等.闽楠天然次生林林分空间结构研究[J].江西农业大学学报,2016,38(4):660-667.
[19] 刘宝,陈存及,陈世品,等.福建明溪闽楠天然林群落种间竞争的研究[J].福建林学院学报,2005,25(2):117-120.
[20] 张宁,张怀清,林辉,等.基于竞争指数的杉木林分生长可视化模拟研究[J].林业科学研究,2013,26(6):692-697.
[21] 李雪云,潘萍,臧颢,等.闽楠天然次生林自然更新的影响因子研究[J].林业科学研究,2017,30(5):701-708.
[22] 江香梅,肖复明,叶金山,等.闽楠天然林与人工林生长特性研究[J].江西农业大学学报,2009,31(6):1049-1054.JIANG X M,XIAO F M,YE J S,et al.A study on the growth characteristics of Phoebe bournei in natural forest and plantation stands[J].Acta Agriculturae Universitatis Jiangxiensis,2009,31(6):1049-1054.(in Chinese)
[23] 钱升平,吕飞舟,边更战,等.基于简单竞争指标的青冈栎次生林林木竞争单元构建[J].林业资源管理,2016(2):56-61.
[24] 李际平,房晓娜,封尧,等.基于加权Voronoi图的林木竞争指数[J].北京林业大学学报,2015,37(3):61-68.LI J P,FANG X N,FENG Y,et al.Tree competition indexes based on weighted Voronoi diagram[J].Journal of Beijing Forestry University,2015,37(3):61-68.(in Chinese)
[25] YIN D S.Competition relationship of populations of natural secondary Acer mono forest[J].Bulletin of Botanical Research,2012,32(1):105-109.
[26] ?EBEN V,BOSEL A M,KONOPKA B,et al.Indices of tree competition in dense spruces stand originated from natural regeneration[J].Forestry Journal,2013,59(3):172-179.
[27] 曾思齐,龙时胜,肖化顺,等.南方地区青冈栎次生林种内与种间竞争研究[J].中南林业科技大学学报,2016,36(10):1-5.ZENG S Q,LONG S S,XIAO H S,et al.Intraspecific and interspecific competition of Cyclobalanopsis glauca secondary forests in south China[J].Journal of Central South University of Forestry & Technology,2016,36(10):1-5.(in Chinese)
[2] 仇建习,汤孟平,娄明华,等.基于Hegyi改进模型的毛竹林空间结构和竞争分析[J].生态学报,2016,36(4):1058-1065.QIU J X,TANG M P,LOU M H,et al.Analysis of the spatial structure and competition with a Phyllostachys edulis standbased on an improved Hegyi model[J].Acta Ecologica Sinica,2016,36(4):1058-1065.(in Chinese)
[3] 吴建强,王懿祥,杨峪,等.基于GIS技术的林木竞争指数计算系统的设计与开发[J].西北林学院学报,2014,29(4):175-181.WU J Q,WANG Y X,YANG Y,et al.Design and development of competition index calculation system based on GIS technology[J].Journal of Northwest Forestry University,2014,29(4):175-181.(in Chinese)
[4] SKOLE D L.Secondary forest expansion in the Brazilian Amazon and the refinement of forest transition theory[J].Society & Natural Resources,2003,16(4):277-294.
[5] 惠刚盈,胡艳波,赵中华,等.基于交角的林木竞争指数[J].林业科学,2013,49(6):68-73.HUI G Y,HU Y B,ZHAO Z H,et al.A forest competition index based on intersection angle[J].Scientia Silvae Sinicae,2013,49(6):68-73.(in Chinese)
[6] 袁兴中,陈忠礼,刘红.消落带湿地优势植物竞争关系[J].生态学杂志,2011,30(9):1863-1867.
[7] 殷鸣放,薛娟,宁良智,等.基于近自然林业经营的不同密度林木竞争关系比较分析[J].西北林学院学报,2013,28(5):149-153.YIN M F,XUE J,NING L Z,et al.Comparative study on competition relationship of the forests with different densities based on near-nature forestry management[J].Journal of Northwest Forestry University,2013,28(5):149-153.(in Chinese)
[8] OPIE J E.Predictability of individual tree growth using various definitions of competing basal area[J].Forest Science,1968,14(3):314-323.
[9] 吕飞舟,石程远,朱光玉,等.基于冠幅比数的次生林林木分级研究[J].西北林学院学报,2016,31(3):211-214.LV F Z,SHI C Y,ZHU G Y,et al.Classification of the secondary forest based on crown comparison index[J].Journal of Northwest Forestry University,2016,31(3):211-214.(in Chinese)
[10] ARNEY J D.Tables for quantifying competitive stress on individual trees[M].1973.
[11] 张晔珵,张怀清,陈永富,等.基于树冠因子的林木竞争指数研究[J].林业科学研究,2016,29(1):80-84.
[12] 吕勇,钱升平,吕飞舟,等.青冈栎次生林林木综合竞争压力指数研究[J].中南林业科技大学学报,2017,37(10):1-6.
[13] BELLA I E.A new competition model for individual trees[J].Forest Science,1971,17(17):364-372.
[14] BOLNICK D I,INGRAM T,STUTZ W E,et al.Ecological release from interspecific competition leads to decoupled changes in population and individual niche width[J].Proceedings of the Royal Society B Biological Sciences,2010,277(1689):1789-1797.
[15] 汤孟平,陈永刚,施拥军,等.基于Voronoi图的群落优势树种种内种间竞争[J].生态学报,2007,27(11):4707-4716.TANG M P,CEHN Y G,SHI Y J,et al.Intraspecific and interspecific competition analysis of community dominant plant populations based on Voronoi diagram[J].Acta Ecologica Sinica,2007,27(11):4707-4716.(in Chinese)
[16] 刘宝,陈存及,林思祖,等.不同密度闽楠苗木地上部分与地下部分竞争的定量研究[J].福建林学院学报,2013,33(2):119-123.
[17] 邵明晓,文仕知,何功秀,等.不同林龄闽楠人工林生物量结构特征[J].中南林业科技大学学报,2014,34(6):44-48.
[18] 游晓庆,彭诗涛,郭孝玉,等.闽楠天然次生林林分空间结构研究[J].江西农业大学学报,2016,38(4):660-667.
[19] 刘宝,陈存及,陈世品,等.福建明溪闽楠天然林群落种间竞争的研究[J].福建林学院学报,2005,25(2):117-120.
[20] 张宁,张怀清,林辉,等.基于竞争指数的杉木林分生长可视化模拟研究[J].林业科学研究,2013,26(6):692-697.
[21] 李雪云,潘萍,臧颢,等.闽楠天然次生林自然更新的影响因子研究[J].林业科学研究,2017,30(5):701-708.
[22] 江香梅,肖复明,叶金山,等.闽楠天然林与人工林生长特性研究[J].江西农业大学学报,2009,31(6):1049-1054.JIANG X M,XIAO F M,YE J S,et al.A study on the growth characteristics of Phoebe bournei in natural forest and plantation stands[J].Acta Agriculturae Universitatis Jiangxiensis,2009,31(6):1049-1054.(in Chinese)
[23] 钱升平,吕飞舟,边更战,等.基于简单竞争指标的青冈栎次生林林木竞争单元构建[J].林业资源管理,2016(2):56-61.
[24] 李际平,房晓娜,封尧,等.基于加权Voronoi图的林木竞争指数[J].北京林业大学学报,2015,37(3):61-68.LI J P,FANG X N,FENG Y,et al.Tree competition indexes based on weighted Voronoi diagram[J].Journal of Beijing Forestry University,2015,37(3):61-68.(in Chinese)
[25] YIN D S.Competition relationship of populations of natural secondary Acer mono forest[J].Bulletin of Botanical Research,2012,32(1):105-109.
[26] ?EBEN V,BOSEL A M,KONOPKA B,et al.Indices of tree competition in dense spruces stand originated from natural regeneration[J].Forestry Journal,2013,59(3):172-179.
[27] 曾思齐,龙时胜,肖化顺,等.南方地区青冈栎次生林种内与种间竞争研究[J].中南林业科技大学学报,2016,36(10):1-5.ZENG S Q,LONG S S,XIAO H S,et al.Intraspecific and interspecific competition of Cyclobalanopsis glauca secondary forests in south China[J].Journal of Central South University of Forestry & Technology,2016,36(10):1-5.(in Chinese)