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

Abstract

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

CLC Number:

S753
S718.5

LÜ Yong, TAN Yangxin, LÜ Feizhou, LI Xinjian, ZHANG Jiang. Research on Thinning Intensity of Natural Secondary Forest —A Case of Schima superba Secondary Forest of Qingshigang Forest Farm[J]. FOREST RESOURCES WANAGEMENT, 2013, (5): 137-141.

References

[1]申瀚文.马尾松木荷次生林生长模型研究[D].长沙:中南林业科技大学,2012.
[2]惠刚盈,劳克斯·玛佳多.森林空间结构量化分析方法[M].北京:中国科学技术出版社,2003:39-46.
[3]汤孟平,唐守正.林分择伐空间结构优化模型研究[J].林业科学,2004(5):25-31.
[4]李建军.广东湛江红树林生态系统空间结构优化研究[D].长沙:中南林业科技大学,2010:10-13.
[5]付春风,刘素青.雷州半岛红树林空间结构研究[J].华南农业大学学报,2009,30(3):55-58.
[6]李建军,李际平,刘素青,等.红树林空间结构均质性指数[J].林业科学,2010,46(6):7-14.
[7]汤孟平.森林空间结构研究现状与发展趋势[J].林业科学,2010,46(1):117-122.
[8]Gadow K V,Hui G Y,Chen B W,et al.Beziehungen zwischen winkelma β und baumabsanden[J].Forstwiss Centralbl,2003,122:127-137.
[9]Mark L H,David W H.Reconstructing the spatial pattern of trees from routine stand examination measurements[J].Forest Science,1998,44(1):125-133.
[10]Spathel f P.Reconstruction of crown length of Norway spruce(Picea abies L.Karst.)and Silver fir(Abies alba Mil.l)technique,establishment of sample methods and application in forest growth analysis[J].Annals of Forest Science,2003,60(8):833-842.
[11]惠刚盈,胡艳波.角尺度在林分空间结构调整中的应用[J].林业资源管理,2006(2):31-35.
[12]惠刚盈,胡艳波.混交林树种空间隔离程度表达方式的研究[J].林业科学研究,2001,14(1):23-27.
[13]惠刚盈,克劳斯·冯佳多,胡艳波,等.结构化森林经营[M].北京:中国林业出版社,2007:31-49.
[14]惠刚盈,胡艳波.混交林树种空间隔离程度表达方式的研究[J].林业科学研究,2001,14(1):23-27.
[15]惠刚盈,von Gadow K,Albert M.一个新的林分空间结构参数——大小比数[J].林业科学研究,1999,12(1):1-6.
[16]惠刚盈.角尺度——一个描述林木个体分布格局的结构参数[J].林业科学研究,1999,35(1):37-42.
[17]Hegyi F.A simulation model for managing jack-pine stand[M]// Fries J.Growth models for trees and stand simulation.Sweden:Royal Coll.of Forestry Stockholm,1974:74-90.
[18]吕勇,熊露桥,臧灏.青椆混交林间伐指数初探[J].林业资源管理,2012(5):89-93.
[19]惠刚盈,von Gadow K.Das Winkelma.β-Herleitung des optimalen Standardwinkels[J].Allg Forsl-u j-Ztg,2003,173(10):173-178.
[20]陈存及.半天然杉阔混交林分形成、发育与结构特征[J].福建林学院学报,1996,16(4):310-314.