基于交角的林木竞争指数

doi:10.11707/j.1001-7488.20130610

Abstract

Abstract:

This paper established a forest competition index (u_a_CI_i) based on intersection angle. The competition index can precisely express the over shading and the lateral extruding from the competitive trees. Its value ranges from 0 to 1 and it is non-dimensional. The greater the competition index value, the smaller the tree size, and the greater the exposure to competitive pressure. The value also directly and clearly reflects the relative competition situation of trees in a stand. This explains in theory that large neighborhood tree has bigger influence on the object tree than that of the small neighborhood, which is not only reflected on the over shading but also the lateral extruding. The competition index has closer correlation with the tree size than the commonly used HEGYI-competition index does. Therefore, this competition index will has great application prospect along with the contemporary fast development of measuring technology.

Key words: individual tree, competition index, intersection angle, neighbourhood comparison

CLC Number:

S758.1

Hui Gangying, Hu Yanbo, Zhao Zhonghua, Yuan Shiyun, Liu Wenzhen. A Forest Competition Index Based on Intersection Angle[J]. Scientia Silvae Sinicae, 2013, 49(6): 68-73.

References

邵国凡, 赵士洞,舒噶特.1996: 森林动态模拟——兼论红松林的优化经营.北京: 中国林业出版社.

唐守正,李希菲,孟昭和. 1993.林分生长模型研究进展.林业科学研究, 6(6): 672-679.

汤孟平. 2003.森林空间结构分析与优化经营模型研究.北京: 北京林业大学博士学位论文.

Assmann E.1953. Zur Bonitierung süddeutscher Fichtenbestände.AFZ,33(10): 61-64.

Arney J D.1973. Tables for quantifying competitive stress on individual trees. Victoria, BC: Canadian Forest Service.

Bella I E.1971. A new competition model for individual trees. Forest Science,17(3): 364-372.

Biber P.1999.Ein verfahren zum ausgleich von randeffekten bei der berechnung von kronenkonkurrenzindizes//Kenk G. Deutscher Verband Forstlicher Forschungsanstalten, Sektion Ertragskunde-Beiträge zur Jahrestagung in Volpriehausen (Solling), 189-202.

Biging G S, Dobbertin M.1992. A comparison of distance-dependent competition measures for height and basal area growth of individual conifer trees. Forest Science,38(3): 695-720.

Bristow M,Vancaly J K,Brooks L,et al.2006.Growth and species interactions of Eucalyptus pellita in a mixed and monoculture plantation in the humid tropics of north Queensland. Forest Ecology and Management,233(2): 285-294.

Brown G S,1965.Point density in stems per acre. New Zealand Forestry Research Notes, 38: 1-11.

Daniels R F.1976. Simple competition indices and their correlation with annual loblolly pine tree growth.Forest Science, 22(4): 454-456.

Ek A R, Monserud R A.1974.forest: a computer model for simulating the growth and reproduction of mixed-species forest stands. Research Report R2635.School of Natural Resources, University of Wisconsin.

Gadow K V U, Hui G Y. 1999.Modelling forest development. Dordrecht: Kluwer Academic Publisher.

Gadow K V. 2002. Forsteinrichtung: analyse und entwurf der Waldentwicklung. Göttingen: Universitätsverlag Göttingen.

Gerrard D J. 1969.Competition quotient: a new measure of the competition affecting individual forest trees. Michigan State University Agricultural Experiment Station Research Bulletin 20.

Holmes M J. Reed D D.1991.Competition indices for mixed species northern hardwoods.For Sci,37(5): 1338-1349.

Hegyi F. 1974.A simulation model for managing jack-pine stands//Fries J. Growth models for tree and stand simulation. Stockholm: Royal College of Forestry,74-90.

Lemmon P E, Schumacher F X. 1962.Volume and diameter growth of ponderosa pine trees as influenced by site Index, density, age, and size. Forest Science, 8: 237-249.

Newham R M.1964.The development of a stand model for Douglas-fir. Ph D thesis, Forestry Univ B C.

Opie J E. 1968.Predictabilility of individual tree growth using various definitions of competing basal area.For Sci,14(3): 314-323.

Pretzsch H. 1992. Konzeption und Konstruktion von Wuchsmodellen für Rein- und Mischbestände,Forstl. München: Forschungsber.

Rautiainen O. 1999.Growth dynamics and management of Shorea robusta forests in Southern Nepal. Joensuu: University of Joensuu.

Rivas J J C,Gonzalez J G A,Aguirre O,et al. 2005.The effect of competition on individual tree basal area growth in mature stands of Pinus cooperi Blanco in Durango(Mexico).Eur J Forest Res,124: 133-142.

Schuetz J-Ph.1989. Der Plenterbetrieb: Unterlage zur Vorlesung Waldbau III (Waldverjüngung). Fachbere-ich Waldbau, ETH Zürich.

Spurr S H. 1962.A measure of point density. Forest Science, 8(1): 85-96.

Staebler G R. 1951. Growth and spacing in an even-aged stand of Douglas fir. Master's Thesis, University of Michigan.

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A Forest Competition Index Based on Intersection Angle

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