TAILIEUCHUNG - Báo cáo khao học: "Heterogeneity and differentiation of the tree flora in three major land uses in Guangzhou City, China"

Tuyển tập các báo cáo nghiên cứu về lâm nghiệp được đăng trên tạp chí lâm nghiệp quốc tế đề tài: Heterogeneity and differentiation of the tree flora in three major land uses in Guangzhou City, China. | 107 Ann. For. Sci. 59 2002 107-118 INRA EDP Sciences 2002 DOI forest 2001010 Original article Heterogeneity and differentiation of the tree flora in three major land uses in Guangzhou City China . Jim Department of Geography The University of Hong Kong Pokfulam Road Hong Kong China Received 2nd January 2001 accepted 28 June 2001 Abstract - The tree flora of humid-tropical Guangzhou city in south China was studied to understand its composition and variations. Aerial photographs identified three major urban-forest types in three land uses institutional park and roadside. Data on 115 064 trees in 246 species were statistically analyzed. Park and roadside areas have lower species richness than institutional forest. Park habitat has relatively more rooms for species biomass and floral enrichment. Roadside leads in tree density with full utilization of plantable space whereas institutional forest has the highest species density index and the most rare natives. Commonality of species amongst forests limits to 91 species with park and institutional sharing 68 species and road sharing merely 8 and 1 species respectively with institutional and park. Institutional forest has distinct composition and character with less domination by popular species and more solitary or rare species. Native species exceed exotics at roadside institutional and park have a reverse trend. Practical implications for urban-forest management are discussed. urban forest urban tree species diversity species association tree management Résumé - Hétérogénéité et différenciation de la flore arborée dans trois principaux types d occupation des sols dans la ville de Guangzhou Chine. La flore arborée de la ville de Guangzhou du sud de la Chine caractérisée par un climat tropical humide a été étudiée dans le but de comprendre sa composition et ses variations. Les photographies aériennes ont permis d identifier trois types ma-jeurs de forêts urbaines dans trois types d occupation des sols .

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