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The composition and diversity of natural regeneration of tree species in gaps under different intensities of forest disturbance

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Journal of Forestry Research 2021年第5期32卷 1843-1853页

作者： Maame Esi Hammond Radek Pokorný Daniel Okae-Anti Augustine Gyedu irene otwuwa obeng Department of Silviculture Faculty of Forestry and Wood TechnologyMendel University in BrnoZemedelska 361300 BrnoCzech Republic Department of Soil Science School of AgricultureUniversity of Cape CoastP.M.BCape CoastGhana Forestry Services Division(FSD) P.M.BKumasiGhana 4 Madina-AccraGhana

The positive ecological interaction between gap formation and natural regeneration has been examined but little research has been carried out on the effects of gaps on natural regeneration in forests under different intensities of *** study evaluates the composition,diversity,regeneration density and abundance of natural regeneration of tree species in gaps in undisturbed,intermittently disturbed,and disturbed forest *** Tano Forest Reserve in Ghana was the study area and three gaps each were selected in the three forest site *** circular subsampling areas of 1 m2 were delineated at 2 m spacing along north,south,east,and west transects within individual *** on natural regeneration<350 cm height were *** results show that the intensity of disturbance was disproportional to gap *** diversity differed significantly between undisturbed and disturbed sites and,also between intermittently disturbed and disturbed sites for Simpson’s(1-D),Equitability(J),and Berger-Parker(B-P)***,there was no significant difference among forest sites for Shannon diversity(H)and Margalef richness(MI)*** species composition on the sites *** density on the disturbed site was significantly higher than on the two other *** abundance and density of shade-dependent species on all sites identified them as opportunistic replacements of gap-dependent *** species giving way to shade tolerant species is a natural process,thus make them worst variant in gap regeneration.

关键词： Disturbed Intermittently disturbed Undisturbed Forest sites Gap regeneration

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