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Fine Root Production and Distribution in the Tropical Rainforests of South-Western Cameroon: Effects of Soil Type and Selective Logging

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dc.contributor.author Ibrahima, A.
dc.contributor.author Mvondo, Z.E.A.
dc.contributor.author Ntonga, J.C.
dc.date.accessioned 2010-11-29T17:27:32Z
dc.date.available 2010-11-29T17:27:32Z
dc.date.issued 2010 en_US
dc.identifier.uri https://hdl.handle.net/10535/6591
dc.description.abstract "Little information on fine roots that play an important role in nutrient cycling was available in tropical rainforests. Distribution of fine root production and effects of selective logging on root biomass and nutrient content change were studied in the tropical rainforests of south-western Cameroon. Twenty five root samples were excavated in each of two soil depths (0-10 and 10-25 cm) and in each of three undisturbed forests (Ebom, Ebimimbang and Nyangong) and one disturbed forest by logging, using a square metallic frame of 25 x 25 cm and 30 cm high. Root samples were categorized in three diameter classes: fine (<2 mm), small (2-5 mm) and medium roots (5-20 mm). Root biomass of three diameter classes and nutrients (N, Ca, Mg, K, Na and P) of the two first diameter classes were determined. Results have shown that total root biomass varied from 9.62 (Ebom) to 29.88 t ha -1 (Ebimimbang); those of fine roots de- creased from Nyangong (7.43 t ha-1) to Ebom (1.74 t ha-1). In the top soil, the fine root biomass was 2 to 4 time lower in Ebom (1.43 t ha -1) than in other un- disturbed forests (3.28 and 5.87 t ha -1). From 70 to 80% of fine root biomass were produced in the first 10 centimeters of soil depth. Nutrient amount in fine root biomass were also lower in Ebom than in Ebimimbang and Nyangong, except the P amount (kg ha-1) which remained high in Ebom. On the contrary, no pattern of nutrient content (g kg-1) changes among forest were found, except N and P that decreased from Ebom to Nyangong. Six years after logging, its effects on root biomass and nutrient changes were not significant and during this period, root production of disturbed forest was high due to rapid regeneration of forest particularly heliophilous tree species." en_US
dc.language English en_US
dc.subject forestry--tropics en_US
dc.subject logging en_US
dc.subject biomass en_US
dc.title Fine Root Production and Distribution in the Tropical Rainforests of South-Western Cameroon: Effects of Soil Type and Selective Logging en_US
dc.type Journal Article en_US
dc.type.published published en_US
dc.type.methodology Case Study en_US
dc.coverage.region Africa en_US
dc.coverage.country Cameroon en_US
dc.subject.sector Forestry en_US
dc.identifier.citationjournal Journal of Biogeosciences and Forestry en_US
dc.identifier.citationvolume 3 en_US
dc.identifier.citationpages 130-136 en_US

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