International Journal of Soil Science1816-4978xxxx-xxxxAcademic Journals Inc.10.3923/ijss.2009.104.113Terminalia superba Age Plantations and Natural Forest in Kouilou, Congo]]>Goma-TchimbakalaJ. 4200944A comparative study was carried out in Mayombe, between
the soil of natural forest and the soil under three Terminalia superba
plantations of 7, 12 and 48 year-old. In each plantation type and natural
forest composite soil samples were taken in 0-10 cm layer. The goal was
to investigate the dynamic of total carbon and nitrogen in whole and soil
aggregate fraction in order to assess the impact of reforestation on the
soil fractions. Organic carbon was analyzed by the modified Walkey and
Black method. Total nitrogen was determined using the Kjeldhal procedure.
Statistically differences between the sites were tested using the Analysis
of Variance (ANOVA). The results showed that in the surface soil the carbon
content and total nitrogen were respectively 22.2 and 1.56 μg g-1
in the forest. The carbon content was between 14.9 and 23.5 mg g-1
while total nitrogen was between 1.31 and 2.24 μg g-1
in the plantations. The results also revealed that plantation aging had
a marked impact on the total carbon and nitrogen concentration of soil
aggregate fractions. The carbon and the nitrogen associated with the sand
and the clay exhibited a significant increase. The carbon concentration
was between 1.51 and 2.09 mg g-1 in the light aggregate fractions
and between 0.95 and 1.04 mg g-1 in the organomineral aggregate
fraction. The accumulation of total carbon in the whole soil and soil
aggregate fractions and their increase during plantation aging suggested
that the T. superba plantations could facilitate significant carbon
storage.]]>Balesdent, J., J.P. Petraud and C. Feller,19912995106Christensen, B.T.,200152345353Davidson, E.A. and I.L. Ackerman,199320161193Diekow, J., J. Mielniczuk, H. Knicker, C. Bayer, D.P. Dick and I. Kogel-Knabner,2005268319328Feller, C. and M.H. Beare,19977969116Goma-Tchimbakala, J. and F. Bernhard-Reversat, 2006(Terminalia superba) and a natural tropical forest in Mayombe, Congo.]]>229304313Goma-Tchimbakala, J. and S. Makosso,2008843464353Gregorich, E.G., M.H. Beare, U.F. McKim and J.O. Skjemstad,200670975985Guggenberger, G. and W. Zech,199912493104Hassink, J.,199660487491He, N., L. Wu, Y. Wang and X. Han,2009150302308He, Y., Z. Xu, C. Chen, J. Burton, Q. Ma, Y. Ge and J. Xu,2008147116125Jaiyeoba, I.A.,2003709198Koutika, L.S., N. Sanginga, B. Vanlauwe and S. Weise,200234757765Liao, J.D., T.W. Boutton and J.D. Jastrow,20063831843196Paul, K.I., P.J. Polglase, J.G. Nyakuengama and P.K. Khanna,2002168241257Plante, A.F., R.T. Conant, C.E. Stewart, K. Paustian and J. Six,200670287296Saviozzi, A., R. Levi-Minzi, R. Cardelli and R. Riffaldi,2001233251259Sikora, L.J., V. Yakovchenko, C.A. Camberdella and J.W. Doran,19961996pp: 41-50pp: 41-50Six, J., P. Callewaert, S. Lenders, S. De Gryze and S.J. Morris et al.,20026619811987Six, J., H. Bossuyt, S. Degryze and K. Denef,200479731Tiessen, H. and J.W.B. Stewart, 198347509514Wright, A.L. and F.M. Hons,200468507513Wright, A.L. and F.M. Hons,200569141147Wu, L., N. He, Y. Wang and X. Han,200837663668Yimer, F., S. Ledin and A. Abdelkadir, 2007242337342Zagal, E., C. Munoz, M. Quiroz and C. Cordova,2009151191198Zinn, Y.L., R. Lal, J.M. Bigham and D.V.S. Resck,20077112041214Zinn, Y.L., R. Lal and D.V.S. Resck,2005842840