Journal of Applied Sciences1812-56541812-5662Asian Network for Scientific Information10.3923/jas.2008.3795.3805AbduA. TanakaS. JusopS. MajidN.M. IbrahimZ. SakuraiK. WasliM.E. 122008821A study was conducted in the rehabilitation of degraded
forestland in the Bukit Kinta Forest Reserve, Perak, Peninsular Malaysia
with two main objectives: (1) to assess the growth performance of two
indigenous dipterocarp species, Shorea pauciflora (King) and S.
macroptera (Dyer) planted under various line planting widths and gap
planting openings and (2) to examine soil fertility status and site quality
of the study area using two indices; Soil Fertility Index (SFI) and Soil
Evaluation Factor (SEF), which are commonly used for estimating soil fertility
of secondary forest in humid tropical regions. The survival rate of the
two species was not affected by line planting width and gap planting opening.
However, its effect on the tree growth was very clear probably due to
preference of light intensity under the canopy, which in turn can be controlled
by line planting widths and gap planting openings. Principal component
analysis categorized the soil properties into three principal components
which explained 70% of the total variation. The First Component Score
(PC1) was related to cation retention capacity with a high contribution
of soil organic matter. The linear regression analysis indicated that
there were positive correlations between PC1 score and the proposed SFI
and SEF for both soil depths (p < 0.01). The SFI and SEF were also
highly correlated with height, dbh (diameter at breast height) and tree
volume, while PC1 score was only correlated with dbh and tree volume for
the surface soils. This shows that the SFI and SEF can be used as indices
to predict soil fertility and site quality of rehabilitated degraded forestland.]]>Adjers, G., S. Hadengganan, J. Kuusipalo, K. Nuryanto and L. Vesa,1995Shorea species.]]>73259270Adjers, G., J. Kuusipalo, S. Hadengganan, K. Nuryanto and L. Vesa,19969151160Ang, L.H. and Y. Maruyama,1995Shorea platyclados, Shorea macroptera, Shorea assamica and Hopea nervosa in open planting.]]>7541557Appanah, S. and G. Weinland,19931st Edn.,pp: 208pp: 208Arifin, A., S. Tanaka, S. Jusop, Z. Ibrahim, D. Hattori, N.M. Majid and K. Sakurai,2007517688Ashton, M.S.,1995Shorea species in the simulated light environments of a rain forest.]]>72112Bebber, D., N. Brown, M. Speight, P. Moura-Costa and Y.S. Wai,20021576575Doi, R. and K. Sakurai,200411298311Mustafa, N.M.S.N., K. Emori, H.A. Lai, P. Kamaruzaman and Y.Y. Hwai,20022002pp: 178pp: 178Hashim, M.D.,2003Tectona grandis) on lateritic soils at mata ayer forest reserve.]]>15190198Ilstedt, U., A. Malmer, A. Nordgren and P. Liau,2004Acacia mangium plantation in Sabah, Malaysia.]]>194215222ITTO,20022002Kuo, S.,19961996pp: 869-919pp: 869-919Lu, D., E. Moran and P. Mausel,200213331343Lugo, A.E.,199799919Manokaran, N. and K.M. Kochummen,19926332345McDill, M.E. and R.L. Amateis,199238409429Montagnini, F., B.M. Eibl, L. Grance, D. Maiocco and D. Nozzi,199799237246Moran, E.F., E.S. Brondizion, J.M. Tucker, M.C. da Silva-Fosberg, S. McCracken and I. Falesi,200013993108Mulvaney, R.L.,19961996pp: 1123-1184pp: 1123-1184Norisada, M., G. Hitsuma, K. Kuroda, T. Yamanoshita and M. Masumori et al.,2005Acacia mangium, a nurse tree candidate for reforestation on degraded sandy soils in the Malay Peninsula.]]>51498510Numata, S., M. Yasuda, T. Okuda, N. Kachi and M.N. Nur Supardi,200618109116Onyekwelu, J.C.,2005Nauclea diderrichii monoculture plantations in Omo Forest Reserve, Nigeria.]]>17532542Otsamo, R.,1998Anisoptera marginata Korth. (Dipterocarpaceae) on an Imperata clylindrica (L.) Beauv dominated grasslands site in South Kalimantan, Indonesia.]]>105303311Pamiotto, P.A.,1991Shorea wildings transplanted in gap and understory microsites in a lowland rainforest.]]>5403415Paniagua, A., J. Kammerbauer, M. Avedillo and A.M. Adrews,199972215225Parrotta, J.A., J.W. Turnbull and N. Jones,19979917Pena-Claros, M., R.G.A. Boot, J. Dorado-Lora and A. Zonta,2002Bertholletia excelsa in secondary forest in the Bolivian Amazon: Effect of cutting line width on survival, growth and crown traits.]]>161159168Pinard, M.A., D.W. Davidson and A. Ganing,1998Shorea parvifolia seedlings under pioneer stands in a logged-over forest.]]>10505515Ramos, J.M. and S. Del Amo,199254289304Romell, E., G. Hallsby, A. Karlsson and C. Garcia,2007Macaranga sp. dominated secondary tropical rain forest-effects on survival and above ground increment of four under-planted dipterocarp species.]]>25514521460Shono, K., S.J. Davies and Y.K. Chua,2007192534Soil Survey Staff,19991999Suhaili, R., N.M. Majid, M.Z. Hamzah and B.K. Paudyal,199861232242Tanaka, S., M. Wasli, T. Kotegawa, L. Seman and J. Sabang et al.,200716385398Tuomela, K., J. Kussipalo, L. Vesa, K. Nuryanto, A.P.S. Sagala and G. Adjers,19968195100Vanclay, J.,199254257287Vincent, A. and S.J. Davies,2003Dryobalanops aromatic and Shorea parvifolia planted in secondary forest in Sarawak, Malaysia.]]>180261271