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- Title
Dry matter production by an immature stand of Pinus caribaea in Nigeria.
- Authors
Egunjobi, J. K.
- Abstract
Using linear regressions between dry weight and bole girth at breast height, the standing crop of a 6-yr-old stand of Pinus caribaea L. var. hondurensis at Ibadan, Nigeria, was 891 × l0³ kg ha-1 (96 % live standing crop, 4% litter). 55% of the live standing crop was in the bole, 13% in the leaves, 20% in the roots, and 11% in branches. Dividing dry weight of standing crop by its age (6 yr) and adding a litter fall of 2000 kg ha-1, gave an annual dry matter produc. tion of 17 × 10³ kg ha-1 - an apparent underestimate of present dry matter production rates. Comparing the quantity of litter on the soil (3700 kg ha-1) with rate of litter fall, indicated that litter accumulated under the stand, in contrast with litter of broadeleaf species which mineralizes rapidly in tropical areas. When root mycorrhiza are established, young P. caribaea can accumulate large amounts of dry matter. Moreover, P. caribaea appear more productive than pines from temperate countries.
- Subjects
NIGERIA; PINUS caribaea; MYCORRHIZAS; PLANT roots; SYMBIOSIS; PINACEAE
- Publication
Oikos, 1975, Vol 26, Issue 1, p80
- ISSN
0030-1299
- Publication type
Article
- DOI
10.2307/3543281