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Gbadebo Jonathan Osemeobo 《Small-Scale Forestry》2005,4(3):343-357
A survey was conducted to obtain information about the use of forest products by rural women for sustaining food and financial
security at household level in the Nigerian rainforest zone. Data analysis reveals that the rural women are heavily engaged
in harvesting, processing and marketing of forest products; collection of forest products is a specialised activity based
on acquired skills and an ecological knowledge of the forests; and collection of medicinal plants is shrewd in secrecy and
involves the performance of rituals. Net income generated from natural forests by rural women in the study area varies from
about N23,000 to N113,080 per household per season. Forest regeneration has received little attention from both the rural
communities and government and this tends to undermine sustained use of the forests. 相似文献
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Gbadebo Jonathan Osemeobo 《Small-Scale Forestry》2007,6(1):93-109
The study examines the final level at which the decision to grant access to genetic resources is taken, gaps in the implementation
of the convention on biological diversity (CBD), and how to overcome them, in Nigeria. Data were collected from literature
review, a survey of policy and decision-makers concerning biodiversity, and discussions with key stakeholders on the national
status of biodiversity. The study reveals that: (i) tenure arrangements place dominant rights on biodiversity control, and
the final decision to grant access to genetic resources rests on indigenous landholding communities where resources occur;
(ii) the rural people are willing to grant access to genetic resources including traditional knowledge developed from folklore
and observations of plant and animal behaviour; and (iii) the CBD and other environmental laws in Nigeria lack effective co-ordination
and basic infrastructure for their implementation. The conclusion is reached that it has become expedient for the federal
government to enact a law on the CBD to serve as catalyst for the states of the federation to enact their laws and put in
place a uniform mechanism for sustainable conservation of biodiversity in the Nigeria. 相似文献
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Journal of Soils and Sediments - The role of initial aqueous humic acid concentrations (dose), as well as secondary environmental conditions on the sorption of PCB congeners PCB 28, 52, 77, 101,... 相似文献
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Influence of tillage on crop residue cover, soil properties and yield components of cowpea in derived savannah ectones of Nigeria 总被引：3，自引：0，他引：3
J. O. Olaoye 《Soil & Tillage Research》2002,64(3-4):179-187
The effects of five tillage treatments: no tillage (NT), disc harrowing (DH), mouldboard ploughing followed by disc harrowing (MPH), disc ploughing followed by disc harrowing (DPH), and disc ploughing followed by two passes of disc harrowing (DPHH) on crop residue cover, soil properties and some yield parameters of cowpea were investigated for a derived savannah ectone soil. The residue left on the soil surface for NT, DH, and MPH is not significantly different. The NT left 32.1 and 44.3% more residue on the soil surface than the DPH and DPHH treatments, respectively. The NT treatment had least average value of soil bulk density of 1.01 g/cm3. The mean soil bulk densities for the DH, MPH, DPH and DPHH vary between 1.20 and 1.35 g/cm3. The soil moisture content decreased with increasing soil depth. At the soil depth of 10–30 cm, the cone penetration resistance at NT was 1.18 MPa compared with 0.92 MPa for the DH treatment, although these were not significant (p≤0.05). The tillage treatments had a significant effect on grain yield, mass of leaves and stems, root length density, and number of pods per plant of cowpea except on the germination count. DH and NT treatments gave different grain yield and number of pods per plant but these values were not statistically different and represent the highest grain yield and number of pods per plant among the other treatments were considered. The root zone exploration revealed highest root density at shallow depths with the DH and MPH treatments. 相似文献
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