尼日利亚两个州灌木公园盈利能力的比较研究

G. Ahmed
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引用次数: 1

摘要

灌木公园是由树木或灌木的树枝插在1至1.5米深的泻湖、湖泊或河流的泥泞底部组成的。这些树枝被放在水里形成聚集体,在很短的时间内,连同任何可能在其中寻求庇护的鱼一起被移走。在一些西非沿海泻湖,如拉各斯和尼日利亚尼日尔州的淡水环境中发现了灌木丛公园。这项研究调查了尼日利亚两个州灌木丛公园的盈利能力。数据是通过半结构化问卷收集的,该问卷以随机方式从尼日利亚的尼日尔和拉各斯州向200名拥有灌木公园的渔民发放。采用独立样本t检验比较两个独立样本的均值进行显著性检验。用卡方(χ 2)检验分类变量对之间的显著性关系。定量变量对之间的关系采用Pearson相关检验。盈利能力指标表明,两州灌木林公园均具有盈利能力。拉各斯州的灌木公园利润更高,因为拉各斯州的净收益显著(p=0.001)高于尼日尔州。拉各斯的收入比率(91%)和效益成本比(10.3)也高于尼日尔州。应支持和鼓励在灌木丛公园生产鱼类。支助的形式可以是技术援助、基础设施发展、推广服务或补贴。
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A comparative study of the profitability of brush parks in two states in Nigeria
Brush parks consist of branches of trees or shrubs stuck into muddy bottoms of lagoons, lakes or rivers at a depth of 1 to 1.5 m. The branches are placed in water to form aggregations, which are removed after a short lapse of time, together with any fish that may have sought shelter amongst them. Brush parks are found in several of the West African coastal lagoons such as Lagos and freshwater environments in Niger State, Nigeria. The study examined the profitability of the brush parks in two states in Nigeria. Data was collected by means of semi-structured questionnaire administered to 200 fishermen with brush parks selected in a random manner from Niger and Lagos States of Nigeria. Independent samples t-test was used to compare the means of two independent samples for test of significance. Chi square (χ 2 ) was used to investigate the significant relationships between pairs of categorical variables. Relationships between pairs of quantitative variables were tested using Pearson correlation. The profitability indices showed that brush parks are profitable in the two states. The brush parks are more profitable in Lagos State because net return was significantly (p=0.001) higher in Lagos than Niger State. Rate of income (91%) and benefit-cost ratio (10.3) were also higher in Lagos than Niger State. Production of fish from brush parks should be supported and encouraged. Support could be in the form of technical assistance, infrastructure development, extension services or subsidies.
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