2008年-世界发展银行全球_Nicaragua_-_Poverty_Assessment___Volume_2_Background_Paper_332页_3mb

Nicaragua Poverty Assessment Summary

Core Content

This document provides a comprehensive analysis of poverty and inequality trends in Nicaragua from 1993 to 2005, focusing on the relationship between economic growth and poverty reduction. It also explores the correlates of poverty, such as geographic location, education, employment, and access to infrastructure, and evaluates the potential for achieving the Millennium Development Goals (MDGs) for extreme poverty reduction.

Main Emphasis

• Poverty Profile: The paper presents a detailed profile of poverty in Nicaragua for 2005, analyzing changes from 1993 to 2005.
• Headcount Poverty: The percentage of the population living in poverty (general and extreme) remained relatively stable, with 46.2% in general poverty and 14.9% in extreme poverty in 2005.
• Inequality Trends: There was a notable decline in inequality, as measured by the Gini coefficient, from 0.49 in 1993 to 0.40 in 2005.
• Growth Incidence Curves (GICs): GICs show that growth was more beneficial to the poorest quintiles, contributing to a reduction in inequality. However, in Managua, consumption levels for typical households slightly declined.
• Poverty-Growth Elasticities: The long-term elasticity of extreme poverty with respect to growth was found to be -1.1, indicating that for each 1% increase in GDP per capita, extreme poverty would decrease by approximately 0.16 percentage points.
• Regional Analysis: The Pacific Rural and Atlantic Urban regions experienced significant declines in extreme poverty, while the Atlantic Rural region saw an increase in its population share, which offset some of the national progress.
• Correlates of Poverty: Regression analysis shows that education, household size, and access to infrastructure are strongly associated with higher consumption levels. Female-headed households and younger household heads tend to have lower consumption, while those with higher education levels and access to utilities (such as piped water and electricity) have higher consumption.

Key Information

Poverty and Inequality Trends

• General Poverty: The headcount of the population living in general poverty remained largely unchanged between 1998 and 2005, with no statistically significant changes.
• Extreme Poverty: There was a statistically significant decline in extreme poverty from 17% in 1998 to 14.9% in 2005.
• Inequality Reduction: The Gini coefficient dropped from 0.49 in 1993 to 0.40 in 2005, indicating a substantial reduction in inequality.
• Poverty Gap: The poverty gap (average distance between the poor and the poverty line) declined by nearly 30%, showing that the depth of poverty decreased.

Growth and Poverty Relationship

• Growth Incidence Curves: The GICs indicate that growth was more evenly distributed among the poor and extreme poor, contributing to the reduction in inequality.
• Elasticities: The long-term elasticity of extreme poverty with respect to growth is -1.1, which is lower than the regional average, suggesting that growth in Nicaragua has a relatively weaker impact on reducing extreme poverty compared to other countries in Latin America.
• MDG Targets: To meet the MDG target of reducing extreme poverty to 9.7% by 2015, Nicaragua would need an average GDP growth rate of 5.5% per year.

Correlates of Poverty

• Geographic Location: Consumption levels in the Rural Atlantic region converged with those in Managua, showing a reduction in regional disparities.
• Household Head Characteristics: Female-headed households and younger household heads (under 35) had lower consumption levels.
• Education: Higher education levels (primary, secondary, and beyond) were strongly associated with increased household consumption.
• Employment Sector: Employment in commerce, transport, and financial services was linked to higher consumption.
• Infrastructure Access: Households with access to piped water, electricity, and paved roads had higher consumption levels, though the impact of paved roads weakened over time.

Summary of Key Tables

Table 1.1: Poverty Patterns in Nicaragua in 2005

• National: 46.2% in general poverty, 14.9% in extreme poverty.
• Urban: 29.1% in general poverty, 5.4% in extreme poverty.
• Rural: 67.9% in general poverty, 26.9% in extreme poverty.
• Gender: Female-headed households had higher extreme poverty rates (39.9%) compared to male-headed (49.0%).

Table 1.2: Decomposition of Extreme Poverty Headcount Changes

• Within-region changes: Pacific Rural (-45%), Pacific Urban (-35%), Atlantic Urban (-20%), Atlantic Rural (-22%) contributed to the decline.
• Population-shift effect: Increased population share in Atlantic Rural offset some of the national decline.

Table 1.3: Poverty Headcount Elasticities with Respect to Growth (1998-2005)

• General Poverty Elasticity: -0.2 (1998-2005).
• Extreme Poverty Elasticity: -1.0 (1998-2005).
• Long-term (1993-2005): General poverty elasticity -0.4, extreme poverty elasticity -1.1.

Table 1.4: Regional Poverty Elasticities

• Moderate Poverty Elasticity: -0.9 (average for the region).
• Extreme Poverty Elasticity: -1.5 (average for the region).
• Nicaragua: Moderate poverty elasticity -0.4, extreme poverty elasticity -1.2.

Table 1.5: Correlates of Consumption in Nicaragua (1998-2005)

• Region: Rural Atlantic had the largest negative coefficient (-0.30).
• Household Head: Female heads (-0.01), younger heads (-0.09).
• Education: Primary education (0.17), secondary education (0.36), more than secondary (0.87).
• Infrastructure: Piped water (0.19), electricity (0.21), paved roads (0.11).
• Household Composition: More children and babies (-0.16), more adults (-0.07), more seniors (-0.06).

Conclusion

The assessment highlights that while Nicaragua experienced a decline in inequality and a reduction in extreme poverty, the relationship between growth and poverty reduction has been relatively weak. The analysis underscores the importance of education, infrastructure access, and regional development in addressing poverty. To achieve the MDG for extreme poverty by 2015, sustained high GDP growth is necessary.