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来源类型 | Working Paper |
规范类型 | 论文 |
The Role of Soil Conservation on Mean Crop Yield and Variance of Yield: Evidence from the Ethiopian Highlands | |
Menale Kassie; John Pender; Mahmud Yesuf; Gunnar Kohlin; Elias Mulugeta | |
发表日期 | 2008-03-07 |
出版年 | 2008 |
页码 | EfD DP 08-08 |
语种 | 英语 |
摘要 | Land degradation has been one of the major areas of concern in Ethiopia. Governments and development agencies have invested substantial resources to promote land management technologies and reduce land degradation. However, there is little understanding of the impacts that land management technologies have on yield and yield variability. This paper investigates the impact of stone bunds on mean yield and variance of yield, using multiple plot observations per household in low- and highrainfall areas of the Ethiopian highlands. Our analysis incorporated the propensity score matching method, stochastic dominance analysis, and exogenous and endogenous switching regression methods. We found statistically significant and positive impact of stone bunds on yield in low-rainfall areas. This did not hold in high-rainfall areas. We did not find a statistically significant stone-bund impact on production risk in either high- or low-rainfall areas. The results were robust to both parametric and nonparametric analysis. The overall conclusion from the analysis is that the performance of stone bundsvaries by agro-ecology type. This implies the need for designing and implementing appropriate technologies that enhance productivity and are better adapted to local conditions. |
主题 | Development and Environment |
子主题 | Africa |
URL | http://www.rff.org/research/publications/role-soil-conservation-mean-crop-yield-and-variance-yield-evidence-ethiopian |
来源智库 | Resources for the Future (United States) |
资源类型 | 智库出版物 |
条目标识符 | http://119.78.100.153/handle/2XGU8XDN/40912 |
推荐引用方式 GB/T 7714 | Menale Kassie,John Pender,Mahmud Yesuf,et al. The Role of Soil Conservation on Mean Crop Yield and Variance of Yield: Evidence from the Ethiopian Highlands. 2008. |
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