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首页> 外文期刊>Environment and Development Economics >Estimating the causal effect of improved fallows on environmental services provision under farmers' field conditions in Chongwe, Zambia
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Estimating the causal effect of improved fallows on environmental services provision under farmers' field conditions in Chongwe, Zambia

机译：估计在赞比亚崇威农民田间条件下休耕对环境服务提供的因果关系

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摘要

The provision of environmental services on-farm by the improved fallow (an agroforestry technology) has largely remained empirically untested in sub-Saharan Africa. Where effects of planting trees have been used to estimate the impacts on consumption of fuel wood from public land, actual estimates of the size of fuel wood consumption changes have been lacking. Using data from a survey of 324 households in the Chongwe district of Zambia, we tested the hypothesis that households embracing improved fallows use less fuel wood from public land since the technology provides wood as a by-product. Estimates from ordered probit and matching strategies showed that the technology had a significant causal effect of reducing the consumption of fuel wood from public land. Therefore, in addition to promoting it for soil fertility improvement, the extension messages should explicitly reflect the technology's potential to provide on-farm environmental quality.
机译：在撒哈拉以南非洲，通过休耕（农林业技术）提供的农场环境服务在很大程度上没有经过经验检验。在使用植树的效果来估算公共土地上对薪材消耗的影响的情况下，却缺乏对薪材消耗变化量的实际估算。使用来自赞比亚Chongwe区324户家庭的调查数据，我们检验了以下假设：由于该技术将木材作为副产品，因此接受休耕的家庭使用公共土地上的薪柴减少。根据有序的概率和匹配策略进行的估算表明，该技术具有显着的因果关系，可减少公共土地上的薪柴消耗。因此，除了推广它以改善土壤肥力外，扩展信息还应明确反映该技术提供农场环境质量的潜力。

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  • 来源
    《Environment and Development Economics》 |2015年第1期|80-100|共21页
  • 作者

    ELIAS KUNTASHULA; ERIC MUNGATANA;

  • 作者单位

    Department of Agricultural Economics, Extension and Rural Development, University of Pretoria, Pretoria 0002, South Africa;

    Department of Agricultural Economics, Extension and Rural Development, University of Pretoria, South Africa;

  • 收录信息 美国《科学引文索引》(SCI);
  • 原文格式 PDF
  • 正文语种 eng
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