低成本农业干预措施的地理空间影响评估,以提高环境弹性
Pratap Khattri1, Rachel Sayers1, Kunwar K Singh1,2
1AidData, Global Research Institute, William & Mary, Williamsburg, VA 23185, USA.
概括
尼泊尔的甘种植增加了采用,但没有改善土壤侵蚀控制等环境结果. 为了实现长期的气候弹性和可持续发展,需要进一步的干预措施.
科学领域:
- 环境科学 环境科学
- 农业经济学 农业经济学
- 地理空间分析的研究.
背景情况:
- 土地退化是一个主要的威胁,特别是在易受灾害影响的地区.
- 甘种植带来经济效益,但其对环境的影响还未得到充分研究.
- 西尼泊尔面临着土壤侵蚀和河岸退化.
研究的目的:
- 评估甘种植对尼泊尔西部环境结果的影响.
- 评估一项甘农业促进计划的因果关系.
- 调查甘在气候适应性中的作用.
主要方法:
- 地缘空间影响评估 (GIE) 集成遥感和经济学.
- 最佳完全匹配 (OFM) 和差异差异 (DID) 技术.
- 多时间卫星图像,作物现象学,聚类算法和机器学习用于结果测量.
主要成果:
- 在接受治疗和溢出社区中,甘采用率大幅增加.
- 预期的环境效益 (控制土壤侵蚀,稳定河岸) 没有实现.
- 地缘空间影响评估 (GIE) 已被证明是评估低成本干预措施的有效方法.
结论:
- 采用甘显示出经济稳定的潜力,但需要对环境效益进行补充性干预.
- 需要延长时间来观察长期的环境改善.
- 调查结果为政策制定者和发展从业人员提供了关于气候弹性战略的证据.
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