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Floodplain resource management: An economic analysis of policy issues in Bangladesh.

机译：洪泛区资源管理：孟加拉国政策问题的经济分析。

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摘要

This dissertation investigates the tradeoffs between floodplain agriculture and fisheries production in the Brahmaputra river basin of Bangladesh, where both sectors are simultaneously affected by floodplain development policies. Our goal is to study the impact of development policies on these two sectors and to identify key factors that affect the sensitivity of results. Current floodplain management policies primarily include structural changes in the form of flood control, drainage and irrigation projects, which are designed to enhance agriculture production. These policies ignore the effects on the fisheries sector since it is not a commercially important sector. However, the fishery is an important natural resource sector and a source of subsistence for the rural poor. We develop a floodplain management model (FMM) where net returns to agriculture and fisheries are jointly maximized. The model accounts explicitly for the effect of floodplain area on fisheries production, where productivity is a function of the flood land type. These are derived from simulated annual hydrographs and the area-elevation relationship estimated for the study area. We developed a statistical methodology for simulating hydrographs based on Fourier analysis. The FMM is numerically solved using data from the Bangshi-Dhaleswari floodplain in the North-central region of Bangladesh. Results show that optimal production in a natural floodplain yield higher net returns than where the floodplain is modified by flood control structures. The conditions under which this is true are discussed. This finding has implications for floodplain management policies, which to date have the stated goal of increasing agricultural productivity only. Neglecting the fisheries sector may significantly affect the long-run sustainability of the floodplain. These quantitative findings need to be evaluated in the proper institutional context before policy recommendations are made, since local institutions play an important role in how resources are allocated in the floodplain.
机译：本文研究了孟加拉国布拉马普特拉河流域的洪泛区农业与渔业生产之间的权衡，在这两个部门同时受到洪泛区发展政策的影响。我们的目标是研究发展政策对这两个部门的影响，并确定影响结果敏感性的关键因素。当前的洪泛区管理政策主要包括防洪，排水和灌溉项目形式的结构性变化，旨在提高农业产量。这些政策忽略了对渔业部门的影响，因为它不是商业上重要的部门。但是，渔业是重要的自然资源部门，也是农村贫困人口的生计来源。我们开发了洪泛区管理模型（FMM），在该模型中，农业和渔业的净收益共同最大化。该模型明确考虑了洪泛区面积对渔业生产的影响，其中生产力是洪水土地类型的函数。这些来自模拟的年度水文图和研究区域估计的面积与海拔的关系。我们开发了一种基于傅里叶分析的水文模拟统计方法。使用孟加拉国中北部地区Bangshi-Dhaleswari洪泛区的数据对FMM进行了数值求解。结果表明，与通过防洪结构改造的洪泛区相比，天然洪泛区的最佳生产可获得更高的净回报。讨论了这是真的条件。这一发现对洪泛区管理政策有影响，迄今为止，洪泛区管理政策仅具有提高农业生产率的既定目标。忽视渔业部门可能会严重影响洪泛区的长期可持续性。在提出政策建议之前，需要在适当的机构环境中对这些定量研究结果进行评估，因为地方机构在洪泛区如何分配资源方面发挥着重要作用。

著录项

  • 作者

    Islam, Mursaleena.;

  • 作者单位

    University of Illinois at Urbana-Champaign.;

  • 授予单位 University of Illinois at Urbana-Champaign.;
  • 学科 Economics General.; Economics Agricultural.; Agriculture Fisheries and Aquaculture.
  • 学位 Ph.D.
  • 年度 2001
  • 页码 174 p.
  • 总页数 174
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类 经济学;农业经济;水产、渔业;
  • 关键词

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