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Mixed method approaches to evaluate conservation impact: evidence from decentralized forest management in Tanzania

机译：评估保护影响的混合方法：来自坦桑尼亚分散森林管理的证据

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摘要

Nearly 10% of the world's total forest area is formally owned by communities and indigenous groups, yet knowledge of the effects of decentralized forest management approaches on conservation (and livelihood) impacts remains elusive. In this paper, the conservation impact of decentralized forest management on two forests in Tanzania was evaluated using a mixed method approach. Current forest condition, forest increment and forest use patterns were assessed through forest inventories, and changes in forest disturbance levels before and after the implementation of decentralized forest management were assessed on the basis of analyses of Landsat images. This biophysical evidence was then linked to changes in actual management practices, assessed through records, interviews and participatory observations, to provide a measure of the conservation impact of the policy change. Both forests in the study were found to be in good condition, and extraction was lower than overall forest increment. Divergent changes in forest disturbance levels were in evidence following the implementation of decentralized forest management. The evidence from records, interviews and participatory observations indicated that decentralized management had led to increased control of forest use and the observed divergence in forest disturbance levels appeared to be linked to differences in the way that village-level forest managers prioritized conservation objectives and forest-based livelihood strategies. The study illustrates that a mixed methods approach comprises a valid and promising way to evaluate impacts of conservation policies, even in the absence of control sites. By carefully linking policy outcomes to policy outputs, such an approach not only identifies whether such policies work as intended, but also potential mechanisms.
机译：世界上近10％的森林总面积由社区和土著群体正式拥有，但是关于分散森林管理方法对保护（和生计）影响的知识仍然难以捉摸。在本文中，采用混合方法评估了分散经营的森林对坦桑尼亚的两种森林的保护影响。通过森林清单评估了当前森林状况，森林增量和森林利用模式，并在对Landsat影像的分析基础上评估了实施分散森林管理前后森林扰动水平的变化。然后，将这些生物物理证据与实际管理实践的变化联系起来，通过记录，访谈和参与性观察进行评估，以衡量政策变化对保护的影响。研究中的两种森林都处于良好状态，其提取率低于总体森林增量。实施分散森林管理后，森林扰动水平发生了明显变化。记录，访谈和参与性观察的证据表明，权力下放的管理导致对森林利用的控制增加，并且观察到的森林扰动程度差异似乎与乡村一级的森林管理者将保护目标和森林保护的优先次序放在首位的方式不同有关。基础的谋生策略。该研究表明，即使在没有控制场所的情况下，混合方法方法仍是评估保护政策影响的有效且有前途的方法。通过将政策成果与政策产出仔细联系起来，这种方法不仅可以确定此类政策是否按预期工作，而且还可以确定潜在的机制。

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  • 来源
    《Environmental Conservation》 |2015年第2期|162-170|共9页
  • 作者

    JENS FRIIS LUND; NEIL D. BURGESS; SHABANI A. O. CHAMSHAMA; KLAUS DONS; JACK A. ISANGO; GEORGE C. KAJEMBE; HENRIK MEILBY; FRANCIS MOYO; YONIKA M. NGAGA; STEPHEN E. NGOWI; MARCO A. NJANA; EZEKIEL E. MWAKALUKWA; KATHRINE SKEIE; IDA THEILADE; THORSTEN TREUE;

  • 作者单位

    Department of Food and Resource Economics, Faculty of Science, University of Copenhagen, Denmark;

    UNEP-WCMC, 219 Huntington Road, Cambridge CB3 0DL, UK;

    Faculty of Forestry and Nature Conservation, Sokoine University of Agriculture, Tanzania;

    Department of Food and Resource Economics, Faculty of Science, University of Copenhagen, Denmark;

    Tanzania Forest Research Institute, Tanzania;

    Faculty of Forestry and Nature Conservation, Sokoine University of Agriculture, Tanzania;

    Department of Food and Resource Economics, Faculty of Science, University of Copenhagen, Denmark;

    Nelson Mandela African Institute of Science and Technology, Tanzania;

    Faculty of Forestry and Nature Conservation, Sokoine University of Agriculture, Tanzania;

    Faculty of Forestry and Nature Conservation, Sokoine University of Agriculture, Tanzania;

    Faculty of Forestry and Nature Conservation, Sokoine University of Agriculture, Tanzania;

    Department of Food and Resource Economics, Faculty of Science, University of Copenhagen, Denmark,Faculty of Forestry and Nature Conservation, Sokoine University of Agriculture, Tanzania;

    Department of Food and Resource Economics, Faculty of Science, University of Copenhagen, Denmark;

    Department of Food and Resource Economics, Faculty of Science, University of Copenhagen, Denmark;

    Department of Food and Resource Economics, Faculty of Science, University of Copenhagen, Denmark;

  • 收录信息 美国《科学引文索引》(SCI);美国《工程索引》(EI);
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

    Africa; community; conservation impact; decentralized forest management; impact evaluation; inventory; policy;

    机译：非洲;社区;保护影响;分散森林管理;影响评估;库存;政策;

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