The importance of different forest management systems for people’s dietary quality in Tanzania

IF 4 2区 环境科学与生态学 Q1 ECOLOGY Landscape Ecology Pub Date : 2024-09-11 DOI:10.1007/s10980-024-01961-6
R. S. Olesen, F. Reiner, B. den Braber, C. Hall, C. J. Kilawe, J. Kinabo, J. Msuya, L. V. Rasmussen
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Abstract

Context

A large body of literature has shown that forests provide nutritious foods in many low- and middle-income countries. Yet, there is limited evidence on the contributions from different types of forest and tree systems.

Objectives

Here, we focus on individual trees and smaller forest patches outside established forest reserves as well as different forest management systems.

Methods

We do so by combining novel high-resolution data on tree cover with 24-h dietary recall surveys from 465 women in Tanzania.

Results

We show that people with more unclassified tree cover (i.e., individual trees and small forest patches) in their nearby surroundings have more adequate protein, iron, zinc, and vitamin A intakes. We also find that having a nearby forest under Participatory Forest Management (PFM) system is associated with higher adequacy levels of energy, iron, zinc and vitamin A. By contrast, tree cover within other types of forest (e.g., Government Forest Reserves and Government Forest Plantations) is not positively associated with people’s dietary quality.

Conclusions

Our key finding is that having individual trees, smaller forest patches and/or forest under PFM in close proximity is more beneficial for people’s diets than other types of established forests. Our results highlight the nutritional importance of trees outside established forests and question the often-assumed benefits of forests if these are made inaccessible by social barriers (e.g., legislation). Finally, our results emphasize the need to distinguish between different forest management systems when studying forest-diet linkages.

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不同森林管理系统对坦桑尼亚人民饮食质量的重要性
背景大量文献表明,森林为许多中低收入国家提供了营养丰富的食物。结果我们发现,附近有更多未分类树木覆盖(即单个树木和小片森林)的人蛋白质、铁、锌和维生素 A 的摄入量更充足。我们还发现,附近有参与式森林管理(PFM)系统的森林与较高的能量、铁、锌和维生素 A 摄入量有关。结论我们的主要发现是,与其他类型的已建森林相比,附近有单独的树木、较小的森林斑块和/或参与式森林管理的森林对人们的饮食更有益。我们的研究结果强调了现有森林以外树木的营养重要性,并质疑了人们通常认为的森林益处,如果这些益处因社会障碍(如立法)而无法获得的话。最后,我们的研究结果强调了在研究森林与饮食的联系时区分不同森林管理系统的必要性。
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来源期刊
Landscape Ecology
Landscape Ecology 环境科学-地球科学综合
CiteScore
8.30
自引率
7.70%
发文量
164
审稿时长
8-16 weeks
期刊介绍: Landscape Ecology is the flagship journal of a well-established and rapidly developing interdisciplinary science that focuses explicitly on the ecological understanding of spatial heterogeneity. Landscape Ecology draws together expertise from both biophysical and socioeconomic sciences to explore basic and applied research questions concerning the ecology, conservation, management, design/planning, and sustainability of landscapes as coupled human-environment systems. Landscape ecology studies are characterized by spatially explicit methods in which spatial attributes and arrangements of landscape elements are directly analyzed and related to ecological processes.
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