拉姆红树林采伐的可持续性如何？森林结构分析

IF 1.2 4区农林科学 Q3 FORESTRY

Journal of Sustainable Forestry Pub Date : 2022-09-16 DOI:10.1080/10549811.2022.2123357

Anthony Mbatha, M. Githaiga, K. Kiplagat, J. Kairo, Fredrick Mungai

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引用次数: 2

摘要

红树林资源的可持续管理需要长期监测森林的状况和条件。这项研究评估了肯尼亚拉姆五个红树林管理区块的红树林结构和再生情况。采用分层随机抽样策略，沿着垂直于海岸线的带状断面，在152平方米、400平方米的地块上对红树林进行了抽样。采用线性再生取样（LRS）来评估自然再生的组成和模式。在这项研究中发现了六种红树林。根据重要性值指数，拉姆红树林的优势种为短茎红根和麦尾藻。至少42%的森林里都有低质量的电线杆，这表明人类压力持续存在。然而，在森林中观察到的7342±450幼树ha−1的自然再生率被认为足以支持干扰后的森林恢复。这项研究的结果直接应用于制定拉姆红树林的收获计划。

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How Sustainable is Mangrove Harvesting in Lamu? An Analysis of Forest Structure

ABSTRACT Sustainable management of mangrove resources requires monitoring of status and conditions of the forest over time. This study assessed structure and regeneration of mangroves across five mangrove management blocks in Lamu, Kenya. Using stratified random sampling strategy, mangroves were sampled in 152 square plots of 400 m2 along belt transects established perpendicular to the shoreline. Linear regeneration sampling (LRS) was employed to assess composition and patterns of natural regeneration. Six mangrove species were encountered during this study. Based on importance value index, the dominant mangrove species in Lamu are Rhizophora mucronata and Ceriops tagal. At least 42% of the forest is stocked with low-quality poles, an indicator of prolonged human pressure. However, natural regeneration rate of 7,342 ± 450 juveniles ha−1 observed in the forest is considered adequate to support forest recovery after disturbance. The findings of the study have direct applications in the development of harvest plans for mangroves in Lamu.

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来源期刊

Journal of Sustainable Forestry Social Sciences-Geography, Planning and Development

CiteScore

3.90

自引率

12.50%

发文量

期刊介绍： Journal of Sustainable Forestry publishes peer-reviewed, original research on forest science. While the emphasis is on sustainable use of forest products and services, the journal covers a wide range of topics from the underlying biology and ecology of forests to the social, economic and policy aspects of forestry. Short communications and review papers that provide a clear theoretical, conceptual or methodological contribution to the existing literature are also included in the journal. Common topics covered in the Journal of Sustainable Forestry include: • Ecology, management, recreation, restoration and silvicultural systems of all forest types, including urban forests • All aspects of forest biology, including ecophysiology, entomology, pathology, genetics, tree breeding, and biotechnology • Wood properties, forest biomass, bioenergy, and carbon sequestration • Simulation modeling, inventory, quantitative methods, and remote sensing • Environmental pollution, fire and climate change impacts, and adaptation and mitigation in forests • Forest engineering, economics, human dimensions, natural resource policy, and planning Journal of Sustainable Forestry provides an international forum for dialogue between research scientists, forest managers, economists and policy and decision makers who share the common vision of the sustainable use of natural resources.