Causes of secondary forest loss in a lowland rainforest of Nigeria

Q1 Environmental Science Parks Pub Date : 2023-11-01 DOI:10.2305/bivx7649

Farhan Jimba Moshood, Samuel O. Olajuyigbe

引用次数: 0

Abstract

The increasing human population which promotes the conversion of secondary forests into other land use types has resulted in the decrease of forest areas in Nigeria. This study examined the causes of secondary forest loss in Osho Forest Reserve, Nigeria. Changes in Land Use Land Cover (LULC) were assessed using Landsat 5 TM and Landsat 8 OLI/TC images for four timelines over a period of 38 years (1984, 2013, 2017 and 2022). Results showed an increase in area of plantations, bare land and farmland, leading to a decrease in secondary forest cover. Farmland increased from 731 ha to 859 ha at the rate of 3.7 ha yr-1, bare land increased from 314 ha to 523 ha at 5.5 ha yr-1, plantations increased from 1,105 ha to 1,495 ha at 10.3 ha yr-1,while secondary forest drastically reduced from 1,132 ha to 405 ha at 19.1 ha yr-1. At this rate, secondary forest is estimated to be lost in the study area by 2050.. Osho Forest Reserve requires immediate management interventions driven by updated laws and policies, silvicultural treatment, community engagement and ecosystem rehabilitation. In addition, implementation of sustainable forest management would enhance secondary forest recovery.

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尼日利亚低地雨林次生林消失的原因

人口的增加促进了次生林向其他土地利用类型的转化，导致尼日利亚森林面积的减少。本研究探讨了尼日利亚奥肖森林保护区次生林减少的原因。使用 Landsat 5 TM 和 Landsat 8 OLI/TC 图像评估了 38 年间（1984 年、2013 年、2017 年和 2022 年）四个时间段内土地利用土地覆盖（LULC）的变化。结果显示，种植园、裸地和农田面积增加，导致次生林覆盖面积减少。农田以每年 3.7 公顷的速度从 731 公顷增加到 859 公顷，裸地以每年 5.5 公顷的速度从 314 公顷增加到 523 公顷，人工林以每年 10.3 公顷的速度从 1105 公顷增加到 1495 公顷，而次生林以每年 19.1 公顷的速度从 1132 公顷锐减到 405 公顷。按照这个速度，预计到 2050 年，研究区内的次生林将消失殆尽。奥修森林保护区需要立即采取管理措施，包括更新法律和政策、造林处理、社区参与和生态系统恢复。此外，实施可持续森林管理将促进次生林的恢复。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Parks Environmental Science-Nature and Landscape Conservation

CiteScore

5.80

自引率

0.00%

发文量

审稿时长

20 weeks

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