Application of Remote Sensing and GIS Techniques in Land Use Changes: A Case Study of a Forest Reserve in the Southwestern Nigeria

Q4 Agricultural and Biological Sciences

林业科学研究 Pub Date : 2021-01-01 DOI:10.35248/2168-9776.21.10.256

Asifat Janet Temitope, Ogunbode Timothy Oyebamiji

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引用次数: 1

Abstract

Unabated exploitation of biodiversity and its consequential effects on natural environment has been of a serious concern to stakeholders globally. Thus, this study examines land use changes in Oba Hill forest reserve, Osun State, Southwestern, Nigeria between 1986 and 2016 using remote sensing technique. The study utilised satellite imageries from Landsat TM 1986, ETM 1996, 2006, and ETM+ 2016. The research revealed that the undisturbed forested area declined from 26.169 km2 in 1986 to 15.318 km2 in 2016. Also, the cultivated/disturbed forest land increased from 22.238 km2 to 41.499 km2 in 2016 whereas the built up areas decreased from 12.215 km2 to 3.805 km2. The forested lands were decreasing while the cultivated/disturbed land areas were on the increase. This implies that more of the forested lands were opened up for cultivation and other purposes while part of the built- up areas were also taken over by shrubs. Thus, there is degradation in the natural resources as a result of excessive and unguided exploitation of forest resources. It is recommended that government should put in place appropriate policies towards sound management of our natural resources to ensure a sustainable development.

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遥感和GIS技术在土地利用变化中的应用——以尼日利亚西南部森林保护区为例

对生物多样性的持续开发及其对自然环境的影响一直是全球利益相关者严重关注的问题。因此，本研究利用遥感技术研究了1986年至2016年尼日利亚西南部奥孙州奥巴山森林保护区的土地利用变化。该研究利用了Landsat TM 1986、ETM 1996、2006和ETM+ 2016的卫星图像。研究表明，未受干扰的森林面积从1986年的26.169 km2减少到2016年的15.318 km2。耕地/干扰林地面积从22.238 km2增加到41.499 km2，建成区面积从12.215 km2减少到3.805 km2。林地面积呈减少趋势，耕地/干扰地面积呈增加趋势。这意味着更多的林地被开辟用于耕作和其他目的，而部分建成区也被灌木所取代。因此，由于过度和无指导地开发森林资源，自然资源出现退化。我们建议政府应制订适当的政策，妥善管理本港的自然资源，以确保可持续发展。

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

林业科学研究 Environmental Science-Ecology

CiteScore

0.90

自引率

0.00%

发文量

4834

期刊介绍： Forestry Research is a comprehensive academic journal of forestry science organized by the Chinese Academy of Forestry. The main task is to reflect the latest research results, academic papers and research reports, scientific and technological developments and information on forestry science mainly organized by the Chinese Academy of Forestry, to promote academic exchanges at home and abroad, to carry out academic discussions, to flourish forestry science, and to better serve China's forestry construction. The main contents are: forest seeds, seedling afforestation, forest plants, forest genetic breeding, tree physiology and biochemistry, forest insects, resource insects, forest pathology, forest microorganisms, forest birds and animals, forest soil, forest ecology, forest management, forest manager, forestry remote sensing, forestry biotechnology and other new technologies, new methods, and to increase the development strategy of forestry, the trend of development of disciplines, technology policies and strategies, etc., and to increase the forestry development strategy, the trend of development of disciplines, technology policies and strategies. It is suitable for scientists and technicians of forestry and related disciplines, teachers and students of colleges and universities, leaders and managers, and grassroots forestry workers.