Spatio-Temporal Analysis of Land Use/Land Cover Change and the Implications on Sustainable Development Goals in the Vea Catchment of Ghana

IF 2.4 3区 环境科学与生态学 Q2 ECOLOGY Rangeland Ecology & Management Pub Date : 2024-03-20 DOI:10.1016/j.rama.2024.02.005
Gemechu Fufa Arfasa , Ebenezer Owusu-Sekyere , Dzigbodi Adzo Doke
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Abstract

Globally, land use and land cover change (LULCC) is recognized as posing a substantial environmental challenge with lasting and severe consequences. This study quantified LULCC within the Vea catchment area spanning 24 years, from 1998 to 2022. Landsat TM imagery from 1998, ETM+ imagery from 2006, and Landsat 8 OLI imagery from 2014 to 2022 were used. A supervised classification algorithm was employed to classify the LULC classes. The findings reveal a notable transformation in the Vea catchment area from 1998 to 2022, primarily by converting grassland to cropland. Agricultural activities emerged as a significant contributor to the observed LULCC trend. Notably, cropland expanded from 10.9% to 51.98% between 1998 and 2022, while grassland and mixed vegetation/forest areas decreased from 54.8% to 18.14% and 31.7% to 22.73%, respectively. These results, it is argued, underscore the potential implications for achieving the targets set by the UN's Sustainable Development Goals.

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加纳维阿集水区土地利用/土地覆盖变化的时空分析及其对可持续发展目标的影响
在全球范围内,土地利用和土地覆被变化(LULCC)被认为是一个巨大的环境挑战,会带来持久而严重的后果。本研究对维亚集水区从 1998 年到 2022 年 24 年间的土地利用和土地覆被变化进行了量化。研究使用了 1998 年的 Landsat TM 图像、2006 年的 ETM+ 图像以及 2014 年至 2022 年的 Landsat 8 OLI 图像。采用监督分类算法对 LULC 类别进行分类。研究结果表明,从 1998 年到 2022 年,维阿集水区发生了显著变化,主要是草地转变为耕地。农业活动是造成所观察到的土地利用、土地利用变化和土地利用变化趋势的重要因素。值得注意的是,在 1998 年至 2022 年期间,耕地面积从 10.9% 扩大到 51.98%,而草地和混合植被/森林面积则分别从 54.8% 减少到 18.14% 和 31.7% 减少到 22.73%。有人认为,这些结果强调了对实现联合国可持续发展目标所设定的指标的潜在影响。
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来源期刊
Rangeland Ecology & Management
Rangeland Ecology & Management 农林科学-环境科学
CiteScore
4.60
自引率
13.00%
发文量
87
审稿时长
12-24 weeks
期刊介绍: Rangeland Ecology & Management publishes all topics-including ecology, management, socioeconomic and policy-pertaining to global rangelands. The journal''s mission is to inform academics, ecosystem managers and policy makers of science-based information to promote sound rangeland stewardship. Author submissions are published in five manuscript categories: original research papers, high-profile forum topics, concept syntheses, as well as research and technical notes. Rangelands represent approximately 50% of the Earth''s land area and provision multiple ecosystem services for large human populations. This expansive and diverse land area functions as coupled human-ecological systems. Knowledge of both social and biophysical system components and their interactions represent the foundation for informed rangeland stewardship. Rangeland Ecology & Management uniquely integrates information from multiple system components to address current and pending challenges confronting global rangelands.
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