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在热带地区推进多种生态系统服务评估:加纳巴雷克塞和奥瓦比流域的证据
Samuel Ayesu1, Olivia Agbyenyaga2, Victor Rex Barnes2
1Resource Management Support Centre, Forestry Commission, Ghana.
Heliyon
|September 23, 2024
概括
加纳的土地使用变化.
科学领域:
- 环境科学 环境科学
- 生态系统服务生态系统服务
- 热带生态学热带生态学
背景情况:
- 流域生态系统提供了对人类福祉至关重要的关键生态系统服务 (ES).
- 热带地区往往缺乏对多个ES的全面评估,它们的经济价值,以及土地利用变化的影响.
- 这项研究通过检查加纳的两个流域来解决这个差距.
研究的目的:
- 量化评估流域生态系统服务 (ES) 的经济价值.
- 评估土地使用变化对这些ES经济价值的影响.
- 为热带流域流域管理的知情保护和发展政策提供数据.
主要方法:
- 地理空间分析,跟踪土地使用变化超过三十年.
- 声明偏好方法来估计ES的经济价值.
- 从家庭和机构收集初级和二级数据.
主要成果:
- 观察到严重的森林退化和森林砍伐,定居点和耕地增加.
- 在Barekese和Owabi流域中确定了供应,监管和文化ES.
- 两个流域的总经济价值估计为707.701亿赫拉里 (144.428亿美元).
- 将森林转换为其他土地用途可以将ES的经济价值降低4%-80%.
结论:
- 生态系统服务评估对于热带地区有效的流域管理至关重要.
- 土地利用变化显著降低了生态系统服务的经济价值.
- 将土地使用变化风险纳入保护战略,包括区划和适应性管理,对于可持续的ES供应至关重要.
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