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评估生态系统服务价值的变化,以应对马拉维的土地使用和土地覆盖动态

Kennedy Sones Nazombe¹, Odala Nambazo², Principal Mdolo³

¹Department of Land and Water Resources, Faculty of Life Sciences and Natural Resources, Natural Resources College, Lilongwe University of Agriculture and Natural Resources, Lilongwe, Malawi. kennedynazombe@yahoo.com.

Environmental monitoring and assessment

|July 17, 2024

概括

马拉维的土地利用变化对生态系统服务价值 (ESV) 产生了重大影响. 尽管农田扩张增加了供应服务,但由于森林和湿地等自然生态系统的损失,ESV总体下降.

科学领域:

环境科学环境科学
生态生态学生态生态学
保护科学保护科学

背景情况:

土地利用和土地覆盖 (LULC) 变化是由社会经济因素驱动的,并对生态系统服务产生重大影响.
马拉维面临着关于LULC变化对生态系统服务价值 (ESV) 的全国范围影响的关键数据缺口.

研究的目的:

对马拉维的LULC变化进行第一个全面的国家分析.
评估从2001年到2022年对生态系统服务价值 (ESV) 的影响.

主要方法:

利用效益转移方法来评估生态系统服务.
使用ArcGIS 10.6软件进行LULC变化和ESV的空间分析.
分析了特定LULC类别 (草地,耕地,森林,湿地等) 的变化. 和相应的ESV影响.

主要成果:

观察到显著的LULC转变:草原 (+52%),耕地 (+1%),城市地区 (+23.2%) 增加;森林,灌木,湿地和水体减少.
总ESV下降了5.8% (2001年的90870亿美元到2022年的8560亿美元).
提供服务增加了0.5% (由耕地扩张驱动),而监管,支持和文化服务下降了 (分别为12.2%,3.16%,3.22%) 由于自然生态系统的损失.

结论:

马拉维LULC的变化导致了马拉维整体ESV的净减少.
保护和恢复自然生态系统对于增强ESV至关重要.
环境政策必须优先考虑自然生态系统保护,以减轻对生态系统服务的负面影响.

关键词:

福利转移的利益转移是什么生物群是生物群的组成部分.生态系统服务估值评估土地使用和土地覆盖面的变化.马拉维马拉维马拉维马拉维自然资本自然资本

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