恢复保持亚洲最大的热带草原土壤高碳储量
Manan Bhan1, Chetan Misher1,2, Ankila Hiremath1
1Ashoka Trust for Research in Ecology and the Environment (ATREE), Bengaluru, Karnataka, India.
概括
巴尼草原储存了2769万的土壤有机碳 (SOC). 恢复的草原显示了最高的SOC密度,突出了通过积极的土地管理实现碳回收和气候行动的潜力.
科学领域:
- 生态生态学 生态生态学
- 土壤科学 土壤科学
- 气候变化 气候变化
背景情况:
- 草原生态系统在全球面临的威胁对生态功能,包括土壤碳储存,由于土地管理的变化.
- 巴尼草原是亚洲最大的热带草原,拥有高的生物多样性和重要的土地使用历史,但缺乏关于土壤碳库存的数据.
- 土壤有机碳 (SOC) 对草原健康和气候调节至关重要,但其在班尼地区的分布在很大程度上未得到量化.
研究的目的:
- 绘制巴尼草原上方30厘米的土壤有机碳 (SOC) 库存的地图.
- 为了评估不同土地使用-土地覆盖等级的SOC密度.
- 评估土地变化的影响,包括入侵物种和恢复,对SOC储存的影响.
主要方法:
- 将高分辨率卫星图像与来自长期监测地点的现场土壤碳数据集成.
- 在各种土地使用-土地覆盖类型中对SOC库存进行空间映射.
- 对10年土地覆盖变化的分析,以了解它们对SOC的影响.
主要成果:
- 巴尼草原目前估计在土壤中储存了2769万的碳.
- 平均SOC密度为每公119.61±3.50碳 (tC/ha),相当于其他热带草原.
- 恢复后的草原表现出最高的SOC密度 (142.72±5.72tC/ha),显示出显著的碳回收潜力.
结论:
- 班尼草原的积极管理对于最大限度地提高碳捕获效益和逆转土地退化至关重要.
- 该研究强调了理解和管理土壤碳库存对于有效的陆地气候行动的重要性.
- 研究结果为热带草原生态系统的保护战略和政策制定提供了关键数据.
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