在美国内布拉斯加州的保护土地上绘制碳储存和排放的空间动态
Bhavana Sreekumar1, Jahangeer Jahangeer1, Zhenghong Tang2
1Community and Regional Planning Program, University of Nebraska-Lincoln, Lincoln, NE, 68588, USA.
Environmental monitoring and assessment
|November 10, 2025
概括
尼布拉斯加尼布拉斯加尼布拉斯加州
科学领域:
- 生态系统科学 生态系统科学
- 环境科学环境科学
- 保护科学 保护科学
背景情况:
- 美国淡水生态系统中碳动态的空间显式数据有限.
- 保护区的土地对于碳捕获至关重要.
- 了解不同类型的保护土地中的碳储存至关重要.
研究的目的:
- 评估内布拉斯加州48,363个保护区的碳储存和封存情况.
- 将InVEST模型与洪水数据相结合,以便进行准确的碳评估.
- 确定影响碳密度和分布在保护区土地上的因素.
主要方法:
- 使用InVEST碳模型与特定地点的洪水频率数据集成.
- 评估了各种保护土地类型的碳动态,包括CRP,WMA,WRP和WPA.
- 进行热点分析以确定碳密度较高的地区.
主要成果:
- 内布拉斯加州的保护土地储存大量的碳,湿地管理区 (WMA),湿地保护区计划 (WRP) 和水禽生产区 (WPA) 显示的密度 (101-103 MgC/ha) 比保护区计划 (CRP) 站点 (70.7 MgC/ha) 高.
- 森林湿地,新兴草生湿地和经常被洪水淹没的树叶森林 (>75%) 的碳密度更高.
- 频繁的洪水和特定的土地管理做法与碳积累的增加有关,这些地点充当净碳汇.
结论:
- 内布拉斯加州的保护区是重要的碳汇,突出了它们的生态和政策价值.
- 在已识别的碳密度高的热点地区,可以优先考虑有针对性的保护和恢复工作.
- 将水文数据与碳模型相结合,可以提高对生态系统碳动态的理解.
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