洪水平原恢复时间序列中的碳库存量化,沿着地中海-山区沿河走廊
Britne Clifton1, Teamrat A Ghezzehei2, Joshua H Viers3
1Environmental Systems, UC Merced, 5200 Lake Rd Merced, CA 95343.
The Science of the total environment
|June 10, 2024
概括
沿海洪水平原的恢复工作可以显著增加碳库存,特别是在生物质和土壤中. 这些发现对于更完整的全球碳预算和有效的生态系统恢复战略至关重要.
科学领域:
- 生态生态学 生态生态学
- 环境科学 环境科学
- 林业林业 林业 林业 林业
背景情况:
- 全球碳预算会计仍然不完整,缺乏水生和过渡区的数据.
- 恢复实践对碳捕获的可量化的影响是不一致的或未经记录的.
- 沿海的洪水平原是储存碳的关键生态系统,但在碳预算研究中代表性不足.
研究的目的:
- 为了研究地中海-山区沿海泛滥平原系统中的碳库存值.
- 通过包括水陆过渡生态系统,支持一个更具包容性的全球碳预算.
- 确定各种恢复处理对碳库存积累的影响.
主要方法:
- 在地表生物质,大型木材,垃圾和上层土壤形状 (5厘米) 中量化的碳储量.
- 在Cosumnes河沿线分析了23种独特的修复方法和40年来残留的老生长森林.
- 对比基于过程的,辅助的,混合的和残余森林场地类型.
主要成果:
- 总碳含量平均为129 Mg ha-1,其中生物质是最大的贡献者.
- 从2012年到2020年,生物质碳库存在处理过程中平均增加了32Mg ha-1.
- 剩余森林的平均碳储量最高 (336 Mg ha-1);以工艺为基础的恢复在生物质碳中表现出色,而辅助的恢复在土壤和垃圾碳中表现出色.
结论:
- 时间显著影响所有处理类型的碳库存积累.
- 恢复处理明显影响碳库存,因处理方法和生态系统组成部分而有所不同.
- 这些发现有助于制定更全面的全球碳预算,并为沿海生态系统中碳捕获的有效恢复策略提供信息.
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