模拟森林生态系统的土壤功能
Evangelia A Koukianaki1, Maria A Lilli1, Dionissis Efstathiou1
1School of Chemical and Environmental Engineering, Technical University of Crete, 73100, Chania, Greece.
Journal of environmental management
|May 11, 2025
概括
这项研究使用了综合关键区 (1D-ICZ) 模型来模拟森林土壤功能. 该模型量化了碳捕获和植物生长限制,这对于气候变化缓解战略至关重要.
科学领域:
- 生态生态学 生态生态学
- 环境科学 环境科学
- 地球系统科学 地球系统科学
背景情况:
- 森林生态系统提供了受到气候和土地利用影响的重要服务.
- 连接地表和地下过程的生态系统建模是评估这些影响的关键.
- 长期生态系统研究 (LTER) 站点为模型校准和验证提供了宝贵的数据.
研究的目的:
- 在两个成熟的森林生态系统中模拟土壤功能,使用综合关键区 (1D-ICZ) 模型.
- 评估这些森林中植物生长和碳捕获的限制.
- 量化土壤的关键功能,包括总初级产量 (GPP) 和土壤碳库存.
主要方法:
- 使用了一维集成关键区 (1D-ICZ) 模型.
- 使用来自Zöbelboden (奥地利) 和Hyytiälä (芬兰) LTER站点的长期监测数据初始化和校准模型.
- 模拟的初级生产总量 (GPP),土壤总碳库存和土壤化学成分.
主要成果:
- 泽贝尔博登土壤的碳和含量 (82.55 tC/ha,3.76 tN/ha) 比海蒂亚拉土壤 (38.61 tC/ha,1.33 tN/ha) 高,表明有机颗粒物积累较大.
- 在两个地点,温度和光线是主要的生长限制因素;降水仅在Hyytiälä.
- 量化土壤功能:Zöbelboden GPP (15.6 tC/ha/年),土壤C库存 (82.6 tC/ha),N库存 (3.8 tN/ha),土壤CO2流量 (0.04 tC/ha/年);Hyytiälä GPP (11.6 tC/ha/年),土壤C库存 (38.6 tC/ha),N库存 (1.3 tN/ha),土壤CO2流量 (0.03 tC/ha/年).
结论:
- 1D-ICZ模型有效地模拟了森林生态系统中的土壤功能.
- 确定了限制植物生长和碳捕获的关键环境因素.
- 这些发现对于理解森林对减缓气候变化的贡献具有重要意义.
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