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碳封存模拟研究基于在柳州河流盆地的SWAT模型

Mingjie Yang^1,2, Peng Zhang^1,2, Yuanhong Liu³

¹School of Hydraulic Engineering, Wanjiang University of Technology, Ma'anshan 243031, China.

Integrated environmental assessment and management

|March 2, 2026

概括

生态系统中的水和碳循环是相互关联的. 这项研究使用SWAT模型来分析水文过程如何影响植被动态和碳捕获,发现随着时间的推移提高了生产力.

科学领域:

生态生态学生态生态学
水文学的水文学
生物地质化学生物地质化学

背景情况:

陆地生态系统表现出水和碳循环之间的密切联系.
现有的水碳合研究往往强调测量技术和生态系统模型,不太关注对植被动态的水文影响.

研究的目的:

研究陆地生态系统中水文过程和植被动态之间的复杂联系.
通过将水文数据与光使用效率模型相结合,分析碳捕集的时空分布.
通过在宜河流域的案例研究,增强对水-碳合的理解.

主要方法:

利用土壤和水分析工具 (SWAT) 模型来模拟罗河流域的水文循环.
在SWAT模型中修改了水文响应单位 (HRU) 结构,以模拟每个HRU的实际 (E) 和潜在 (E0) 蒸发透气.
应用光使用效率 (LUE) 模型,整合E和E0数据来确定碳捕获 (GPP和NPP) 特性.

主要成果:

观察到年平均毛初级生产率 (GPP) 和净初级生产率 (NPP) 的显著上升趋势,NPP略低于GPP.
与下游相比,上游地区的年平均GPP和NPP较高,与植被类型和蒸发转化模式相关.
确定夏天是GPP和NPP积累的高峰季节,其特点是高蒸发转化和碳捕获;注意到随着时间的推移,春天的贡献越来越大.

结论:

水文过程极大地影响了陆地生态系统中的植被动态和碳捕获.
修改后的SWAT模型有效地模拟了水与碳的联系,为GPP和核电站的分配提供了洞察力.
气候变化和植被恢复正在改变季节性碳捕获模式,春季贡献的增加可能会缩小夏季-春季的差距.

关键词:

灯光使用效率模型土壤和水资源分析工具柳州河流盆地柳州河流盆地总初级生产率的总初级生产率净初级生产率净初级生产率

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