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为什么在同一气候区存在不同的湖泊类型? 来自中国北方干旱地区的案例研究

Xingyao Chen¹, Qi Liu², Yifan Fan³

¹Hulunbuir Academy of Inland Lakes in Northern Cold & Arid Areas, Hulunbuir, 021008, China.

Journal of environmental management

|October 1, 2025

概括

湖泊生态系统可以发展不同的营养循环路径,即使在相同的气候条件下,由于形状和人类影响等因素. 这项研究揭示了中国两个湖泊中明显的碳- (C-N) 循环,由温度和外部输入驱动.

科学领域:

临界技术临界技术
生态生态学生态生态学
生物地质化学生物地质化学

背景情况:

气候同质性通常被认为决定了统一的湖泊生态系统功能.
然而,异构的湖泊形态,水文连接和人为压力会导致不同的生态过程.
了解气候内区分,或共同气候生态分歧,对于湖泊管理至关重要.

研究的目的:

研究干旱/半干旱湖泊生态系统中共气候生态分歧的机制.
在类似的气候条件下,在两个不同的湖泊中比较碳- (C-N) 营养循环路径.
确定影响C-N循环分歧的关键驱动因素.

主要方法:

悬浮颗粒和沉积物的稳定同位素分析 (δ13C,δ15N).
多参数水质监测. 多参数水质监测.
结构方程建模 (SEM) 分析环境因素和营养循环之间的因果关系.

主要成果:

胡伦湖表现出异国C-N输入占主导地位,沉积物中乏的δ13C和丰富的δ15N,表明外部留和缺氧.
乌兰努尔湖显示了内部代谢调节,稳定的δ13C和缩的δ15N在沉积物中,与循环和低总相一致.
SEM确定温度和外部输入是C-N路径分歧的主要驱动因素.

结论:

湖泊的形态和连通性创造了不同的C-N自行车路径,尽管类似的干旱/半干旱气候.
温度和外部输入显著影响热力学调节和热量级流,驱动分歧.
这些发现支持干旱/半干旱湖泊生态系统的湖泊类型依赖的营养分区和双路恢复策略.

关键词:

藻类类型 versus 巨类型的湖泊碳气循环是指碳气的循环.气候区内区分生态差异化生态差异化.营养来源差异化营养来源差异化稳定的同位素追踪.结构方程建模结构方程建模

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