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Xu Chen¹, Suzanne McGowan², Xianyu Huang¹

¹Hubei Key Laboratory of Regional Ecology and Environmental Change, School of Geography and Information Engineering, China University of Geosciences, Wuhan 430078, PR China; Observation and Research Station of Shenongjia Dajiuhu Wetland Earth Critical Zone, Ministry of Natural Resources, Wuhan 430078, PR China.

|July 12, 2025

概括

由于大气中的酸沉积,中国南部的泥炭土酸化在20世纪50年代后加速,超过了气候变暖的影响. 这些亚热带泥炭地表现出酸性化延迟恢复,影响生态系统管理.

科学领域:

古代气候学是一种古气候学.
环境科学环境科学
生态生态学生态生态学

背景情况:

泥炭泥土的酸性化比湖泊的酸性化研究较少.
原子组合是水生环境条件的敏感指标.
中国南部的亚热带泥炭地面临着独特的环境压力.

研究的目的:

在过去200年中,研究中国南部的泥炭地酸化趋势.
为泥炭地开发基于藻的pH转移功能.
评估气候变暖与酸性沉积对泥炭地pH的影响.

主要方法:

分析了来自114个表面样本和2个泥炭核心的藻组合.
利用排序分析来确定关键的环境驱动因素.
应用了一种加权平均模型,用于pH推断,其中包括容忍减重和反向减重.
使用210Pb方法测定泥炭芯的日期.

主要成果:

水的pH值是影响藻分布的主要因素.
在20世纪50年代之前,泥炭地表现出转向较少酸性条件的转变,这归因于变暖.
耐酸藻在20世纪50年代后扩大,表明酸沉积影响增加.
在遥远的泥炭地观察到类似的酸化趋势,这表明这是一个区域问题.
尽管沉积量减少,但推断pH值在2010年后继续下降,显示恢复缓慢.

结论:

泥土的酸性化是一个广泛的现象,在1950年代后的亚热带南中国.
大气中的酸沉积对泥炭地生态系统产生了重大影响.
头水泥地表现出人为酸性化延迟恢复.
调查结果为环境变化下的泥炭地提供了可持续管理的信息.

关键词:

酸性化是指酸性化的过程.气候变暖气候变暖气候变暖泥炭的环境泥炭的环境的pH值重建的重建.泥炭沉积物的泥炭沉积物

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