地表生产力塑造了中国各地活跃的土壤微生物群
Jieying Wang1,2,3,4, Fazhu Zhao1,2,4,5,6,7, Liyuan He8,9
1Shaanxi Key Laboratory of Earth Surface System and Environmental Carrying Capacity, Northwest University, Xi'an, Shaanxi, China.
Global change biology
|September 16, 2025
概括
活跃的土壤微生物群,占所有微生物的不到2%,主要是由地面生产力驱动的. 森林土壤拥有最活跃的微生物,而耕地拥有最少的微生物,影响生态系统功能.
科学领域:
- 土壤微生物学 土壤微生物学
- 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:
- 土壤微生物对生态系统功能至关重要,但只有很小一部分积极参与其中.
- 了解活跃的土壤微生物群的空间分布对于预测生态系统对环境变化的反应至关重要.
研究的目的:
- 调查中国主要生物群中活跃土壤微生物群的比例和空间分布.
- 确定塑造活跃土壤微生物群的关键环境驱动因素.
主要方法:
- 在中国601个地点进行标准化土壤采样.
- 使用5 - - 2,3 - 丁醇四化 (CTC) 染色和流动细胞计量,量化活跃的土壤微生物群比例.
- 对影响活跃土壤微生物群的环境因素的分析.
主要成果:
- 平均而言,所有地点的土壤微生物活跃率不到2%.
- 森林生态系统表现出活跃土壤微生物群的比例最高 (>2%),而耕地表现出活跃土壤微生物群的比例最低 (<1%).
- 在地面上的生产力,特别是在更温暖,更潮湿的热带地区,是活跃土壤微生物群变化的主要决定因素.
结论:
- 在地面上的生产力是空间结构活跃土壤微生物群的关键因素.
- 全球生产力较低的环境可能会导致活跃的土壤微生物群的显著下降.
- 活跃土壤微生物组的减少可能会损害生态系统功能和生物地球化学循环,特别是在气候变化下.
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