种植草加强了土壤微生物和酶活动之间的关系,并恢复了退化的草原中的土壤功能
Minghui Zhang1,2, Zhuo Li1,2, Bin Zhang1,2
1Key Laboratory of Vegetation Ecology, Ministry of Education, Institute of Grassland Science, Northeast Normal University, Changchun, China.
Frontiers in microbiology
|March 1, 2024
概括
料养殖可以恢复退化的草原,但它的有效性取决于最初的退化水平. 在中度退化的土壤中种植中国 (Leymus chinensis) 改善了土壤功能,特别是循环.
科学领域:
- 生态生态学 生态生态学
- 土壤科学 土壤科学
- 微生物学 微生物学
背景情况:
- 料养殖是恢复退化的草原和土壤功能的关键策略.
- 土壤微生物群落结构和细胞外酶活性 (EEA) 是草原恢复的关键指标.
- 料培养对土壤微生物-EEA相互作用的影响及其对降解状态的依赖性尚未得到充分理解.
研究的目的:
- 调查Leymus chinensis (一种主要的草) 培养对不同退化状态的草原中的土壤微生物群落和细胞外酶活性 (EEA) 的影响.
- 为了确定料养殖在恢复土壤功能的有效性是否受草原退化程度的影响.
主要方法:
- 在农草原的四个降解级别 (严重,中度,轻度,非降解) 的土壤中,使用中国 (Leymus chinensis) 进行了种植实验.
- 测量了土壤微生物多样性和EEAs.
- 使用FUNGuild预测的土壤微生物功能群.
主要成果:
- 在L.I.L.里面, chinensis文化显著促进了土壤细菌的α多样性和EEAs,仅在中度退化的土壤中.
- 草培养导致化学异质变性和酸盐降低微生物群体减少,但在10周后 (N) 固定群体增加.
- EEA与酸盐降低/N固定微生物群体之间的正相关性被L.强化. chinensis文化,这表明增强了土壤N循环.
结论:
- 料培养,特别是与L. ,可以增强土壤功能,特别是N循环,在退化的草原.
- 通过料养殖恢复草原的成功在很大程度上取决于草原最初的退化状态.
- 选择适合草原恢复的植物种类需要仔细考虑它们对微生物功能群体和土壤整体功能的影响.
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