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土壤聚合物调节了在割草和添加下分量的微生物驱动因素
Xiuping Li1, Haiying Cui1, Shanling Wang1
1Key Laboratory of Vegetation Ecology, Institute of Grassland Science, School of Life Science, Northeast Normal University, Ministry of Education, Jilin Songnen Grassland Ecosystem National Observation and Research Station, Changchun, China.
Frontiers in microbiology
|November 17, 2025
概括
修剪和添加相互作用,改变土壤分数,特别是在较大的聚合物中. 微生物生物质和植物特征调解这些变化,影响草原生态系统.
科学领域:
- 土壤科学 土壤科学
- 微生物学 微生物学
- 生态生态学 生态生态学
背景情况:
- 微生物对生态系统中的循环至关重要,在土地利用密集的环境下.
- 土壤聚合物大小影响微生物特性和动态,使管理策略复杂化.
研究的目的:
- 为了研究割草和添加对不同聚合物大小的土壤分量的综合影响.
- 为了确定微生物和植物驱动的机制调节的动态,以响应土地管理实践.
主要方法:
- 一个8年的实地研究在草地草.
- 在大型宏聚合物 (LMA),小型宏聚合物 (SMA) 和微聚合物 (MA) 中分析分数 (不稳定Pi,不稳定Po,中度不稳定Pi,中度不稳定Po,剩余P).
- 评估微生物生物质碳与微生物生物质 (MBC:MBP) 的比例,植物丰富性,植物地下生物质 (BGB) 和性酸酶 (ALP) 活性.
主要成果:
- 修剪和P添加的相互作用在所有聚合物大小中显著增加了总.
- 在LMA (74.13%),SMA (55.01%) 和MA (9.50%) 中,可用的 (不稳定的Pi +不稳定的Po) 显著增加.
- 机制因总体规模而异:与MBC:MBP比率相关的LMA变化,与植物丰富度的SMA变化以及与BGB和ALP活动的MA变化.
结论:
- 土壤聚合物在调解微生物驱动的分数动态方面发挥着关键作用.
- 分数及其驱动因子在总体大小上的明显反应为草原循环提供了洞察力.
- 这些发现支持草原生态系统的可持续土地管理策略.
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