在西北部喜马拉雅山的不同土地利用系统中的土壤微生物和酶活动
Yasir Hanif Mir1, Mumtaz Ahmad Ganie1, Tajamul Islam Shah2
1Division of Soil Science & Agricultural Chemistry, Sher-e-Kashmir University of Agricultural Sciences and Technology of Kashmir, Wadura, Jammu and Kashmir, India.
PeerJ
|October 2, 2023
概括
在喜马拉雅山脉的土地转型显著降低了土壤微生物活动和酶功能,影响了土壤健康. 限制土地使用变化对于保护土壤微生物群多样性和自然资源至关重要.
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:
- 土壤微生物活动 (SMA) 和微生物群落 (MC) 组成对于碳循环和营养循环至关重要.
- 了解微生物组的响应能力对于解决喜马拉雅山脉等生态系统的可持续性挑战至关重要.
研究的目的:
- 评估土地转型对西北部喜马拉雅山脉土壤微生物和酶活动的影响.
- 评估不同土地利用系统 (LUS) 如何影响土壤质量和微生物群多样性.
主要方法:
- 从五个LUS (森林,牧场,果,沙夫兰,米油种) 收集了土壤样本,深度高达90厘米.
- 测量了脱酶,酸盐酶,酸盐酶,FDA酸盐酶活动,以及细菌,真菌和行为菌素的数量.
- 利用主要成分分析和相关性来分析微生物/酶活动和物理化学属性之间的关系.
主要成果:
- 在LUS中观察到酶活动和微生物计数的显著差异,森林土壤显示最高,油种土壤显示最低.
- 酶活性和微生物数量随着土壤深度的下降而下降,并按照以下顺序进行:森林 > 牧场 > 果 > 沙弗朗 > 米油种.
- 土地转化,特别是米油菜种系统,导致酶活性 (高达35%) 和微生物数量 (高达62.91%的深度) 大幅减少.
结论:
- 在喜马拉雅山脉的土地转型会对土壤微生物群多样性和酶活动产生负面影响.
- 油油种植和增加土壤深度显著耗尽了土壤微生物群落.
- 建议限制土地使用变化,以防止微生物群的枯竭,并确保土壤健康的可持续性.
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