人为土地利用对围城景观中的土壤微生物活动的影响
Meenakshi Chaurasia1, Kajal Patel2, Kottapalli Sreenivasa Rao3
1Department of Botany, University of Delhi, New Delhi-110007, India. meenakshichaurasia2@gmail.com.
Environmental monitoring and assessment
|September 20, 2023
概括
城市土地使用显著改变了土壤微生物群落和功能. 公园显示微生物活性最高,而路边种植园含有最多的营养素,这表明管理可以减轻负面影响.
科学领域:
- 土壤科学 土壤科学
- 城市生态城市生态学
- 微生物学 微生物学
背景情况:
- 土地利用变化对土壤特性,微生物群落和生态系统过程产生深远影响.
- 关于城市土地利用如何具体影响土壤微生物的组成和功能,数据有限.
研究的目的:
- 调查不同城市土地利用模式对土壤微生物参数的影响.
- 为了在五个土地使用类别中比较土壤的物理化学特性,基底呼吸 (BR),微生物生物质碳 (MBC) 和酶活动.
主要方法:
- 对比了五种对比的城市土地使用类型:农业,公园,路边种植园,街道绿地和赤裸的土地.
- 评估了土壤的物理化学特性,基底呼吸 (BR),微生物生物质碳 (MBC) 和酶活性 (例如脱酶活性 - DHA).
- 与微生物参数相关的土壤特性,以确定影响因素.
主要成果:
- 在各种土地使用类型中观察到土壤物理化学和微生物学性质的显著变化.
- 路边种植园表现出最高的营养含量 (SOC,TN,MN),而公园表现出优越的土壤功能能力 (BR,MBC,SMA,DHA).
- 街头绿色植物显示营养物质耗尽和微生物活动减少;土壤水分,可用的和SOC含量主要影响BR,MBC和酶活性.
结论:
- 城市土地使用模式显著影响土壤质量和微生物功能.
- 公园和路边种植园分别是高微生物活性和营养丰富的对比模型.
- 针对不同城市土地用途实施有针对性的管理策略可以有效地减轻对土壤健康的负面人为影响.
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