生态系统多功能性和土壤微生物群落作为对阿尔卑斯山退化草原生态恢复的反应
Xiangyang Shu1, Weijia Liu2, Yufu Hu1
1College of Resources, Sichuan Agricultural University, Chengdu, China.
Frontiers in plant science
|August 18, 2023
概括
种植灌木和草一起 (SG) 显著提高生态系统的多功能性和微生物的稳定性在退化的高山草原. 这种结合的方法,与单一种植不同,增强了土壤功能和细菌多样性,以有效地恢复草原.
科学领域:
- 生态恢复 生态恢复
- 微生物生态学 微生物生态学
- 生态系统的运作 生态系统的运作
背景情况:
- 微生物群落和生态系统功能的环境依赖性需要了解恢复影响.
- 不同的恢复策略对微生物群落和生态系统多功能性的长期影响尚不清楚.
研究的目的:
- 研究生态系统多功能性和微生物群落 (多样性,组成,共发生网络) 对退化的高山草原中不同恢复模式的反应.
- 评估混合草 (MG),单独灌木 (SA) 和灌木加混合草 (SG) 与对照 (CK) 的有效性.
主要方法:
- 一个长达14年的长期实验,比较了四种治疗方法:CK (对照),MG,SA和SG.
- 评估土壤营养含量,酶活动和微生物生物质.
- 分析微生物群落的多样性,组成和共发生网络稳定性 (细菌和真菌).
- 随机森林建模以确定生态系统多功能性的驱动因素.
主要成果:
- 与CK,MG和SA相比,SG治疗显示出明显更高的个人功能和多功能指数.
- 与CK相比,MG,SA和SG治疗分别增加了0.57,0.23和0.76的多功能指数.
- 细菌的α多样性和组成,而不是真菌,是生态系统多功能性的关键驱动因素.
- MG和SG治疗增强了细菌网络的稳定性,比真菌网络更强烈地与多功能性相关.
结论:
- 种植灌木和草一起 (SG) 是一个高效的恢复模式,退化的高山草原.
- 这种综合方法显著提高了生态系统的多功能性,微生物多样性和网络稳定性.
- 恢复策略对微生物群落及其在生态系统运行中的作用产生重大影响.
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