气候变化领域集成服务门户(CCPortal): Effects of grazing in different intensities and 10-year grazing exclusion on soil bacterial community composition and interaction complexity in alpine grasslands of the Qinghai-Tibet Plateau

CCPortal

DOI	10.1002/ldr.5059
	Effects of grazing in different intensities and 10-year grazing exclusion on soil bacterial community composition and interaction complexity in alpine grasslands of the Qinghai-Tibet Plateau
	Qi, Xiangning; Chen, Xianke; Zhou, Xiaorong; Qian, Zhi; Zhou, Hanchang; Zhuang, Guoqiang; Ma, Anzhou
发表日期	2024
ISSN	1085-3278
EISSN	1099-145X
英文摘要	To decrease the detrimental consequences of overgrazing on the sustainability of grassland ecosystems, many countries have developed policies on grazing exclusions. However, compared with grazing, how grazing exclusion modifies soil bacterial community and the associated environmental drivers is inadequately understood. Here, we studied the effects of grazing in different intensities (no grazing, light, moderate, and heavy grazing) and 10 years' grazing exclusion on soil bacteria community and associated environmental factors in the grassland of the Qinghai-Tibet Plateau. The results showed significant changes in soil bacterial composition among all the treatments. After 10 years' grazing exclusion, the composition of the bacterial community rather than bacterial diversity was significantly different from that in grassland without grazing treatment. Under grazing exclusion, bacterial community composition was regulated by the total nitrogen and nitrate nitrogen. Grazing treatments decreased the complexity of the bacterial co-occurrence network, but 10 years' grazing exclusion increased the complexity. This study found that grazing in different intensities substantially affected bacterial community structure and diversity, but 10 years' grazing exclusion hardly alleviated the historical grazing effects on the bacterial community structure. The findings of the study extended the understanding of how bacterial communities in grasslands respond to grazing in different intensities and grazing exclusion, providing a crucial scientific foundation for evaluating sustainable grazing management.
关键词	alpine grassland bacterial community structure co-occurrence network grazing exclusion grazing intensity structural equation model
英文关键词	MICROBIAL COMMUNITY; CARBON; PHOSPHORUS; DIVERSITY; SEQUENCES; IMPACT; INPUTS; PLANTS
WOS研究方向	Environmental Sciences ; Soil Science
WOS记录号	WOS:001159153000001
来源期刊	LAND DEGRADATION & DEVELOPMENT
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/283346
作者单位	Chinese Academy of Sciences; Research Center for Eco-Environmental Sciences (RCEES); Chinese Academy of Sciences; University of Chinese Academy of Sciences, CAS; Chinese Academy of Sciences; University of Chinese Academy of Sciences, CAS
推荐引用方式 GB/T 7714	Qi, Xiangning,Chen, Xianke,Zhou, Xiaorong,et al. Effects of grazing in different intensities and 10-year grazing exclusion on soil bacterial community composition and interaction complexity in alpine grasslands of the Qinghai-Tibet Plateau[J],2024.
APA	Qi, Xiangning.,Chen, Xianke.,Zhou, Xiaorong.,Qian, Zhi.,Zhou, Hanchang.,...&Ma, Anzhou.(2024).Effects of grazing in different intensities and 10-year grazing exclusion on soil bacterial community composition and interaction complexity in alpine grasslands of the Qinghai-Tibet Plateau.LAND DEGRADATION & DEVELOPMENT.
MLA	Qi, Xiangning,et al."Effects of grazing in different intensities and 10-year grazing exclusion on soil bacterial community composition and interaction complexity in alpine grasslands of the Qinghai-Tibet Plateau".LAND DEGRADATION & DEVELOPMENT (2024).