气候变化领域集成服务门户(CCPortal): Responses of community traits and soil characteristics of Achnatherum inebrians-type degraded grassland to grazing systems in alpine meadows on the Qinghai-Tibet Plateau

CCPortal

DOI	10.3389/fpls.2023.1270304
	Responses of community traits and soil characteristics of Achnatherum inebrians-type degraded grassland to grazing systems in alpine meadows on the Qinghai-Tibet Plateau
	Chen, Yanzhu; Xu, Changlin; Ma, Kaikai; Hou, Qingqing; Yu, Xiaojun
发表日期	2023
ISSN	1664-462X
卷号	14
英文摘要	Introduction: Scientific grazing management is of great significance for the ecological health and sustainable use of alpine meadows.Methods: To explore appropriate management methods of alpine grasslands of the Qinghai-Tibet Plateau degraded by Achnatherum inebrians (Hance) Keng ex Tzvele presence, we studied the effects of different grazing systems on the A. inebrians population, grassland vegetation community traits, soil characteristics and soil microbial community structure for cold- season grazing plus supplementary feeding pasture (CSF) and four-season open public pasture (FOP) in Tianzhu County, Gansu Province.Results: Compared with FOP, the CSF site showed significantly inhibited reproduction of A. inebrians, especially the crown width, seed yield and number of reproductive branches per plant were as high as 50%, significantly increased the aboveground biomass of edible forage and soil water content by 57% and 43-55%, better soil nutrients, and significantly reduced soil bulk density by 10- 29%. Different grazing systems affected the composition and diversity of soil microbial communities, with a greater effect on fungi than on bacterial flora. The most abundant phyla of bacteria and fungi were Proteobacteria and Ascomycota for CSF (by 30-38% and 24-28%) and for FOP (by 67-70% and 68-73%), and the relative abundance and species of bacterial and fungal genera were greater for CSF than FOP. The alpha-diversity indexes of fungi were improved, and the beta-diversity of fungi was significant difference between CSF and FOP. However, the grazing utilization time was prolonged in FOP, which reduced the diversity and abundance of soil bacteria and increased soil spatial heterogeneity. The use of A. inebrians-type degraded grassland in the cold season, and as a winter supplementary feeding and resting ground, could effectively inhibit expansion of A. inebrians, promote edible forage growth, enhance grassland productivity and community stability, and improve soil structure.Discussion: The results guide healthy and sustainable utilization of A. inebrians-type degraded grassland in the Qinghai-Tibet Plateau.
关键词	grazing system Achnatherum inebrians plant communities soil microbial communities alpine meadows
英文关键词	DIVERSITY
WOS研究方向	Plant Sciences
WOS记录号	WOS:001085967000001
来源期刊	FRONTIERS IN PLANT SCIENCE
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/283229
作者单位	Gansu Agricultural University
推荐引用方式 GB/T 7714	Chen, Yanzhu,Xu, Changlin,Ma, Kaikai,et al. Responses of community traits and soil characteristics of Achnatherum inebrians-type degraded grassland to grazing systems in alpine meadows on the Qinghai-Tibet Plateau[J],2023,14.
APA	Chen, Yanzhu,Xu, Changlin,Ma, Kaikai,Hou, Qingqing,&Yu, Xiaojun.(2023).Responses of community traits and soil characteristics of Achnatherum inebrians-type degraded grassland to grazing systems in alpine meadows on the Qinghai-Tibet Plateau.FRONTIERS IN PLANT SCIENCE,14.
MLA	Chen, Yanzhu,et al."Responses of community traits and soil characteristics of Achnatherum inebrians-type degraded grassland to grazing systems in alpine meadows on the Qinghai-Tibet Plateau".FRONTIERS IN PLANT SCIENCE 14(2023).