干旱区生态环境知识资源中心(Arid): Legume cover cropping and nitrogen fertilization influence soil prokaryotes and increase carbon content in dryland wheat systems

Arid

DOI	10.1016/j.agee.2024.108959
	Legume cover cropping and nitrogen fertilization influence soil prokaryotes and increase carbon content in dryland wheat systems
	Domnariu, Horia; Reardon, Catherine L.; Manning, Viola A.; Gollany, Hero T.; Trippe, Kristin M.
通讯作者	Trippe, KM
来源期刊	AGRICULTURE ECOSYSTEMS & ENVIRONMENT
ISSN	0167-8809
EISSN	1873-2305
出版年	2024
卷号	367
英文摘要	Simple rotation systems as wheat (Triticum aestivum L.)-fallow practiced in semi-arid regions are currently being transformed by replacing fallow with winter pea (Pisum sativum L.). However, there is insufficient understanding of how such diversification of plant functional groups impacts the biological and chemical soil properties which drive ecosystem services. This study investigated how diversifying rotation system coupled with nitrogen (N) fertilization impacts the diversity and activity of microbial communities and other essential soil properties such as soil organic carbon (C). Soils from a long-term field experiment (Pendleton, OR, USA) were sampled in 2021 at two depths (0-5 cm and 5-10 cm) and characterized for microbial biomass carbon (MBC), prokaryote community composition and diversity (16 S amplicon sequencing), activities of enzymes involved in C, N, phosphorous (P) and sulfur (S) cycles and soil chemical properties. The results indicated that MBC and enzyme activity were greater in the wheat-pea rotation compared to wheat-fallow, while fertilization was not a significant factor for these properties. Enzyme activities normalized by MBC showed fewer differences suggesting that the impact is mostly due to differences in MBC. Replacing fallow with pea decreased alpha diversity metrics at both depths and for both the highest and the lowest level of taxonomic hierarchy, although the effects upon phyla richness were not statistically significant. Nitrogen fertilizer decreased the Shannon index and Shannon evenness, especially in the 5-10 cm depth. While communities at the amplicon sequence variant (ASV) level were clearly separated by the rotation system, they were less separated by fertilization which distinguished communities only in the wheat-fallow system. Redundancy analysis (RDA) followed by variance partitioning analysis (VPA) indicated that soil properties explained most of the variation in the community structure at the phylum level with rotation and fertilization having no unique contribution. This suggests that the effects of rotation and fertilization are mediated through the changes these practices induce upon other soil properties. Overall, the results show that changing wheat-fallow into wheat-pea cover crop systems increases some soil health indicators while decreasing diversity which suggests that no direct coupling exists between above and belowground biodiversity.
英文关键词	Cover crops Soil organic carbon Microbial diversity Wheat production Soil health
类型	Article
语种	英语
开放获取类型	hybrid
收录类别	SCI-E
WOS记录号	WOS:001210262500001
WOS关键词	MICROBIAL BIOMASS ; ENZYME-ACTIVITIES ; ORGANIC-MATTER ; DIVERSITY ; FALLOW ; BIODIVERSITY ; COMMUNITIES ; ROTATIONS ; INTENSITY ; IMPACT
WOS类目	Agriculture, Multidisciplinary ; Ecology ; Environmental Sciences
WOS研究方向	Agriculture ; Environmental Sciences & Ecology
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/402703
推荐引用方式 GB/T 7714	Domnariu, Horia,Reardon, Catherine L.,Manning, Viola A.,et al. Legume cover cropping and nitrogen fertilization influence soil prokaryotes and increase carbon content in dryland wheat systems[J],2024,367.
APA	Domnariu, Horia,Reardon, Catherine L.,Manning, Viola A.,Gollany, Hero T.,&Trippe, Kristin M..(2024).Legume cover cropping and nitrogen fertilization influence soil prokaryotes and increase carbon content in dryland wheat systems.AGRICULTURE ECOSYSTEMS & ENVIRONMENT,367.
MLA	Domnariu, Horia,et al."Legume cover cropping and nitrogen fertilization influence soil prokaryotes and increase carbon content in dryland wheat systems".AGRICULTURE ECOSYSTEMS & ENVIRONMENT 367(2024).