Significant dose effects of fertilizers on soil diazotrophic diversity, community composition, and assembly processes in a long-term paddy field fertilization experiment

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	Significant dose effects of fertilizers on soil diazotrophic diversity, community composition, and assembly processes in a long-term paddy field fertilization experiment
	Wang, Jianlei; Li, Qingkang; Shen, Congcong; Yang, Fengting; Wang, Jichen; Ge, Yuan
刊名	LAND DEGRADATION & DEVELOPMENT
	2020-01-15
卷号	32 期号:1 页码:420-429
关键词	assembly processes diazotroph fertilizer doses and ratios long-term fertilization
ISSN号	1085-3278
英文摘要	Although diazotrophs are major participants in biological nitrogen fixation (BNF) processes, the variations in community structure and assembly processes in response to long-term fertilization with different fertilizer application are still ambiguous, especially under various doses with balance or not. Using nifH amplicon sequencing, we investigated the soil diazotrophic communities in a paddy field which received 20-year fertilization including control (CK), balanced fertilization (three doses of nitrogen (N), phosphorus (P), and potassium (K) at same ratio (NPK, 2(NPK), and 3(NPK)), unbalanced fertilization (three ratios, (2 N)PK, N(2P)K, and NP(2K)), and manure (M). Our results showed that the diazotrophic diversity increased with the long-term fertilization, but it was tapering-off with doses increment. However, the community dissimilarities increased with fertilizer doses. These variations were attributed to the trade-off between the variation of soil pH and nutrients. The increasing of fertilizer doses induced the transformation of community assembly processes, which changed from mainly dominated by deterministic processes in CK, NPK, NP(2K) and M to stochastic processes in the other treatments. Our findings suggest that the long-term fertilization, especially different fertilizer doses, strongly affect soil diazotrophic diversity, community structure, and assembly processes, which could help to improve the sustainable agricultural management in the future.
内容类型	期刊论文
源URL	[http://ir.rcees.ac.cn/handle/311016/44447]
专题	生态环境研究中心_城市与区域生态国家重点实验室
推荐引用方式 GB/T 7714	Wang, Jianlei,Li, Qingkang,Shen, Congcong,et al. Significant dose effects of fertilizers on soil diazotrophic diversity, community composition, and assembly processes in a long-term paddy field fertilization experiment[J]. LAND DEGRADATION & DEVELOPMENT,2020,32(1):420-429.
APA	Wang, Jianlei,Li, Qingkang,Shen, Congcong,Yang, Fengting,Wang, Jichen,&Ge, Yuan.(2020).Significant dose effects of fertilizers on soil diazotrophic diversity, community composition, and assembly processes in a long-term paddy field fertilization experiment.LAND DEGRADATION & DEVELOPMENT,32(1),420-429.
MLA	Wang, Jianlei,et al."Significant dose effects of fertilizers on soil diazotrophic diversity, community composition, and assembly processes in a long-term paddy field fertilization experiment".LAND DEGRADATION & DEVELOPMENT 32.1(2020):420-429.