干旱区生态环境知识资源中心(Arid): Shifts in soil nitrogen availability and associated microbial drivers during stand development of Mongolian pine plantations

Arid

DOI	10.1002/ldr.4673
	Shifts in soil nitrogen availability and associated microbial drivers during stand development of Mongolian pine plantations
	Zhang, Yansong; Zeng, De-Hui; Wang, Guochen; Li, Xin; Lin, Guigang
通讯作者	Lin, GG
来源期刊	LAND DEGRADATION & DEVELOPMENT
ISSN	1085-3278
EISSN	1099-145X
出版年	2023
卷号	34 期号:11 页码:3156-3169
英文摘要	Afforestation on degraded lands is an effective measure to control desertification and soil erosion, but these functions are often constrained by soil nitrogen (N) availability. Moreover, soil N availability usually shifts along plantation development, yet we have a limited understanding of factors driving this shift. Here, we examined dynamics of soil N mineralization and nitrification rates along plantation development, and explored mechanisms behind these dynamics from the perspective of N-cycling microbes. We measured needle litter quality, N-hydrolyzing enzyme activity, biomass and community composition of soil microbes (phospholipid fatty acid analysis) and ammonia oxidizers (real-time quantitative PCR and high-throughput sequencing), and net N mineralization and nitrification rates along a chronosequence of Pinus sylvestris var. mongolica stands with six age classes ranging from 15- to 61-year-old in the Three-North region of China. Results showed that stand development increased net N mineralization rate by 54%, nitrate-N concentration by 106%, and nitrate-N:ammonium-N ratio from 1.09 to 2.63. Gram-positive:gram-negative bacterial ratio and beta-N-acetylglucosaminidase activity initially increased and subsequently decreased along stand development with the highest values in 40-year-old stands, while fungal:bacterial ratio showed the opposite pattern with the lowest value in 40-year-old stands. These shifts in soil microbial properties were associated with age-related changes in needle litter C:N ratio and soil pH. Net N mineralization rate was positively related to beta-N-acetylglucosaminidase activities, but not to soil microbial biomass and community composition. Net nitrification rate was negatively correlated with ammonia-oxidizing archaeal abundances and positively with ammonia-oxidizing bacterial abundances. Collectively, our results indicate that soil N availability increases and N cycling accelerates with plantation growth, and suggest that microbial N recycling driven by beta-N-acetylglucosaminidase is tightly related to soil N dynamics along stand development.
英文关键词	ammonia oxidizer nitrification nitrogen mineralization plant-soil interaction soil acid-base chemistry soil microbe
类型	Article
语种	英语
收录类别	SCI-E
WOS记录号	WOS:000950038600001
WOS关键词	AMMONIA-OXIDIZING BACTERIA ; BETA-GLUCOSAMINIDASE ACTIVITY ; TERRESTRIAL ECOSYSTEMS ; COMMUNITY STRUCTURE ; FUNGAL COMMUNITIES ; ENZYME-ACTIVITIES ; ORGANIC-CARBON ; NITRIFICATION ; PH ; MINERALIZATION
WOS类目	Environmental Sciences ; Soil Science
WOS研究方向	Environmental Sciences & Ecology ; Agriculture
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/397745
推荐引用方式 GB/T 7714	Zhang, Yansong,Zeng, De-Hui,Wang, Guochen,et al. Shifts in soil nitrogen availability and associated microbial drivers during stand development of Mongolian pine plantations[J],2023,34(11):3156-3169.
APA	Zhang, Yansong,Zeng, De-Hui,Wang, Guochen,Li, Xin,&Lin, Guigang.(2023).Shifts in soil nitrogen availability and associated microbial drivers during stand development of Mongolian pine plantations.LAND DEGRADATION & DEVELOPMENT,34(11),3156-3169.
MLA	Zhang, Yansong,et al."Shifts in soil nitrogen availability and associated microbial drivers during stand development of Mongolian pine plantations".LAND DEGRADATION & DEVELOPMENT 34.11(2023):3156-3169.