干旱区生态环境知识资源中心(Arid): Nitrogen enrichment affects soil enzymatic stoichiometry via soil acidification in arid and hot land

Arid

DOI	10.1016/j.pedobi.2020.150663
	Nitrogen enrichment affects soil enzymatic stoichiometry via soil acidification in arid and hot land
	Yan, Bangguo; Sun, Yi; He, Guangxiong; He, Runlian; Zhang, Mengyin; Fang, Haidong; Shi, Liangtao
通讯作者	Yan, BG ; Fang, HD ; Shi, LT
来源期刊	PEDOBIOLOGIA
ISSN	0031-4056
EISSN	1873-1511
出版年	2020
卷号	81-82
英文摘要	Soil enzymatic stoichiometry reflects the patterns of soil microbial resource allocation for the acquisition of nutrients from different forms of soil organic matter. Nitrogen enrichment derived from human activities greatly affects soil biological properties and chemical properties. However, the mechanism for changing soil enzymatic stoichiometry due to nitrogen enrichment remains unclear. We established a factorial field experiment in an arid-hot valley to investigate the effects of nitrogen addition and plant species on the enzymatic stoichiometries for leucine aminopeptidase (LAP), acid phosphatase (AP), beta-1,4-glucosidase (BG) and beta-N-acetyl glucosaminidase (NAG). We found that nitrogen addition consistently reduced LAP activities but elevated AP activities beneath different grass species. Plant species had no effects on soil enzymatic stoichiometries although it significantly influenced the absolute values of soil enzyme activities. Nitrogen addition increased ln(BG):ln(LAP), but decreased ln(BG):ln(AP), ln(LAP):ln(NAG) and ln(LAP):ln(AP). Furthermore, by using structure equation modelling analyses, we found that the effects of N addition on enzymatic stoichiometries were mediated by soil acidification and microbial community structures. Our findings highlight that soil acidification alters microbial community structures and the patterns of microbial resource allocation for nutrient acquisition, both of which in turn play important roles in shaping soil enzymatic stoichiometry under the scenario of nitrogen enrichment.
英文关键词	Extracellular enzyme Stoichiometry pH Arid and hot valley
类型	Article
语种	英语
收录类别	SCI-E
WOS记录号	WOS:000571491600002
WOS关键词	BELOW-GROUND COMMUNITIES ; ECOENZYMATIC STOICHIOMETRY ; MICROBIAL COMMUNITIES ; NUTRIENT ACQUISITION ; PLANT ; AVAILABILITY ; DEPOSITION ; CARBON ; BACTERIAL ; BIOMASS
WOS类目	Ecology ; 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/2XILL650/326414
作者单位	[Yan, Bangguo; Sun, Yi; He, Guangxiong; He, Runlian; Zhang, Mengyin; Fang, Haidong; Shi, Liangtao] Yunnan Acad Agr Sci, Inst Trop Ecoagr, Yuanmou 651300, Yunnan, Peoples R China; [Yan, Bangguo; Sun, Yi; He, Guangxiong; He, Runlian; Zhang, Mengyin; Fang, Haidong; Shi, Liangtao] Yuanmou Dry Hot Valley Bot Garden, Yuanmou 651300, Yunnan, Peoples R China
推荐引用方式 GB/T 7714	Yan, Bangguo,Sun, Yi,He, Guangxiong,et al. Nitrogen enrichment affects soil enzymatic stoichiometry via soil acidification in arid and hot land[J],2020,81-82.
APA	Yan, Bangguo.,Sun, Yi.,He, Guangxiong.,He, Runlian.,Zhang, Mengyin.,...&Shi, Liangtao.(2020).Nitrogen enrichment affects soil enzymatic stoichiometry via soil acidification in arid and hot land.PEDOBIOLOGIA,81-82.
MLA	Yan, Bangguo,et al."Nitrogen enrichment affects soil enzymatic stoichiometry via soil acidification in arid and hot land".PEDOBIOLOGIA 81-82(2020).