Effects of nitrogen deposition on soil enzymatic activity and soil microbial community in a Mediterranean holm oak forest

被引：15

作者：

Zuccarini, Paolo ^{[1
,2
]}

Asensio, Dolores ^{[1
,2
]}

Sardans, Jordi ^{[1
,2
]}

Ogaya, Roma ^{[1
,2
]}

Liu, Lei ^{[3
]}

Penuelas, Josep ^{[1
,2
]}

机构：

[1] UAB, CSIC, Global Ecol Unit CREAF, Bellaterra 08913, Catalonia, Spain

[2] CREAF, Cerdanyola Del Valles 08913, Catalonia, Spain

[3] Nanjing Univ Informat Sci & Technol, Inst Ecol, Jiangsu Key Lab Agr Meteorol, Nanjing 210044, Peoples R China

来源：

GEODERMA | 2023年 / 430卷

基金：

欧洲研究理事会;

关键词：

Climate change; Mediterranean forest; Microbial community; N deposition; Phosphorus; Soil enzymes; ORGANIC-MATTER; BIOMASS; STOICHIOMETRY; ADDITIONS; FERTILIZATION; RESPIRATION; IRRIGATION; ECOSYSTEMS; INTENSITY; TEMPERATE;

D O I：

10.1016/j.geoderma.2023.116354

中图分类号：

S15 [土壤学];

学科分类号：

0903 ; 090301 ;

摘要：

Ongoing increases in global levels of nitrogen (N) deposition are predicted to continue, causing important shifts in the structure and function of ecosystems worldwide. Soil microbes and enzymes are key components of biogeochemical cycles and ecosystem functioning, so understanding their response to N deposition is crucial. We studied the effects of N addition on the activities of five extracellular enzymes and microbial biomass and composition in a mesic Mediterranean holm oak forest characterized by moderate soil N-and P-limitation. Addition of N increased photosynthetic potential of higher plants, activities of P-and C-, but not N-related enzymes, and biomass of total microbes, bacteria and fungi, and decreased ratios of fungi:bacteria. Overall, N deposition increased general biological activity of the mesic Mediterranean forest, enhanced ecosystem invest-ment in P mobilization and affected soil microbial community structure.

引用

页数：12

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