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Interactive effects of nitrogen and water addition on soil microbial resource limitation in a temperate desert shrubland

文献类型：期刊论文

作者Li, Jiwei1,4,5; Xie, Jiangbo2,3; Zhang, Yu4,5; Dong, Lingbo1; Shangguan, Zhouping1,4,5; Deng, Lei1,4,5
刊名PLANT AND SOIL
出版日期2022-03-25
页码18
ISSN号0032-079X
关键词Desert ecosystems Extracellular enzyme activity Nitrogen addition Increased precipitation Microbial resource limitation
DOI10.1007/s11104-022-05371-y
通讯作者Deng, Lei(leideng@ms.iswc.ac.cn)
英文摘要Aims Soil microorganisms play critical roles in regulating soil biogeochemical cycles, but their growth and metabolic activities are usually limited by resource availability, especially in water-limited desert ecosystems under global change. However, there is little information on the interactions of nitrogen (N) enrichment and increased precipitation on soil microbial resource limitation in desert-shrubland ecosystems. Methods This study examined the effects of longterm (9 years) N and water (W) additions (i.e., 5 g N-m(-2)-year(-1) and 30% ambient precipitation increase, and their combination) on the activities of soil extracellular enzymes (EEAs) and soil microbial resource limitation in the Gurbantunggut Desert in northwestern China. Results N and W addition significantly enhanced soil microbial carbon (C) and phosphorus (P)-acquiring enzymes, and significantly induced microbial growth from N to P limitation in the desert ecosystem. Furthermore, W addition and simultaneous addition of N and W alleviated C limitation; however, N addition alone increased the microbial C limitation. Thus, the interaction alleviated the negative impact of N addition on soil microbial C limitation, but increased the microbial P limitation. Soil microbial C limitation was primarily driven by the soil available N/P ratio, whereas the soil microbial P limitation was primarily controlled by soil total N/P ratio. Conclusions The influence of either N or W addition on the biogeochemical processes in desert ecosystems can be altered by their concurrent addition. Overall, our findings showed that increased precipitation was more effective than N accumulation in modifying microbial metabolism in desert ecosystems, and this effect was co-regulated by the relative contents of N and P in the soil. These findings can aid in the prediction of terrestrial C and nutrient flows under global change.
WOS关键词EXTRACELLULAR ENZYME-ACTIVITY ; CARBON USE EFFICIENCY ; ECOENZYMATIC STOICHIOMETRY ; COMMUNITY COMPOSITION ; NUTRIENT ACQUISITION ; EXTRACTION METHOD ; SEMIARID STEPPE ; CLIMATE-CHANGE ; N DEPOSITION ; PRECIPITATION
资助项目National Natural Science Foundation of China[41730638] ; Strategic Priority Research Program of the Chinese Academy of Sciences[XDA23070201] ; Funding of Special Support Plan of Young Talents Project of Shaanxi Province ; National Forestry and Grassland Administration in China[20201326015]
WOS研究方向Agriculture ; Plant Sciences
语种英语
出版者SPRINGER
WOS记录号WOS:000773173400001
资助机构National Natural Science Foundation of China ; Strategic Priority Research Program of the Chinese Academy of Sciences ; Funding of Special Support Plan of Young Talents Project of Shaanxi Province ; National Forestry and Grassland Administration in China
源URL[http://ir.igsnrr.ac.cn/handle/311030/173500]  
专题中国科学院地理科学与资源研究所
通讯作者Deng, Lei
作者单位1.Northwest A&F Univ, Inst Soil & Water Conservat, Yangling 712100, Shaanxi, Peoples R China
2.Chinese Acad Sci, Xinjiang Inst Ecol & Geog, State Key Lab Desert & Oasis Ecol, South Beijing Rd, Urumqi 830011, Xinjiang, Peoples R China
3.Zhejiang A&F Univ, State Key Lab Subtrop Silviculture, Linan 311300, Peoples R China
4.Chinese Acad Sci & Minist Water Resources, Inst Soil & Water Conservat, State Key Lab Soil Eros & Dryland Farming Loess P, 26 Xinong Rd, Yangling 712100, Shaanxi, Peoples R China
5.Univ Chinese Acad Sci, Beijing 100049, Peoples R China
推荐引用方式
GB/T 7714		 Li, Jiwei,Xie, Jiangbo,Zhang, Yu,et al. Interactive effects of nitrogen and water addition on soil microbial resource limitation in a temperate desert shrubland[J]. PLANT AND SOIL,2022:18.
APA Li, Jiwei,Xie, Jiangbo,Zhang, Yu,Dong, Lingbo,Shangguan, Zhouping,&Deng, Lei.(2022).Interactive effects of nitrogen and water addition on soil microbial resource limitation in a temperate desert shrubland.PLANT AND SOIL,18.
MLA Li, Jiwei,et al."Interactive effects of nitrogen and water addition on soil microbial resource limitation in a temperate desert shrubland".PLANT AND SOIL (2022):18.

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来源：地理科学与资源研究所

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