TY  - JOUR
AU  - Huang, Yaping
AU  - Wang, Qiqi
AU  - Zhang, Wenju
AU  - Zhu, Ping
AU  - Xiao, Qiong
AU  - Wang, Chuanjie
AU  - Wu, Lei
AU  - Tian, Yanfang
AU  - Xu, Minggang
AU  - Gunina, Anna
TI  - Stoichiometric imbalance of soil carbon and nutrients drives microbial community structure under long-term fertilization
JO  - Applied soil ecology
VL  - 168
SN  - 0929-1393
CY  - Amsterdam
PB  - Elsevier
M1  - FZJ-2021-06038
SP  - 104119 -
PY  - 2021
N1  - Ein Postprint steht leider nicht zur Verfügung
AB  - Fertilization affects soil microbial community by altering soil organic carbon (C) and nutrients availability. However, it remains unclear how changes in stoichiometric C, N, and P ratios resulting from fertilization affect microbial community. We investigated a 26-year field experiment receiving inorganic fertilizers (N, NP, PK, and NPK), organic N combination (with manure and straw), natural recovery (fallow), and no fertilizer (control). The aim of this study was to explore the responses of microbial community to C: N:P stoichiometry in soil and microbial biomass of topsoil (0–20 cm) and subsoil (20–40 cm). Results showed that compared to control treatment, organic application increased the ratio of fungi to bacteria (F:B) in topsoil and gram-negative bacteria to gram-positive bacteria (G−:G+) in subsoil. However, application of inorganic decreased both the F: B and G−:G+ ratio in topsoil. Increasing soil C, N and P availability resulted from inorganic fertilizers and organic combination fertilization caused stoichiometric imbalance between soil and microbial biomass. As a result, the F:B and G−:G+ ratio were positively related to C:N imbalance but negatively associated with N:P imbalance in topsoil. Redundancy analysis (RDA) showed that main factors regulating microbial community were pH, C:P and N:P imbalances in topsoil, whereas TDN, N:P imbalance, DOC and soil C:N in subsoil. Furthermore, C:P and N:P imbalance explained 16.4% in topsoil, and N:P imbalance explained 22.0% in subsoil of microbial community variation. These results reveal the shifts of soil microbial community are driven by changes in soil pH and C, N and P stoichiometric imbalance from long-term fertilization.
LB  - PUB:(DE-HGF)16
UR  - <Go to ISI:>//WOS:000701612500017
DO  - DOI:10.1016/j.apsoil.2021.104119
UR  - https://juser.fz-juelich.de/record/904468
ER  -