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Phosphate addition enhanced soil inorganic nutrients to a large extent in three tropical forests
Zhu, Feifei; Lu, Xiankai; Liu, Lei; Mo, Jiangming
2015-01-21
Source PublicationSCIENTIFIC REPORTS
Volume5Issue:1Pages:1-7
AbstractElevated nitrogen (N) deposition may constrain soil phosphorus (P) and base cation availability in tropical forests, for which limited evidence have yet been available. In this study, we reported responses of soil inorganic nutrients to full factorial N and P treatments in three tropical forests different in initial soil N status (N-saturated old-growth forest and two less-N-rich younger forests). Responses of microbial biomass, annual litterfall production and nutrient input were also monitored. Results showed that N treatments decreased soil inorganic nutrients (except N) in all three forests, but the underlying mechanisms varied depending on forests: through inhibition on litter decomposition in the old-growth forest and through Al3+ replacement of Ca2+ in the two younger forests. In contrast, besides great elevation in soil available P, P treatments induced 60%, 50%, 26% increases in sum of exchangeable (K++Ca2++Mg2+) in the old-growth and the two younger forests, respectively. These positive effects of P were closely related to P-stimulated microbial biomass and litter nutrient input, implying possible stimulation of nutrient return. Our results suggest that N deposition may result in decreases in soil inorganic nutrients (except N) and that P addition can enhance soil inorganic nutrients to support ecosystem processes in these tropical forests.
Department城市与区域生态国家重点实验室
WOS Research AreaMultidisciplinary Sciences
WOS IDWOS:000348104600001
Citation statistics
Cited Times:11[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.rcees.ac.cn/handle/311016/32354
Collection城市与区域生态国家重点实验室
Recommended Citation
GB/T 7714
Zhu, Feifei,Lu, Xiankai,Liu, Lei,et al. Phosphate addition enhanced soil inorganic nutrients to a large extent in three tropical forests[J]. SCIENTIFIC REPORTS,2015,5(1):1-7.
APA Zhu, Feifei,Lu, Xiankai,Liu, Lei,&Mo, Jiangming.(2015).Phosphate addition enhanced soil inorganic nutrients to a large extent in three tropical forests.SCIENTIFIC REPORTS,5(1),1-7.
MLA Zhu, Feifei,et al."Phosphate addition enhanced soil inorganic nutrients to a large extent in three tropical forests".SCIENTIFIC REPORTS 5.1(2015):1-7.
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