Effects of Simulated Nitrogen Deposition on Soil Net Nitrogen Mineralization in the Meadow Steppe of Inner Mongolia, China
Liu, XR; Ren, JQ; Li, SG; Zhang, QW
2015
Source PublicationPLOS ONE
ISSN1932-6203
Volume10Issue:7Pages:-
AbstractEffects of simulated nitrogen (N) deposition on soil net nitrogen mineralization (NNM) were examined in situ during two growing seasons, using the resin-core technique in the semiarid meadow steppe in Inner Mongolia, China. The aim of this study is to clarify the effect of N levels (0, 10, and 20 kg N ha(-1)yr(-1)) and forms (NH4+ and NO3-) on soil mineral N and NNM. Our results showed that N levels had no significant differences on soil mineral N and NNM. In the first year, three N treatments ((NH4)(2)SO4, NH4Cl and KNO3) increased soil NH4+ concentrations but had no significant effects on soil NO3- concentrations. In the second year, (NH4)(2)SO4 treatment increased soil NO3- concentrations, NH4Cl and KNO3 treatments decreased them. Three N treatments significantly decreased soil NH4+ concentrations in the later stages of the second year. As for the soil NNM, three N treatments had no significant effects on the rates of soil NNM (R-m) and net nitrification (R-n) in the first year, but significantly decreased them in the second year. The contribution of N addition to Rm was higher from (NH4)(2)SO4 than from NH4Cl and KNO3. However, Soil Rm was mainly affected by soil water content (SWC), accumulated temperature (T-a), and soil total N (TN). These results suggest that the short-term atmospheric N deposition may inhibit soil NNM in the meadow steppe of Inner Mongolia.
SubtypeJournal
Subject AreaScience & Technology - Other Topics
WOS Subject ExtendedMultidisciplinary Sciences
WOS KeywordQINGHAI-TIBETAN PLATEAU ; ACID FOREST SOILS ; N-MINERALIZATION ; IMMOBILIZATION TURNOVER ; MICROBIAL BIOMASS ; TEMPERATE STEPPE ; CONIFER FOREST ; NORTHERN CHINA ; NITRIFICATION ; CARBON
Indexed BySCI
Language英语
WOS IDWOS:000358595900070
PublisherPUBLIC LIBRARY SCIENCE
Citation statistics
Cited Times:1[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.igsnrr.ac.cn/handle/311030/44390
Collection生态系统网络观测与模拟院重点实验室_生态网络实验室
Recommended Citation
GB/T 7714
Liu, XR,Ren, JQ,Li, SG,et al. Effects of Simulated Nitrogen Deposition on Soil Net Nitrogen Mineralization in the Meadow Steppe of Inner Mongolia, China[J]. PLOS ONE,2015,10(7):-.
APA Liu, XR,Ren, JQ,Li, SG,&Zhang, QW.(2015).Effects of Simulated Nitrogen Deposition on Soil Net Nitrogen Mineralization in the Meadow Steppe of Inner Mongolia, China.PLOS ONE,10(7),-.
MLA Liu, XR,et al."Effects of Simulated Nitrogen Deposition on Soil Net Nitrogen Mineralization in the Meadow Steppe of Inner Mongolia, China".PLOS ONE 10.7(2015):-.
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