[1]HE Lirong,LIANG Chutao,XIN Qi,et al.Effects of Simulated Nitrogen Deposition on Soil Soluble Nitrogen Content and Organic Functional Group Characteristics of Pinus tabulaeformis[J].Research of Soil and Water Conservation,2018,25(05):36-40.
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Effects of Simulated Nitrogen Deposition on Soil Soluble Nitrogen Content and Organic Functional Group Characteristics of Pinus tabulaeformis

Research of Soil and Water Conservation[ISSN 1005-3409/CN 61-1272/P] Volume: 25 Number of periods: 2018 05 Page number: 36-40 Column: Public date: 2018-09-06
Title:
Effects of Simulated Nitrogen Deposition on Soil Soluble Nitrogen Content and Organic Functional Group Characteristics of Pinus tabulaeformis
Author(s):
HE Lirong1, LIANG Chutao2, XIN Qi1, XUE Sha1,2
1. College of Natural Resources and Environment, Northwest A & F University, Yangling, Shaanxi 712100, China;
2. State Key Laboratory of Soil Erosion and Dryland Farming on the Loess Plateau, Institute of Soil and Water Conservation, Chinese Academy of Sciences, Yangling, Shaanxi 712100, China
Keywords:
nitrogen deposition; water soluble organic matter; nitrogen component; functional group characteristic; rhizosphere
CLC:
S714.2
DOI:
-
Abstract:
To study the effects of nitrogen deposition on the functional characteristics of soil soluble nitrogen and soluble organic matter on the Loess Plateau, 6 nitrogen levels 0, 2.8, 5.6, 11.2, 22.4 and 44.8 gN/(m2·a) potted pine were set, continuous cultivation lasted for five years. Nitrogen addition significantly increased soil water soluble total nitrogen, water soluble inorganic nitrogen and water soluble organic nitrogen content, the proportion of soluble organic nitrogen to soluble nitrogen increased exponentially with the increase of nitrogen deposition. The soluble nitrogen and its components showed no obvious rhizosphere effects. At the same time, it was found that the lower and higher levels of nitrogen deposition increased the accumulation of aromatic compounds of soil water soluble organic matter in the rhizosphere, but could not make the difference in non rhizosphere soil. Nitrogen deposition can increase the content of nitrogen in soil which can be dissolved in water. The effect of plant root system on this trend is not significant. Pinus tabulaeformis can hardly change the effect of nitrogen deposition on the content of active nitrogen in soil. The combined effects of nitrogen deposition and Pinus tabulaeformis can increase the aromatic functional groups of the water soluble organic compounds in the rhizosphere.
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