[1]XIN Qi,LIANG Chutao,ZHANG Jiaoyang,et al.Effects of Nitrogen Addition on Dissolved Matter and Spectroscopic Characteristics of Soil Growing Bothriochloa ischaemum[J].Research of Soil and Water Conservation,2017,24(05):93-98,104.
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Research of Soil and Water Conservation[ISSN 1005-3409/CN 61-1272/P] Volume:
24
Number of periods:
2017 05
Page number:
93-98,104
Column:
Public date:
2017-10-28
- Title:
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Effects of Nitrogen Addition on Dissolved Matter and Spectroscopic Characteristics of Soil Growing Bothriochloa ischaemum
- Author(s):
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XIN Qi1, LIANG Chutao2, ZHANG Jiaoyang1,2, JIANG Xinyu3, WANG Guoliang1,2, XUE Sha1,2
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1. College of Resources and Environment, Northwest A & F University, Yangling, Shaanxi 712100, China;
2. Institute of Soil and Water Conservation, Chinese Academy of Sciences and ministry of Water Resources, Yangling, Shaanxi 712100, China;
3. College of Landscape Architecture and Arts, Northwest A & F University, Yangling, Shaanxi 712100, China
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- Keywords:
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nitrogen addition; water-soluble C; N; spectroscopic characteristics; Bothriochloa ischaemum
- CLC:
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S151.9;S153.6
- DOI:
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- Abstract:
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The effect of atmospheric nitrogen deposition on soil has been the research hotspot in recent years. In order to study the effects of nitrogen deposition on soil quality of typical grassland in the Loess Plateau, a simulated nitrogen deposition was conducted with the method of nitrogen addition into the Bothriochloa ischaemum community. The four nitrogen addition gradients were CK (0 g/m2), N1 (2.5 g/m2), N2 (5 g/m2), N3 (10 g/m2), and the bare land (BL) was also selected as the control. The results showed that N addition decreased the contents of WSOC/TOC and WSOC, with the increase of N level, the trend decreased, but the effect of N addition on water soluble nitrogen was weak, only WSN and WSON significantly decreased in N2 treatment, no significant effect on WS-NH4+-N, WS-NO3--N and WSON/WSN was observed. Moreover, the effect of N addition on the spectral characteristics of soil water soluble organic matter was significant, the UV visible spectrum and the fluorescence emission spectrum showed that the main humus types of soil water soluble organic matter were fulvic acid, with the increase of nitrogen application, the humification degree increased and the structure became more complex