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[1]WU Yang,LI Qiang,XU Hongwei,et al.Effects of Nitrogen Addition on Characteristic of Glomalin in the Soil of Bothriochloa ischaemum[J].Research of Soil and Water Conservation,2018,25(05):61-65,71.

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Effects of Nitrogen Addition on Characteristic of Glomalin in the Soil of Bothriochloa ischaemum

Research of Soil and Water Conservation[ISSN 1005-3409/CN 61-1272/P] Volume: 25 Number of periods: 2018 05 Page number: 61-65,71 Column: Public date: 2018-09-06

Title:: Effects of Nitrogen Addition on Characteristic of Glomalin in the Soil of Bothriochloa ischaemum

Author(s):: WU Yang¹, LI Qiang², XU Hongwei³, QIAO Leilei⁴, LI Yuanze⁵, XUE Sha^1,3; 1. College of Natural Resources and Environment, Northwest A & F University, Yangling, Shaanxi 712100, China;
2. Shaanxi Key Laboratory of Ecological Restoration in Shaanbei Mining Area, Yulin University, Yulin, Shaanxi 719000, China;
3. State Key Laboratory of Soil Erosion and Dryland Farming on the Loess Plateau, Institute of Soil and Water Conservation, Chinese Academy of Sciences and Ministry of Water Resources, Yangling, Shaanxi 712100, China

Keywords:: glomalin-related soil protein; nitrogen addition; Bothriochloa ischaemum

CLC:: S151.9

DOI:: -

Abstract:: Glomalin or glomalin-related soil protein is the hydrophobic protein secreted by AMF.In order to study the effects of nitrogen deposition on soil GRSP of typical Bothriochloa ischaemum community in the Loess Plateau, simulated nitrogen deposition was conducted with the method of nitrogen addition into plots.The four nitrogen addition gradients were CK (0 g/m²), N₁ (2.5 g/m²), N₂ (5 g/m²) and N₃ (10 g/m²), and the bare land (LD) was also selected as the control.The results showed that the content of total glomalin in soil increased firstly and then decreased, but the change did not reach to the significant level, and the contents of easily extractable glomalin decreased significantly in N₃ (P < 0.05).Redundancy analysis showed that SOC, C/N, the below-ground biomass and the under-ground biomass were the main factors affecting soil GRSP.In this study, the effect of nitrogen addition on soil active substance was analyzed from the perspective of soil GRSP, which is helpful to reveal the change of soil quality under the background of global nitrogen deposition in the future and deepen the understanding of soil ecological change process.

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