|Table of Contents|

Effects of Enclosure on Soil Particle Composition and Nutrient Enrichment of Stipa breviflora

《北方园艺》[ISSN:1001-0009/CN:23-1247/S]

Issue:
2019年09
Page:
98-105
Research Field:
Publishing date:

Info

Title:
Effects of Enclosure on Soil Particle Composition and Nutrient Enrichment of Stipa breviflora
Author(s):
MIAO Fan1; 2; 3; YANG Xinguo1; 2; 3; GU Junlong1; 2; 3; YANG Dongdong1; 2; 3
(1.Northwest National Key Laboratory Breeding Base for Land Degradation and Ecological Restoration,Ningxia University,Yinchuan,Ningxia 750021；2.Key Laboratory of Restoration and Reconstruction of Degraded Ecosystems,Ministry of Education,Ningxia University,Yinchuan,Ningxia 750021；3.Joint Research Center for Ecology and Biological Resources Development in Western China,Ningxia University,Yinchuan,Ningxia 750021)
Keywords:
Stipa breviflora; enclosure; particle composition; SOC and TN; enrichment effect
PACS:
-
DOI:
10.11937/bfyy.20182896
Abstract:
The integrated soil collector was used as the experimental material,and the percentage difference method inside and outside the plant was adopted.The enclosure of degraded Stipa breviflora was studied,and the free grazing grassland was used as the control.The spatial variation of soil particle composition and SOC and TN enrichment effects in the desert steppe was studied.In order to answer the impact of planting on soil enrichment.The results showed that in terms of the enrichment rate ‘E’ value.The enrichment pattern of clay (<2 μm) and sand (50-2 000 μm) was roughly opposite,and habitat and soil depth have no significant effect on the enrichment of silt (2-500 μm) (P>0.05).SOC in the 6-8 cm soil layer grazing area was significantly higher than the enclosed area（P<0.05）,the 12-14 cm soil layer enclosing area was significantly higher than the grazing area (P>0.05)；TN was significantly higher in the enclosed area of 4-6 cm soil than in the grazing area（P<0.05）,the grazing area of the 12-14 cm soil layer was significantly higher than the enclosed area (P>0.05).Vertical variation along the depth of the soil layer,particle composition only in the grazing area sand ‘E’ value in the 12-14 cm soil layer was significantly increased（P＞0.05）.The ‘E’ value of the 0-2 cm soil layer in the SOC enclosure was significantly higher than that in other soil layers (P<0.05),the TN grazing area was reduced first and then the ‘V’ type was increased,and the ‘E’ value of the 4-8 cm soil layer is significantly reduced (P<0.05),there was no significant change in the SOC of the grazing area and the TN of the enclosed area (P>0.05).There was a significant negative correlation between the ‘E’ values of caly and sand (P<0.05),and the correlation between the ‘E’ values of the silt and clay,silt and sand was reversed;the composition of the particles and the ‘E’ value of the SOC,TN correlation was not significant (P>0.05).In short，enclosure did not increase the overall enrichment rate of soil clay by the short stalk,but encapsulation did promote soil cohesive and SOC surface enrichment;soil SOC and TN enrichment was two independent processes,and the enclosing was beneficial to the enrichment of TN in any soil layer.

References:

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Last Update: 2019-06-11