[1]LIU Lin,YU Jiajie,ZHOU Wenjing.Soil Active Organic Carbon Components and Organic Carbon Reserves Under Different Garden Plants[J].Research of Soil and Water Conservation,2020,27(05):38-44.
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Research of Soil and Water Conservation[ISSN 1005-3409/CN 61-1272/P] Volume:
27
Number of periods:
2020 05
Page number:
38-44
Column:
目次
Public date:
2020-08-20
- Title:
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Soil Active Organic Carbon Components and Organic Carbon Reserves Under Different Garden Plants
- Author(s):
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LIU Lin1, YU Jiajie1, ZHOU Wenjing1,2
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(1.Chongqing Vocational College of Architectural Engineering, Chongqing 400072, China; 2.College of landscape and horticulture, Southwest Forestry University, Kunming 650224, China)
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- Keywords:
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garden plants; soil organic carbon; soil active organic carbon
- CLC:
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S718.5
- DOI:
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- Abstract:
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As an important index of soil quality, soil active organic carbon(SLOC)plays an important role in many physical, chemical and biological properties of soil. From August 2016 to August 2018, through sampling and analysis of soil samples under different garden plants for three consecutive years, the characteristics of active organic carbon components and organic carbon reserves in soils under different garden plants were systematically studied and compared. The results showed that:(1)in the vertical direction, the organic carbon contents in the soils of garden plants in different years gradually decreased with the increase of soil depth, showing an obvious surface aggregation, among which the surface layer increased with the increase of years, while the organic carbon content in deep layer did not change significantly with the increase of years; in addition, the soil organic carbon contents under garden plants in different years and at different soil depths were significantly higher under oleander and heather than those under magnolia and privet;(2)the storage of soil organic carbon was consistent with the change rule of soil organic carbon content; the storages of soil organic carbon under garden plants in different years gradually decreased with the increase of soil depth, among which the increase trend of surface layer was more obvious with the increase of year, while the change of deep layer organic carbon content was not obvious with the increase of year;(3)soil easy oxidation organic carbon(EOC), particulate organic carbon(POC), light organic carbon(LFOC)and water soluble organic carbon(WSOC)under landscape plants of different particulate decreased with the increase of soil depth, the contents of these organic carbon fractions in surface layer were the largest, indicating the apparent agglomeration of soil organic carbon fractions in the topsoil, the increases of soil organic carbon in the surface layers were significant with the increase of the years, the changes in organic carbon reserves in deep layers were not significant over the years; in the same soil layer, EOC, POC, LFOC and WSOC under Apocynaceae and Photinia serrulatawere higher than those under Magnolia grandiflora and Ligustrun lucidum;(4)there were a significant linear relationship between soil active organic carbon and soil total organic carbon, which indicated that soil active organic carbon was dependent on soil total organic carbon content and characterized the carbon content of the more active part of soil from different perspectives;(5)interactive analysis showed that soil depth and plant types had significant effects on soil organic carbon and active organic carbon (p<0.05), while years had no significant effects on soil organic carbon and active organic carbon (p>0.05); the interaction of plant types and soil depths had significant effects on soil organic carbon and active organic carbon (p<0.05), however, the interactions of plant type and year and the interaction of soil depth and year had no significant effect on soil organic carbon and active organic carbon (p>0.05).