[1]FENG Jiaoyin,HUANG Changmou,SHI Xiyuan,et al.Changes of Soil Physical and Chemical Properties of Forest Land in the Early Stage of Eucalyptus and Erythrophleum fordii Mixed Forest[J].Research of Soil and Water Conservation,2017,24(03):295-300.
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Changes of Soil Physical and Chemical Properties of Forest Land in the Early Stage of Eucalyptus and Erythrophleum fordii Mixed Forest
Research of Soil and Water Conservation[ISSN 1005-3409/CN 61-1272/P] Volume:
24
Number of periods:
2017 03
Page number:
295-300
Column:
Public date:
2017-06-28
- Title:
- Changes of Soil Physical and Chemical Properties of Forest Land in the Early Stage of Eucalyptus and Erythrophleum fordii Mixed Forest
- Keywords:
- Eucalyptus grandis×Eucalyptus urophylla; Erythrophleum fordi; mixed forests; soil physical and chemical properties; phenolic compounds
- CLC:
- S792.39
- DOI:
- -
- Abstract:
- Study on the changes of soil physical and chemical properties of forest land in the early stage of afforestation was carried out with 2-year-old Eucalyptus grandis×Eucalyptus urophylla plantations and the mixed forest of Eucalyptus grandis×Eucalyptus urophylla and Erythrophleum fordii as the samples. The relationship between soil physical, chemical properties, soil enzyme activities and soil phenolic substances was investigated. The results show that: (1) the pH values of soil in the root zone of the two kinds of forest stands were small. The pH value in the 0—20 cm soil layer is greater than that in the 20—40 cm layer. The soil natural moisture content, bulk density, maximum moisture content, total porosity and aeration degree in the mixed forest in 0—20 cm soil layer were higher than those in the pure forest. For 20—40 cm depth in the forest, the bulk density, total porosity, ventilation and drainage capacity were higher than those in the pure forest, but the natural water content and maximum water holding capacity were instead. The urease activity in mixed forest in the 0—20 cm soil layer was 1.46 mg/(g·h), which reached the maximum. The activity of urease, phosphatase and polyphenol oxidase in the mixed forest showed that in the Eucalyptus grandis×Eucalyptus urophylla root zone was bigger than Erythrophleum fordii root zone, and there were minimum in the Eucalyptus grandis×E. urophylla root zone in the pure forest. The content of total phenols and compound phenols were the largest in the root zone in the pure forest. The content of water soluble phenol in the 0—20 cm soil layer of mixed forest was maximum. The content range of soil water soluble phenol was 0.62~2.04 μg/g. The contents of phenolic compounds in soil were low in the early stage of pure forest, it did not accumulated in the soil. Eucalyptus grandis×Eucalyptus urophylla and Erythrophleum fordii mixed planting could improve soil physical and chemical properties and soil enzyme activity in the early stage. There was a certain correlation between soil physical and chemical properties, soil enzyme activities and the contents of phenolic acids.
- References:
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1900-01-01