KONG Tao, WU Xiang-yun, ZHAO Xue-song, et al. Soil Microbial Quantity and Soil Enzyme Activity Characteristics of Riparian Zone in Upper Reaches of Hunhe River[J]. Bulletin of Soiland Water Conservation, 2014, 33(1): 123-128.
DOI:
KONG Tao, WU Xiang-yun, ZHAO Xue-song, et al. Soil Microbial Quantity and Soil Enzyme Activity Characteristics of Riparian Zone in Upper Reaches of Hunhe River[J]. Bulletin of Soiland Water Conservation, 2014, 33(1): 123-128. DOI: 10.13961/j.cnki.stbctb.2014.01.004.
Soil Microbial Quantity and Soil Enzyme Activity Characteristics of Riparian Zone in Upper Reaches of Hunhe River
In order to study soil quality of riparian zone in the upper reaches of the Hunhe River
a field investigation combined with laboratory analysis was employed to determine soil microbial quantity and enzyme activity characteristics of natural shrub grassland
secondary forest
artificial pine forest and corn field. The four vegetation riparian zones
in order of decreasing soil microbial quantity
were natural shrub grassland and secondary forest
artificial pine forest
and corn field. Bacteria occupied the most in the soil microbial groups
with proportions of 99.87%~99.94%. The activities of soil invertase
urease
phosphatase
polyphenol oxidase and catalase were 12.95~76.43 mg/(g·d)
0.35~1.80
1.32~6.39
0.35~1.61 mg/(g·d) and 0.93~3.27 ml/(g·20 min)
respectively. The four riparian zones
in order of decreasing activities of the five soil enzymes
were natural shrub grassland and secondary forest
artificial pine forest
and corn field. By correlation analysis
the quantity of bacteria had a significantly positive correlation with the activities of the five enzymes
the quantity of actinomyces had a significantly positive correlation with the activities of the soil enzymes except hydrogen peroxide enzyme
and the quantity of fungi had significantly positive correlation with the activity of sucrase
phosphatase and polyphenol oxidase. In the four vegetation riparian zones
natural shrub grassland and secondary forest had the greatest microbial quantity
highest soil enzyme activity
and best soil quality and therefore
they are very good forms of riparian zone.
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references
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