Soil Enzyme Activities Among Different Vegetation Types in the South of Shiwan Mountain, Guangxi Province

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Chinese Agricultural Science Bulletin ›› 2014, Vol. 30 ›› Issue (31) : 33-40. DOI: 10.11924/j.issn.1000-6850.2014-1775

Soil Enzyme Activities Among Different Vegetation Types in the South of Shiwan Mountain, Guangxi Province

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Abstract

The paper aims to reveal the characteristics of soil enzyme activity and the relationship between soil nutrient and enzyme activity among different vegetations in typical monsoon forest in the south of Shiwan Mountain, Guangxi Province. Using an approach of spatial sequence instead of time successional sequence, we chose the soil of secondary broad- leaved forest, masson pine forest, shrub- grassland and wasteland as the study object. The number of microorganisms, soil nutrient and the change of soil enzyme activities were investigated. The results showed that the number of total microorganisms in the same soil layer followed the way of secondary broad-leaved forest＞masson pine forest＞shrub-grassland＞waste land, and it decreased with the increasing of soil depth. Microbe group showed the pattern of bacteria＞actinomycetes＞fungi. The SOC content in soil surface of secondary broad-leaved forest was the highest about (19.61±0.48) g/kg, and the AN content in masson pine forest was the highest，but the other soil nutrient content showed that secondary broad- leaved forest＞masson pine forest＞shrub-grassland＞waste land. The vertical distribution of soil enzyme activities in each vegetation type showed that the enzyme activities of soil surface were higher than that of the lower soil. And there was a great significant difference between different vegetation types. Besides, the activities of soil urease, invertase, acid phosphatase and peroxidase in secondary broad-leaved forest were obviously higher than that of masson pine forest, shrub-grassland and waste land. There were different correlations between soil enzyme activities and soil nutrients under the same vegetation type. However, the urease activity showed negative correlation with soil total phosphorus and available phosphorus content in the waste land. The number of soil microorganism and soil enzyme activity could be the indices to evaluate the soil fertility, expecting to provide a more reasonable evaluation system for the natural recovery and reconstruction of vegetation in Guangxi Shiwan Mountain Nature Reserve.

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Shiwan Mountain; vegetation type; soil enzyme activity; soil microorganism; soil nutrient

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Soil Enzyme Activities Among Different Vegetation Types in the South of Shiwan Mountain, Guangxi Province. Chinese Agricultural Science Bulletin. 2014, 30(31): 33-40 https://doi.org/10.11924/j.issn.1000-6850.2014-1775

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