NDLI: Soil Enzyme Activities and Microbial Biomass Activities in Farmland Soil

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Soil Enzyme Activities and Microbial Biomass Activities in Farmland Soil

Content Provider	Semantic Scholar
Author	Kheyrodin, Hamid Ghazvinian, Khosro
Copyright Year	2012
Abstract	Soil enzymes activities and microbial biomass have an important influence on nutrient cycling. The spatial distribution of microbial biomass and soil hydrolysis activities involved in soil C-, N-, and P-cycle was examined in the farmlands of Iran. Significant (P < 0.05) correlations were observed between latitude and activities of invertase and acid phosphatase, and the levels of MBC and MBN and the MBC/MBN ratio, which increased with the latitude. The spatial distribution of soil enzyme activities and microbial biomass depended on the contents of soil organic matter along the latitudinal gradient. The higher microbial biomass and activities of invertase and acid phosphatase in the north than in the south indicated the faster turnover rate of soil C-, N-, and P-cycle, which might accelerate soil organic matter decomposition and improve crop growth. Additionally, soil pH and EC had some impacts on soil enzyme activities. Significant positive correlations (P <0.05) were observed between invertase activity and the total N and available P, and between acid phosphatase activity and available N, total P. The urease, acid phosphatase, and dehydrogenase activities were significantly correlated with the soil pH and electrical conductivity (EC). MBC and MBN were positively correlated with the total C, C/N, and available P. The MBC/MBN ratio was correlated with the total C, total N, C/N, and available N. The distribution of soil enzyme activities and microbial biomass resulted from the changes in soil properties such as soil organic matter, soil pH, and EC, partially owing to variations in
File Format	PDF HTM / HTML
Alternate Webpage(s)	http://lib.semnan.ac.ir/uploads/kheyreddin_article1.pdf
Language	English
Access Restriction	Open
Content Type	Text
Resource Type	Article

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