Open AccessDiscussion on the Conversion Method of Soil Enzyme Stoichiometry from Different Vegetation Types in Guizhou Grassland, Southwest China
Author(s) -
Feifei Yang,
Leilei Ding,
Yujun Zhang,
Puchang Wang,
Jiajia Liu,
Chao Zou,
Chao Chen
Publication year - 2020
Publication title -
journal of physics. conference series
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.21
H-Index - 85
eISSN - 1742-6596
pISSN - 1742-6588
DOI - 10.1088/1742-6596/1549/2/022035
Subject(s) - grassland , nutrient , vegetation (pathology) , soil nutrients , soil water , soil enzyme , agronomy , enzyme , enzyme assay , environmental science , chemistry , biology , ecology , soil science , biochemistry , medicine , pathology
Soil extracellular enzymes play an important role in regulating the circulation and fixation of soil nutrients, and their stoichiometric ratio reflects the demand of microorganisms for nutrients and the supply of nutrients in the environment, so it has been widely concerned. In this study, the soil C-, N- and P-acquiring enzyme activities (β-1, 4-glucosidase, BG; β-1, 4-N-acetylglucosaminidase, NAG; leucine aminopeptidase, LAP; acid phosphatase, AP) in the upper 30 cm of soils were investigated under three vegetation types (white clover grassland, fescue grassland and natural grassland) to explore the optimal enzyme stoichiometric conversion method. The results showed that the data converted from [asin (βG/[βG + AP])] or [asin (βG/[NAG + LAP])] were more suitable to the normal distribution in general. The response of different soil enzyme conversion methods to soil depth was different. The conversion from [asin (βG/[βG + AP])] or [asin(βG/[NAG + LAP])] in 0-20 cm was more suitable to normal distribution, and the transformation of [ln (P/[1 - P])] was more suitable to normal distribution at 20-30cm. The response of different soil enzyme conversion methods to vegetation type was also different. The conversion from [asin (sqrt [βG/(βG + AP)])] or [asin (sqrt [βG/(NAG + LAP)])] was more suitable in fescue grassland, that of [ln (P/[1 - P])] was more suitable in white clover grassland, and that of [βG/AP]) or [βG/(NAG + LAP)] was more suitable in natural grassland.