Beta-Glucosidase Activity in Paddy Soils of the Taihu Lake Region, China  

作　　者：WANG Xiao-Chang LU Qin 

机构地区：[1]Department of Tea Science, Zhejiang University, Hangzhou 310029 （China）. [2]Institute of Soil Science, Chinese Academy of Sciences, Nanjing 210008 （China）

出　　处：《Pedosphere》2006年第1期118-124,共7页土壤圈（英文版）

基　　金：Project supported by the National Natural Science Foundation of China (No. 40371066)the National Key Basic Research Support Foundation of China (No.G1999011808).

摘　　要：The profile distribution of β-gulcosidase activity in twelve typical paddy soil profiles with high productivity in the Taihu Lake region of China were investigated. Activities of β-gulcosidase in the plow layers were in the range of 52.68- 137.02μg PNP g^-1 soil h^-1 with a mean of 89.22μg PNP g^-1 soil h^-1. However, most plow layers ranged from 70 to 110 μg PNP g^-1 soil h^-1. The profile distribution of β-gulcosidase activity in the 12 soil profiles decreased rapidly with soil depth, with activity at the 60 cm depth only about 10% of that in the surface layers （0-15 cm or 0-20 cm）. In these soil profiles, β-gulcosidase activity was significantly positively correlated with soll organic carbon and arylsulphatase activity. Meanwhile, a significantly negative correlation was shown between β-gulcosidase activity and soil pH.The profile distribution of β-gulcosidase activity in twelve typical paddy soil profiles with high productivity in the Taihu Lake region of China were investigated. Activities of β-gulcosidase in the plow layers were in the range of 52.68-137.02 μg PNP g-1 soil h-1 with a mean of 89.22 μg PNP g-1 soil h-1. However, most plow layers ranged from 70 to 110 μg PNP g-1 soil h-1. The profile distribution of β-gulcosidase activity in the 12 soil profiles decreased rapidly with soil depth, with activity at the 60 cm depth only about 10% of that in the surface layers (0-15 cm or 0-20 cm). In these soil profiles, β-gulcosidase activity was significantly positively correlated with soil organic carbon and arylsulphatase activity. Meanwhile, a significantly negative correlation was shown between β-gulcosidase activity and soil pH.

关 键 词：beta-gulcosidase activity profile distribution paddy soil Taihu Lake region 

分 类 号：S15[农业科学—土壤学]