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 Soil enzyme activities and their relationships to soil physicochemical properties in different successive rotation plantations of Eucalyptus grandis*(PDF)

Chinese Journal of Applied & Environmental Biology[ISSN:1006-687X/CN:51-1482/Q]

Issue:
2019 06
Page:
1-10
Research Field:
Articles
Publishing date:

Info

Title:
 Soil enzyme activities and their relationships to soil physicochemical properties in different successive rotation plantations of Eucalyptus grandis*
Author(s):
 WEI Shengzhao1 LI Lin 1 2 LUO Xiao1 2 TAN Jingxin1 2 LIU Xiong1 LIU Xing1 YANG Shuai1 CAO Qin1 & HUANG Congde 1**
1 College of Forestry, Sichuan Agricultural University , Chengdu 611130, Sichuan, China
2 Sichuan Forestry Investigation and Design Institute , Chengdu 610000, Sichuan, China
Keywords:
Eucalyptus grandis plantation successive rotations Soil enzyme activity redundancy analysis the relative importance analysis
CLC:
-
PACS:
DOI:
10.19675/j.cnki.1006-687x.2019.02029
DocumentCode:

Abstract:
Soil enzymes are indicators for evaluating soil environmental quality. Soil physicochemical properties determine the substrate and environment for enzymatic reaction. Studying the relationship between soil enzyme activities and soil physicochemical properties in different successive rotation plantations of E. grandis is very important for sustainable management. In July 2016, we chose the first, second and third rotation plantations of E. grandis and Pinus massoniana forests as the research objects in Qingshen County, Sichuan Province. Soil enzyme activities and their relationship with soil physicochemical properties in different successive rotation plantations of E. grandis were studied using the space-time interchange method. The results showed that compared with the Pinus massoniana forests, the activities of urease, polyphenol oxidase and catalase in the first rotation plantations of E. grandis significantly increased, although the activities of invertase, acid phosphatase and peroxidase did not change significantly. However, with the increasing continuous plantations of Eucalyptus grandis, the activities of soil invertase, urease, acid phosphatase, polyphenol oxidase, catalase and peroxidase decreased. Redundancy analysis showed that soil bulk density, pH, organic matter and total phosphorus significantly affect soil enzyme activities in different successive rotation Plantations of E. grandis. Soil total phosphorus was the most important factor affecting soil enzyme activity, which could explain 60% variation of the soil enzyme activity. Total nitrogen did not have significant effect on the soil enzymes, only 20.5% variation of soil enzymes activity could be explained , although the relative importance analysis further showed that soil total nitrogen had significantly effect on the activities of urease and polyphenol oxidase of E. grandis plantations . The results indicated that soil physicochemical properties could play an important role in continuous cropping processes of E. grandis plantations by regulating soil enzyme activity.

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Last Update: 2019-04-12