Effects of phytoremediation on soil enzyme activity and thermodynamic characteristics of enzymatic reaction in severe saline-alkali land.

With the environmental changes and the increases of anthropogenic disturbance, the area and degree of salinization in saline-alkaline lands of Songnen Plain have been increasing with an unprecedented rate. In this study, the effects of restoration of natural vegetation, , and on the enzymatic activi...

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Published inYing yong sheng tai xue bao Vol. 31; no. 12; p. 4243
Main Authors Luo, Hui, Feng, Cheng-Cheng, Yue, Zhong-Hui, Zhao, Jing-Yi, Tang, Zhuo-Lei
Format Journal Article
LanguageChinese
Published China 01.12.2020
Subjects
Alkalies
Biodegradation, Environmental
China
Poaceae
Soil
Thermodynamics
China
warming
phytoremediation
severe saline-alkali land
soil enzyme activity
thermodynamic characteristic
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Summary:With the environmental changes and the increases of anthropogenic disturbance, the area and degree of salinization in saline-alkaline lands of Songnen Plain have been increasing with an unprecedented rate. In this study, the effects of restoration of natural vegetation, , and on the enzymatic activities and thermomechanical characteristics of enzyme catalyzed reaction of two oxidoreductases (catalase, polyphenol oxidase) and three hydrolases (alkaline phosphatase, sucrase, urease) were investigated in heavily saline-alkaline soils from western Songnen Plain. The results showed that the activities of those five soil enzyme as well as the activation free energy (Δ ) increased with increasing temperature, reaching respective maximum at 40 and 45 ℃. The activation enthalpy (Δ ) and entropy (Δ ) of soil enzyme did not change with increasing temperature. The temperature coefficient ( ) slightly changed and ranged from 1.05 to 1.36 by every 10 ℃ enhancement of temperature. Compared with the bare land, catalase activ
ISSN:1001-9332
DOI:10.13287/j.1001-9332.202012.025