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| Soil enzyme activities and influencing factors in farmlands around metalliferous mine wastelands in China |
| Received:October 13, 2022 Revised:November 15, 2022 |
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| KeyWord:soil;enzyme activity;soil physicochemical property;farmland;nutrient limitation;metalliferous mine wasteland |
| Author Name | Affiliation | E-mail | | LIU Shenyan | Guangdong Provincial Key Laboratory of Biotechnology for Plant Development, School of Life Science, South China Normal University, Guangzhou 510631, China | | | LI Fenglin | Guangdong Provincial Key Laboratory of Biotechnology for Plant Development, School of Life Science, South China Normal University, Guangzhou 510631, China | | | LU Jingli | Guangdong Provincial Key Laboratory of Biotechnology for Plant Development, School of Life Science, South China Normal University, Guangzhou 510631, China | | | FENG Shiwei | Guangdong Provincial Key Laboratory of Biotechnology for Plant Development, School of Life Science, South China Normal University, Guangzhou 510631, China | | | WU Zhuohui | Guangdong Provincial Key Laboratory of Biotechnology for Plant Development, School of Life Science, South China Normal University, Guangzhou 510631, China | | | LIANG Jieliang | Guangdong Provincial Key Laboratory of Biotechnology for Plant Development, School of Life Science, South China Normal University, Guangzhou 510631, China | | | JIA Pu | Guangdong Provincial Key Laboratory of Biotechnology for Plant Development, School of Life Science, South China Normal University, Guangzhou 510631, China | pjia@m.scnu.edu.cn | | LI Jintian | Guangdong Provincial Key Laboratory of Biotechnology for Plant Development, School of Life Science, South China Normal University, Guangzhou 510631, China | |
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| Abstract: |
| To investigate the heavy metal contamination in farmland around metalliferous mine wastelands in China, as well as soil enzyme activity and its main influencing factors in such farmlands, we collected a total of 29 sampling points of farmland from 18 provinces across China as the research objects and analyzed the main characteristics of soil extracellular enzyme activities and the correlation between soil physicochemical properties and heavy metal content on enzyme activities. The results revealed considerable variability in soil enzyme activities across different sampling sites in China. Moreover, the activity of soil enzymes increased in the order of β-1, 4-glucosidase< ureaseP<0.05). Additionally, the activities of β -1, 4-glucosidase, and acid phosphatase were significantly positively correlated with WSOC(P<0.01). Meanwhile, acid phosphatase activity was found to be significantly positively correlated with soil moisture content(SMC)and total phosphorus(TP)(P<0.05). The redundancy analysis(RDA)revealed that the main factors affecting the overall enzyme activity were in the following order:WSOC>TP>SMC>AP>TN>AK>pH>TK. Our results demonstrate that WSOC, TP, and SMC are the main influencing factors of soil enzyme activities in farmland surrounding most metalliferous mine wastelands across China. |
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