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| Effects of converting natural forests to Moso bamboo and tea plantations on soil extracellular enzyme activity in subtropical China |
| Received:August 18, 2021 |
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| KeyWord:soil extracellular enzyme activity;key driving factor;natural forest;Moso bamboo plantation;tea plantation;land-use change |
| Author Name | Affiliation | E-mail | | ZHANG Haikuo | State Key Laboratory of Subtropical Silviculture, Zhejiang A&F University, Hangzhou 311300, China
College of Environmental and Resource Sciences, Zhejiang A&F University, Hangzhou 311300, China | | | ZHANG Baogang | State Key Laboratory of Subtropical Silviculture, Zhejiang A&F University, Hangzhou 311300, China
College of Environmental and Resource Sciences, Zhejiang A&F University, Hangzhou 311300, China | | | ZHOU Zhongyu | State Key Laboratory of Subtropical Silviculture, Zhejiang A&F University, Hangzhou 311300, China
College of Forestry and Biotechnology, Zhejiang A&F Universi ty, Hangzhou 311300, China | | | LIANG Jiahui | State Key Laboratory of Subtropical Silviculture, Zhejiang A&F University, Hangzhou 311300, China
College of Environmental and Resource Sciences, Zhejiang A&F University, Hangzhou 311300, China | | | WU Jiasen | State Key Laboratory of Subtropical Silviculture, Zhejiang A&F University, Hangzhou 311300, China
College of Environmental and Resource Sciences, Zhejiang A&F University, Hangzhou 311300, China | | | Lü Yulong | Planning and Natural Resources Bureau of Anji County, Anji 313300, China | | | XIE Hongtu | Institute of Applied Ecolo gy, Chinese Academy of Sciences, Shenyang 110016, China | | | CAI Yanjiang | State Key Laboratory of Subtropical Silviculture, Zhejiang A&F University, Hangzhou 311300, China
College of Environmental and Resource Sciences, Zhejiang A&F University, Hangzhou 311300, China | yjcai@zafu.edu.cn |
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| Abstract: |
| Converting natural forests into Moso bamboo and tea plantations may significantly alter the soil extracellular enzyme activities （EEAs）in subtropical regions. This study assessed soil EEAs and environmental factors in natural forests, as well as the areas that were converted into extensively managed Moso bamboo and tea plantations in Anji County, Zhejiang Province, China. To elucidate changes in the characteristics and mechanisms of EEAs after changes in land-use, and key factors that control the behavior of soil EEAs, redundancy analysis（RDA）and Spearman rank correlation analysis were performed. The results showed that the activity of soil acid phosphatase （ACP）decreased significantly, and soil phenol oxidase（POX）activity increased significantly in Moso bamboo and tea plantations, when compared to their activity in natural forests. Additionally, converting natural forests into Moso bamboo plantations significantly increased the activity of soil leucine aminopeptidase（LAP）, while their conversion into tea plantations significantly decreased the activity of soil β-1, 4,-glucosidase（BG）, cellobiohydrolase（CBH）, and β-1,4-N-acetyl-glucosaminidase（NAG）. The available nitrogen and phosphorus in the soil were more abundant in tea plantations, while soil phosphorus limitation was alleviated in Moso bamboo plantations; the primary energy source for soil microorganisms in both tea and Moso bamboo plantations was recalcitrant carbon. In addition, RDA showed that the soil pH was the main governing factor for variations in the soil ′ s total EEAs. Therefore, converting natural forests into plantations of Moso bamboo and tea significantly changes the total soil EEAs, and soil pH is the main factor governing the variation in total EEAs of the soil. |
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