Effects of Close-to-Nature Transformation on Soil Enzyme Activities and Organic Carbon Fractions in <i>Cuninghamia lanceolata</i> and <i>Pinus massoniana</i> Plantations
Soil enzymes are involved in the process of mineralization of soil organic matters. The close-to-nature transformation (CNT) of plantations changes the soil enzyme activities by changing the composition of stand vegetation, which in turn affects the change process of soil organic carbon. We therefor...
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MDPI AG
2022-06-01
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| Series: | Forests |
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| Online Access: | https://www.mdpi.com/1999-4907/13/6/872 |
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| author | Weiwei Shu Angang Ming Jihui Zhang Hua Li Huilin Min Junxu Ma Kun Yang Zhongguo Li Ji Zeng Juling Wei Zhaoying Li Yi Tao |
| author_facet | Weiwei Shu Angang Ming Jihui Zhang Hua Li Huilin Min Junxu Ma Kun Yang Zhongguo Li Ji Zeng Juling Wei Zhaoying Li Yi Tao |
| author_sort | Weiwei Shu |
| collection | DOAJ |
| description | Soil enzymes are involved in the process of mineralization of soil organic matters. The close-to-nature transformation (CNT) of plantations changes the soil enzyme activities by changing the composition of stand vegetation, which in turn affects the change process of soil organic carbon. We therefore selected two typical coniferous plantations in southwest China, <i>Pinus massoniana</i> and <i>Cunninghamia lanceolate,</i> to explore the effects of CNT on soil enzyme activities and soil organic carbon, and the relationship between them is explored through comparative study. Compared with control stands (CCK and PCK), CNT enhanced soil organic carbon; the content of water-soluble organic carbon in the 0–10 cm soil layer of the transformed <i>C. lanceolata</i> plantations (CCN) is 81.29% higher than those in the control stands (<i>p</i> < 0.05); the contents of particulate organic carbon and water-soluble organic carbon in the 10–30 cm soil layer are 95.42% and 48.68% higher than those in the control stands (<i>p</i> < 0.05), respectively; after the CNT, the protease, urease, and acid phosphatase in <i>C. lanceolata</i> plantations were higher than control stands, while protease and catalase in <i>P. massoniana</i> plantations were higher than control stands. Correlation analysis showed that catalase and protease were more closely related to organic carbon components than other organic enzymes; redundancy analysis (RDA) results show that pH and total nitrogen are key factors that cause changes in carbon fractions after the CNT. In general, CNT enhanced soil organic carbon in coniferous plantations, which was more conducive to soil organic carbon accumulation but had a negative effect on soil organic carbon stability to a certain extent. Therefore, the effect of tree species configuration on soil carbon stability components should be considered in the forest management practice. |
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| institution | Directory Open Access Journal |
| issn | 1999-4907 |
| language | English |
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| spelling | doaj.art-053719c17c7847b3a1e2b9639f89baac2023-11-23T16:40:33ZengMDPI AGForests1999-49072022-06-0113687210.3390/f13060872Effects of Close-to-Nature Transformation on Soil Enzyme Activities and Organic Carbon Fractions in <i>Cuninghamia lanceolata</i> and <i>Pinus massoniana</i> PlantationsWeiwei Shu0Angang Ming1Jihui Zhang2Hua Li3Huilin Min4Junxu Ma5Kun Yang6Zhongguo Li7Ji Zeng8Juling Wei9Zhaoying Li10Yi Tao11Experimental Center of Tropical Forestry, Chinese Academy of Forestry, Pingxiang 532600, ChinaExperimental Center of Tropical Forestry, Chinese Academy of Forestry, Pingxiang 532600, ChinaGuangxi Forest Inventory and Planning Institute, Nanning 530000, ChinaExperimental Center of Tropical Forestry, Chinese Academy of Forestry, Pingxiang 532600, ChinaExperimental Center of Tropical Forestry, Chinese Academy of Forestry, Pingxiang 532600, ChinaExperimental Center of Tropical Forestry, Chinese Academy of Forestry, Pingxiang 532600, ChinaExperimental Center of Tropical Forestry, Chinese Academy of Forestry, Pingxiang 532600, ChinaExperimental Center of Tropical Forestry, Chinese Academy of Forestry, Pingxiang 532600, ChinaExperimental Center of Tropical Forestry, Chinese Academy of Forestry, Pingxiang 532600, ChinaExperimental Center of Tropical Forestry, Chinese Academy of Forestry, Pingxiang 532600, ChinaExperimental Center of Tropical Forestry, Chinese Academy of Forestry, Pingxiang 532600, ChinaExperimental Center of Tropical Forestry, Chinese Academy of Forestry, Pingxiang 532600, ChinaSoil enzymes are involved in the process of mineralization of soil organic matters. The close-to-nature transformation (CNT) of plantations changes the soil enzyme activities by changing the composition of stand vegetation, which in turn affects the change process of soil organic carbon. We therefore selected two typical coniferous plantations in southwest China, <i>Pinus massoniana</i> and <i>Cunninghamia lanceolate,</i> to explore the effects of CNT on soil enzyme activities and soil organic carbon, and the relationship between them is explored through comparative study. Compared with control stands (CCK and PCK), CNT enhanced soil organic carbon; the content of water-soluble organic carbon in the 0–10 cm soil layer of the transformed <i>C. lanceolata</i> plantations (CCN) is 81.29% higher than those in the control stands (<i>p</i> < 0.05); the contents of particulate organic carbon and water-soluble organic carbon in the 10–30 cm soil layer are 95.42% and 48.68% higher than those in the control stands (<i>p</i> < 0.05), respectively; after the CNT, the protease, urease, and acid phosphatase in <i>C. lanceolata</i> plantations were higher than control stands, while protease and catalase in <i>P. massoniana</i> plantations were higher than control stands. Correlation analysis showed that catalase and protease were more closely related to organic carbon components than other organic enzymes; redundancy analysis (RDA) results show that pH and total nitrogen are key factors that cause changes in carbon fractions after the CNT. In general, CNT enhanced soil organic carbon in coniferous plantations, which was more conducive to soil organic carbon accumulation but had a negative effect on soil organic carbon stability to a certain extent. Therefore, the effect of tree species configuration on soil carbon stability components should be considered in the forest management practice.https://www.mdpi.com/1999-4907/13/6/872close-to-nature transformationenzyme activitiesorganic carbon fractions |
| spellingShingle | Weiwei Shu Angang Ming Jihui Zhang Hua Li Huilin Min Junxu Ma Kun Yang Zhongguo Li Ji Zeng Juling Wei Zhaoying Li Yi Tao Effects of Close-to-Nature Transformation on Soil Enzyme Activities and Organic Carbon Fractions in <i>Cuninghamia lanceolata</i> and <i>Pinus massoniana</i> Plantations Forests close-to-nature transformation enzyme activities organic carbon fractions |
| title | Effects of Close-to-Nature Transformation on Soil Enzyme Activities and Organic Carbon Fractions in <i>Cuninghamia lanceolata</i> and <i>Pinus massoniana</i> Plantations |
| title_full | Effects of Close-to-Nature Transformation on Soil Enzyme Activities and Organic Carbon Fractions in <i>Cuninghamia lanceolata</i> and <i>Pinus massoniana</i> Plantations |
| title_fullStr | Effects of Close-to-Nature Transformation on Soil Enzyme Activities and Organic Carbon Fractions in <i>Cuninghamia lanceolata</i> and <i>Pinus massoniana</i> Plantations |
| title_full_unstemmed | Effects of Close-to-Nature Transformation on Soil Enzyme Activities and Organic Carbon Fractions in <i>Cuninghamia lanceolata</i> and <i>Pinus massoniana</i> Plantations |
| title_short | Effects of Close-to-Nature Transformation on Soil Enzyme Activities and Organic Carbon Fractions in <i>Cuninghamia lanceolata</i> and <i>Pinus massoniana</i> Plantations |
| title_sort | effects of close to nature transformation on soil enzyme activities and organic carbon fractions in i cuninghamia lanceolata i and i pinus massoniana i plantations |
| topic | close-to-nature transformation enzyme activities organic carbon fractions |
| url | https://www.mdpi.com/1999-4907/13/6/872 |
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