Soil Aggregate Stability and Organic Carbon Content among Different Forest Types in Temperate Ecosystems in Northeastern China
Soil aggregates play a crucial role in substance and energy cycles in soil systems. The fixation of soil organic carbon (SOC) is closely tied to the safeguarding mechanisms of soil aggregates. Carbon fixation involves the conversion of atmospheric carbon dioxide into organic molecules by autotrophic...
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MDPI AG
2024-02-01
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| Series: | Forests |
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| Online Access: | https://www.mdpi.com/1999-4907/15/2/279 |
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| author | Yanan Liu Xin Sui Henian Hua Xu Liu Qiuyang Chang Ruiting Xu Mengsha Li Liqiang Mu |
| author_facet | Yanan Liu Xin Sui Henian Hua Xu Liu Qiuyang Chang Ruiting Xu Mengsha Li Liqiang Mu |
| author_sort | Yanan Liu |
| collection | DOAJ |
| description | Soil aggregates play a crucial role in substance and energy cycles in soil systems. The fixation of soil organic carbon (SOC) is closely tied to the safeguarding mechanisms of soil aggregates. Carbon fixation involves the conversion of atmospheric carbon dioxide into organic molecules by autotrophic organisms. Soil aggregates play a significant role in carbon stabilization, allowing for the physical occlusion of SOC. This study focuses on five forest types, <i>Betula platyphylla</i>, <i>Betula dahurica</i>, <i>Quercus mongolica</i>, <i>Larix gmelinii</i>, and mixed forests comprised of <i>Larix gmelinii</i> and <i>Quercus mongolica</i>, in the Heilongjiang Central Station Black-billed Capercaillie National Nature Reserve, northeast of China. This study investigated the soil aggregate stability (SAS) (water sieving) and aggregate-associated organic carbon (AAOC) at different soil depths in five forest types. Our findings demonstrated that fine macro-aggregates (0.25–2 mm) were the main types of soil aggregates among all the forest types. The SAS gradually decreased with increasing soil depth. Notably, broad-leaved forests exhibited relatively high soil stability. The fine macro-aggregates (0.25–2 mm) had the highest AAOC content, and the AAOC level was highest in the topsoil layer. The SAS and AOCC levels of the <i>Betula platyphylla</i> forest and <i>Betula dahurica</i> forest were higher than those of other forest types and were significantly affected by the forest type, soil depth, and soil physicochemical properties. Collectively, our findings reveal the key factors influencing aggregate stability and the variations in soil organic carbon content in different forest types. These observations provide a basis for studying the mechanisms of soil aggregate carbon sequestration, as well as for the sustainable development of forest soil carbon sequestration and emission reduction. |
| first_indexed | 2024-03-07T22:32:59Z |
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| issn | 1999-4907 |
| language | English |
| last_indexed | 2024-03-07T22:32:59Z |
| publishDate | 2024-02-01 |
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| record_format | Article |
| series | Forests |
| spelling | doaj.art-cef5f849701c446c83ce61443f3e642b2024-02-23T15:16:49ZengMDPI AGForests1999-49072024-02-0115227910.3390/f15020279Soil Aggregate Stability and Organic Carbon Content among Different Forest Types in Temperate Ecosystems in Northeastern ChinaYanan Liu0Xin Sui1Henian Hua2Xu Liu3Qiuyang Chang4Ruiting Xu5Mengsha Li6Liqiang Mu7Key Laboratory of Sustainable Forest Ecosystem Management—Ministry of Education, School of Forestry, Northeast Forestry University, Harbin 150040, ChinaEngineering Research Center of Agricultural Microbiology Technology, Ministry of Education & Heilongjiang Provincial Key Laboratory of Ecological Restoration and Resource Utilization for Cold Region & Key Laboratory of Microbiology, College of Heilongjiang Province & School of Life Sciences, Heilongjiang University, Harbin 150080, ChinaKey Laboratory of Sustainable Forest Ecosystem Management—Ministry of Education, School of Forestry, Northeast Forestry University, Harbin 150040, ChinaKey Laboratory of Sustainable Forest Ecosystem Management—Ministry of Education, School of Forestry, Northeast Forestry University, Harbin 150040, ChinaKey Laboratory of Sustainable Forest Ecosystem Management—Ministry of Education, School of Forestry, Northeast Forestry University, Harbin 150040, ChinaKey Laboratory of Sustainable Forest Ecosystem Management—Ministry of Education, School of Forestry, Northeast Forestry University, Harbin 150040, ChinaKey Laboratory of Sustainable Forest Ecosystem Management—Ministry of Education, School of Forestry, Northeast Forestry University, Harbin 150040, ChinaKey Laboratory of Sustainable Forest Ecosystem Management—Ministry of Education, School of Forestry, Northeast Forestry University, Harbin 150040, ChinaSoil aggregates play a crucial role in substance and energy cycles in soil systems. The fixation of soil organic carbon (SOC) is closely tied to the safeguarding mechanisms of soil aggregates. Carbon fixation involves the conversion of atmospheric carbon dioxide into organic molecules by autotrophic organisms. Soil aggregates play a significant role in carbon stabilization, allowing for the physical occlusion of SOC. This study focuses on five forest types, <i>Betula platyphylla</i>, <i>Betula dahurica</i>, <i>Quercus mongolica</i>, <i>Larix gmelinii</i>, and mixed forests comprised of <i>Larix gmelinii</i> and <i>Quercus mongolica</i>, in the Heilongjiang Central Station Black-billed Capercaillie National Nature Reserve, northeast of China. This study investigated the soil aggregate stability (SAS) (water sieving) and aggregate-associated organic carbon (AAOC) at different soil depths in five forest types. Our findings demonstrated that fine macro-aggregates (0.25–2 mm) were the main types of soil aggregates among all the forest types. The SAS gradually decreased with increasing soil depth. Notably, broad-leaved forests exhibited relatively high soil stability. The fine macro-aggregates (0.25–2 mm) had the highest AAOC content, and the AAOC level was highest in the topsoil layer. The SAS and AOCC levels of the <i>Betula platyphylla</i> forest and <i>Betula dahurica</i> forest were higher than those of other forest types and were significantly affected by the forest type, soil depth, and soil physicochemical properties. Collectively, our findings reveal the key factors influencing aggregate stability and the variations in soil organic carbon content in different forest types. These observations provide a basis for studying the mechanisms of soil aggregate carbon sequestration, as well as for the sustainable development of forest soil carbon sequestration and emission reduction.https://www.mdpi.com/1999-4907/15/2/279forest typesoil aggregatesstabilityorganic carbonsoil physical and chemical properties |
| spellingShingle | Yanan Liu Xin Sui Henian Hua Xu Liu Qiuyang Chang Ruiting Xu Mengsha Li Liqiang Mu Soil Aggregate Stability and Organic Carbon Content among Different Forest Types in Temperate Ecosystems in Northeastern China Forests forest type soil aggregates stability organic carbon soil physical and chemical properties |
| title | Soil Aggregate Stability and Organic Carbon Content among Different Forest Types in Temperate Ecosystems in Northeastern China |
| title_full | Soil Aggregate Stability and Organic Carbon Content among Different Forest Types in Temperate Ecosystems in Northeastern China |
| title_fullStr | Soil Aggregate Stability and Organic Carbon Content among Different Forest Types in Temperate Ecosystems in Northeastern China |
| title_full_unstemmed | Soil Aggregate Stability and Organic Carbon Content among Different Forest Types in Temperate Ecosystems in Northeastern China |
| title_short | Soil Aggregate Stability and Organic Carbon Content among Different Forest Types in Temperate Ecosystems in Northeastern China |
| title_sort | soil aggregate stability and organic carbon content among different forest types in temperate ecosystems in northeastern china |
| topic | forest type soil aggregates stability organic carbon soil physical and chemical properties |
| url | https://www.mdpi.com/1999-4907/15/2/279 |
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