Optimization of nitrogen, water and salinity for maximizing soil organic carbon in coastal wetlands
Maintaining carbon sequestration is becoming increasingly significant and challenging during coastal wetland carbon restoration. To clear the influence of water, nitrogen and salinity on soil organic carbon (SOC), indoor incubation experiments were carried out, where soil from wetlands with dominant...
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| Format: | Article |
| Language: | English |
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Elsevier
2022-08-01
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| Series: | Global Ecology and Conservation |
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| Online Access: | http://www.sciencedirect.com/science/article/pii/S2351989422001482 |
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| author | Mengxuan He Xunqiang Mo Weiqing Meng Hongyuan Li Wenbin Xu Zhimei Huang |
| author_facet | Mengxuan He Xunqiang Mo Weiqing Meng Hongyuan Li Wenbin Xu Zhimei Huang |
| author_sort | Mengxuan He |
| collection | DOAJ |
| description | Maintaining carbon sequestration is becoming increasingly significant and challenging during coastal wetland carbon restoration. To clear the influence of water, nitrogen and salinity on soil organic carbon (SOC), indoor incubation experiments were carried out, where soil from wetlands with dominant vegetation of Phragmites australis and Suaeda salsa were sampled and Box-Behnken central composite design was used to maximize SOC. The results indicated that:1) water, nitrogen and salinity altered soil chemical and physical properties, then significantly affect SOC in Phragmites australis wetland, but possessed little impact on Suaeda salsa wetland. 2) Optimal condition was determined with water of − 5.49 cm, salinity of 3.52 ds/m and nitrogen of 13.40 g/m2 for the biggest SOC of 8.6 g/kg in Phragmites australis wetland, whereas in Suaeda salsa wetland, SOC reached out to 8.7 g/kg with water of − 4.09 cm, salinity of 2.51 ds/m and nitrogen of 16.61 g/m2. 3) Nitrogen and water were determining factors on SOC. In Phragmites australis wetland, SOC was substantially influenced by water, nitrogen and its interaction, while in Suaeda salsa wetland, water and nitrogen displayed no direct influence, but its interactive effect worked. 4) Quadratic models were found the most desirable to reveal connections between SOC and three factors (p < 0.05). Our finding could provide support for maintaining soil carbon sink in coastal wetland restoration management. |
| first_indexed | 2024-04-12T11:25:25Z |
| format | Article |
| id | doaj.art-5db6b097e728415aab0f4eca3f794924 |
| institution | Directory Open Access Journal |
| issn | 2351-9894 |
| language | English |
| last_indexed | 2024-04-12T11:25:25Z |
| publishDate | 2022-08-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Global Ecology and Conservation |
| spelling | doaj.art-5db6b097e728415aab0f4eca3f7949242022-12-22T03:35:14ZengElsevierGlobal Ecology and Conservation2351-98942022-08-0136e02146Optimization of nitrogen, water and salinity for maximizing soil organic carbon in coastal wetlandsMengxuan He0Xunqiang Mo1Weiqing Meng2Hongyuan Li3Wenbin Xu4Zhimei Huang5School of Geographic and Environmental Science, Tianjin Normal University, Tianjin 300387, ChinaSchool of Geographic and Environmental Science, Tianjin Normal University, Tianjin 300387, China; Corresponding author.School of Geographic and Environmental Science, Tianjin Normal University, Tianjin 300387, ChinaCollege of Environment Science and Engineering, Nankai University, Tianjin 300350, ChinaSchool of Geographic and Environmental Science, Tianjin Normal University, Tianjin 300387, ChinaSchool of Geographic and Environmental Science, Tianjin Normal University, Tianjin 300387, ChinaMaintaining carbon sequestration is becoming increasingly significant and challenging during coastal wetland carbon restoration. To clear the influence of water, nitrogen and salinity on soil organic carbon (SOC), indoor incubation experiments were carried out, where soil from wetlands with dominant vegetation of Phragmites australis and Suaeda salsa were sampled and Box-Behnken central composite design was used to maximize SOC. The results indicated that:1) water, nitrogen and salinity altered soil chemical and physical properties, then significantly affect SOC in Phragmites australis wetland, but possessed little impact on Suaeda salsa wetland. 2) Optimal condition was determined with water of − 5.49 cm, salinity of 3.52 ds/m and nitrogen of 13.40 g/m2 for the biggest SOC of 8.6 g/kg in Phragmites australis wetland, whereas in Suaeda salsa wetland, SOC reached out to 8.7 g/kg with water of − 4.09 cm, salinity of 2.51 ds/m and nitrogen of 16.61 g/m2. 3) Nitrogen and water were determining factors on SOC. In Phragmites australis wetland, SOC was substantially influenced by water, nitrogen and its interaction, while in Suaeda salsa wetland, water and nitrogen displayed no direct influence, but its interactive effect worked. 4) Quadratic models were found the most desirable to reveal connections between SOC and three factors (p < 0.05). Our finding could provide support for maintaining soil carbon sink in coastal wetland restoration management.http://www.sciencedirect.com/science/article/pii/S2351989422001482Soil organic carbonWaterNitrogenSalinityResponse Surface Methodology |
| spellingShingle | Mengxuan He Xunqiang Mo Weiqing Meng Hongyuan Li Wenbin Xu Zhimei Huang Optimization of nitrogen, water and salinity for maximizing soil organic carbon in coastal wetlands Global Ecology and Conservation Soil organic carbon Water Nitrogen Salinity Response Surface Methodology |
| title | Optimization of nitrogen, water and salinity for maximizing soil organic carbon in coastal wetlands |
| title_full | Optimization of nitrogen, water and salinity for maximizing soil organic carbon in coastal wetlands |
| title_fullStr | Optimization of nitrogen, water and salinity for maximizing soil organic carbon in coastal wetlands |
| title_full_unstemmed | Optimization of nitrogen, water and salinity for maximizing soil organic carbon in coastal wetlands |
| title_short | Optimization of nitrogen, water and salinity for maximizing soil organic carbon in coastal wetlands |
| title_sort | optimization of nitrogen water and salinity for maximizing soil organic carbon in coastal wetlands |
| topic | Soil organic carbon Water Nitrogen Salinity Response Surface Methodology |
| url | http://www.sciencedirect.com/science/article/pii/S2351989422001482 |
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