Horizontal and vertical distributions of estuarine soil total organic carbon and total nitrogen under complex land surface characteristics
Soil total organic carbon (TOC) and total nitrogen (TN) in estuarine areas show distinct heterogeneities in horizontal and vertical distributions due to complex influencing factors, and clarifying the horizontal and vertical distributions and their influencing factors is of great significance. In th...
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| Format: | Article |
| Language: | English |
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Elsevier
2020-12-01
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| Series: | Global Ecology and Conservation |
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| Online Access: | http://www.sciencedirect.com/science/article/pii/S235198942030809X |
| _version_ | 1818640308773060608 |
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| author | Dahai Liu Yuan Chi |
| author_facet | Dahai Liu Yuan Chi |
| author_sort | Dahai Liu |
| collection | DOAJ |
| description | Soil total organic carbon (TOC) and total nitrogen (TN) in estuarine areas show distinct heterogeneities in horizontal and vertical distributions due to complex influencing factors, and clarifying the horizontal and vertical distributions and their influencing factors is of great significance. In this study, the eastern Chongming Island in the Yangtze River estuary in China was selected as the study area, and the horizontal and vertical distributions of soil TOC and TN in different layers of 0–20 cm, 20–40 cm, and 40–60 cm were exhibited in maps and analyzed in different community types. Then, a total of 17 potential factors in aspects of soil, vegetation, atmosphere, landscape, and position were adopted and their single and synergistic effects on the spatial patterns of TOC and TN were identified from different perspectives. Results indicated that the mean values of TOC and TN in the entire study area decreased from surface to bottom layers. TOC and TN showed distinct spatial heterogeneities in different sampling sites and community types; they were generally high in the inner part and low in the alongshore areas in surface soils and showed opposite spatial characteristics in bottom soils; and woodland showed the highest TOC and TN in surface soils and the lowest values in bottom soils of different community types. TOC and TN in different layers, as well as the variations of TOC and TN across layers, exhibited specific and different spatial patterns under the complex factors. In soil factors, pH and available phosphorus showed the closest correlations with TOC and TN in different layers; in land surface factors, plant diversity and growth condition contributed the most to the horizontal distribution while plant growth condition and bare soil index exerted the highest influences on the vertical distribution. |
| first_indexed | 2024-12-16T23:09:13Z |
| format | Article |
| id | doaj.art-6ca3f536d67d4ccbab96a7d8ce6eb54d |
| institution | Directory Open Access Journal |
| issn | 2351-9894 |
| language | English |
| last_indexed | 2024-12-16T23:09:13Z |
| publishDate | 2020-12-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Global Ecology and Conservation |
| spelling | doaj.art-6ca3f536d67d4ccbab96a7d8ce6eb54d2022-12-21T22:12:28ZengElsevierGlobal Ecology and Conservation2351-98942020-12-0124e01268Horizontal and vertical distributions of estuarine soil total organic carbon and total nitrogen under complex land surface characteristicsDahai Liu0Yuan Chi1First Institute of Oceanography, Ministry of Natural Resources, Qingdao, Shandong Province, 266061, ChinaFirst Institute of Oceanography, Ministry of Natural Resources, Qingdao, Shandong Province, 266061, China; Key Laboratory of Coastal Zone Exploitation and Protection, Ministry of Natural Resources, Nanjing, Jiangsu Province, 210024, China; Corresponding author. First Institute of Oceanography, Ministry of Natural Resources, Key Laboratory of Coastal Zone Exploitation and Protection, Ministry of Natural Resources, No.6, Xianxialing Road, Qingdao, Shandong Province, 266061, PR China.Soil total organic carbon (TOC) and total nitrogen (TN) in estuarine areas show distinct heterogeneities in horizontal and vertical distributions due to complex influencing factors, and clarifying the horizontal and vertical distributions and their influencing factors is of great significance. In this study, the eastern Chongming Island in the Yangtze River estuary in China was selected as the study area, and the horizontal and vertical distributions of soil TOC and TN in different layers of 0–20 cm, 20–40 cm, and 40–60 cm were exhibited in maps and analyzed in different community types. Then, a total of 17 potential factors in aspects of soil, vegetation, atmosphere, landscape, and position were adopted and their single and synergistic effects on the spatial patterns of TOC and TN were identified from different perspectives. Results indicated that the mean values of TOC and TN in the entire study area decreased from surface to bottom layers. TOC and TN showed distinct spatial heterogeneities in different sampling sites and community types; they were generally high in the inner part and low in the alongshore areas in surface soils and showed opposite spatial characteristics in bottom soils; and woodland showed the highest TOC and TN in surface soils and the lowest values in bottom soils of different community types. TOC and TN in different layers, as well as the variations of TOC and TN across layers, exhibited specific and different spatial patterns under the complex factors. In soil factors, pH and available phosphorus showed the closest correlations with TOC and TN in different layers; in land surface factors, plant diversity and growth condition contributed the most to the horizontal distribution while plant growth condition and bare soil index exerted the highest influences on the vertical distribution.http://www.sciencedirect.com/science/article/pii/S235198942030809XTotal organic carbonTotal nitrogenHorizontal distributionVertical distributionComplex factorsEstuary |
| spellingShingle | Dahai Liu Yuan Chi Horizontal and vertical distributions of estuarine soil total organic carbon and total nitrogen under complex land surface characteristics Global Ecology and Conservation Total organic carbon Total nitrogen Horizontal distribution Vertical distribution Complex factors Estuary |
| title | Horizontal and vertical distributions of estuarine soil total organic carbon and total nitrogen under complex land surface characteristics |
| title_full | Horizontal and vertical distributions of estuarine soil total organic carbon and total nitrogen under complex land surface characteristics |
| title_fullStr | Horizontal and vertical distributions of estuarine soil total organic carbon and total nitrogen under complex land surface characteristics |
| title_full_unstemmed | Horizontal and vertical distributions of estuarine soil total organic carbon and total nitrogen under complex land surface characteristics |
| title_short | Horizontal and vertical distributions of estuarine soil total organic carbon and total nitrogen under complex land surface characteristics |
| title_sort | horizontal and vertical distributions of estuarine soil total organic carbon and total nitrogen under complex land surface characteristics |
| topic | Total organic carbon Total nitrogen Horizontal distribution Vertical distribution Complex factors Estuary |
| url | http://www.sciencedirect.com/science/article/pii/S235198942030809X |
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