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Effects of fresh-salt water interaction on spatial variations of soil organic carbon in reed wetland of Yellow River Estuary.
Yu, Miao; Guo, Xue-Lian; Li, Yun-Zhao; Zhang, Kun; DU, Zhao-Hong.
Afiliación
  • Yu M; National Plateau Wetlands Research Center, College of Wetland, Southwest Forestry University, Kunming 650224, China.
  • Guo XL; National Plateau Wetlands Research Center, College of Wetland, Southwest Forestry University, Kunming 650224, China.
  • Li YZ; Institute for Advanced Study of Coastal Ecology, Ludong University, Yantai 264025, Shandong, China.
  • Zhang K; National Plateau Wetlands Research Center, College of Wetland, Southwest Forestry University, Kunming 650224, China.
  • DU ZH; Institute for Advanced Study of Coastal Ecology, Ludong University, Yantai 264025, Shandong, China.
Ying Yong Sheng Tai Xue Bao ; 35(2): 415-423, 2024 Feb.
Article en En | MEDLINE | ID: mdl-38523099
ABSTRACT
Estuarine wetlands exhibit significant interaction between fresh and salt water, with long-term carbon sequestration capability. We set up 60 sampling sites in the reed wetlands of the fresh-salt water interaction zone of the Yellow River Estuary, covering four different zones of the weak-intensity fresh-salt water interaction zone (WIZ), medium-intensity fresh-salt water interaction zone (MIZ), high-intensity interaction fresh-salt water zone (HIZ) and strong-intensity fresh-salt water interaction zone (SIZ). We investigated how fresh-salt water interaction affected the spatial variation of soil organic carbon (SOC) storage. The results showed that the area of reed wetland accounted for 17.8% of the total area of the fresh-salt water interaction zone the Yellow River Estuary, which mainly distributed in the WIZ and MIZ. The SOC content of reed wetland in the fresh-salt water interaction zone ranged from 1.09 to 3.65 g·kg-1, the SOC density was between 1.85-5.84 kg·m-2, and the SOC storage was (17.32±3.64)×104 t. The SOC content and SOC density decreased with increasing fresh-salt water interaction. There were significant differences in surface SOC content between different subzones of the fresh-salt water interaction zone. The surface SOC content decreased significantly with the increases of fresh-salt water interaction intensity. SOC density was positively correlated with SOC, TN, NH4+-N, and biomass, but negatively correlated with salt ions, soil bulk density, pH, and EC. SOC storage in the 0-30 cm soil layer accounted for 50.9%-64.2% of that in the 0-60 cm soil layer, while SOC storage in the 0-60 cm soil layer occupied 19.1%-37.7% of that in the 0-400 cm soil layer. The results could provide a scientific basis for accurately evaluating SOC storage of estuarine wetlands, improving carbon sink function and wetland management.
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Texto completo: 1 Colección: 01-internacional Base de datos: MEDLINE Asunto principal: Ríos / Humedales País/Región como asunto: Asia Idioma: En Revista: Ying Yong Sheng Tai Xue Bao Asunto de la revista: SAUDE AMBIENTAL Año: 2024 Tipo del documento: Article País de afiliación: China Pais de publicación: China
Texto completo
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Texto completo: 1 Colección: 01-internacional Base de datos: MEDLINE Asunto principal: Ríos / Humedales País/Región como asunto: Asia Idioma: En Revista: Ying Yong Sheng Tai Xue Bao Asunto de la revista: SAUDE AMBIENTAL Año: 2024 Tipo del documento: Article País de afiliación: China Pais de publicación: China