文献类型：期刊文献

英文题名：Geographical-Scale Evidence Reveals Plant Nutrient as an Effective Indicator for Coastal Carbon Emissions

作者：Xiong, Jing[1,2,3,4] Shao, Xuexin[1,3,4] Xu, Haidong[5] Wu, Ming[1,3,4]

第一作者：Xiong, Jing

通信作者：Shao, XX[1];Wu, M[1];Shao, XX[2];Wu, M[2];Shao, XX[3];Wu, M[3]

机构：[1]Chinese Acad Forestry, Res Inst Subtrop Forestry, Hangzhou 311400, Peoples R China;[2]Jinggangshan Univ, Sch Life Sci, Jian 343009, Peoples R China;[3]Chinese Acad Forestry, Res Inst Subtrop Forestry, Wetland Ecosyst Res Stn Hangzhou Bay, Hangzhou 311400, Peoples R China;[4]State Key Lab Wetland Conservat & Restorat, Beijing 100080, Peoples R China;[5]Shandong Univ Aeronaut, Yellow River Delta Ecol Environm Res Ctr, Binzhou 256603, Peoples R China

年份：2025

卷号：14

期号：18

外文期刊名：PLANTS-BASEL

收录：;Scopus(收录号：2-s2.0-105017427814);WOS:【SCI-EXPANDED(收录号:WOS:001579899700001)】；

基金：This study was financially supported by the Zhejiang Provincial Science and Technology Program (2023C03120; 2024C02002); the Zhejiang Province Commonwealth Projects (LTGS24C160001); the Foundation of Research Institute of Subtropical Forestry, Chinese Academy of Forestry (RISFZ-2023-01); the National Natural Science Foundation of China (31870597); and the Cooperation of Zhejiang Province and the Chinese Academy of Forestry (2023SY11 and 2021SY03).

语种：英文

外文关键词：methane; carbon dioxide; plant trait; coastal wetland; geographical-scale

摘要：Plant traits could help in designing feasible strategies to mitigate global change in inland wetlands, but the correlations between plant traits and carbon emissions in coastal wetlands remain unclear. Here, we investigated the plant traits (including nutrient, structural, and biomass traits) and environmental conditions (including climate and soil properties) and determined the soil carbon emissions (methane (CH4), carbon dioxide (CO2), and their temperature sensitivities (Q10 value)) from the soils of 90 coastal herbaceous wetlands differing in land use types along China's coastline. We further tested how environmental conditions affected plant traits and how these traits then altered carbon emissions. We found that plant traits had a greater effect on CH4 and CO2 emissions than on their Q10 values, with nutrient traits being the key drivers in coastal herbaceous wetlands in China. In general, coastal herbaceous wetlands with larger leaf C and N contents combined with a lower leaf N:P ratio tended to have higher CH4 emission; those with larger leaf C and P contents combined with a lower leaf N:P ratio tended to have higher CO2 emission; and those with higher leaf N content and N:P ratio combined with a lower leaf C:P ratio tended to have higher Q10 values of both CH4 and CO2. Notably, the predictive power of plant traits in coastal herbaceous wetlands varied significantly across heterogeneous environments influenced by climate and land use. Our results highlight the critical role of plant nutrient traits in driving soil carbon emissions and provide practical insights into understanding coastal carbon dynamics under pressures from climate and land use changes (e.g., coastal reclamation and plant invasion).