文献类型：期刊文献

英文题名：Increasing carbon and nutrient burial rates in mangroves coincided with coastal aquaculture development and water eutrophication in NE Hainan, China

作者：Jiang, Zhongmao[1] Sanders, Christian J.[2] Xin, Kun[1] Wang, Faming[3] Sheng, Nong[1] Xiong, Yanmei[1,4]

第一作者：姜仲茂

通信作者：Xiong, YM[1];Xiong, YM[2]

机构：[1]Chinese Acad Forestry, Res Inst Trop Forestry, Hainan Dongzhaigang Mangrove Wetland Ecosyst Obser, Guangzhou 510520, Peoples R China;[2]Southern Cross Univ, Sch Environm Sci & Engn, Natl Marine Sci Ctr, Coffs Harbour, NSW 2450, Australia;[3]Southern Marine Sci & Engn Guangdong Lab Guangzhou, CAS Engn Lab Ecol Restorat Isl & Coastal Ecosyst, Xiaoliang Res Stn Trop Coastal Ecosyst, South China Bot Garden, Guangzhou 510650, Peoples R China;[4]682 Guangshan Yi Rd, Guangzhou 510520, Peoples R China

年份：2024

卷号：199

外文期刊名：MARINE POLLUTION BULLETIN

收录：;EI(收录号：20235215282225);Scopus(收录号：2-s2.0-85180413718);WOS:【SCI-EXPANDED(收录号:WOS:001141051900001)】；

基金：This study was funded by the Basic and Applied Basic Research Foundation of Guangdong Province (2022A1515010550) , National Key Research and Development Program of China (20230207) and Basic and Applied Basic Research Foundation of Guangzhou City (202201011486) . F.W was supported by the Science and Technology Planning Project of Guangdong Province (2021B1212110004) , National Key Research and Development Program of China (2023YFE0113100, 2023YFF1300018) , Guangdong Basic and Applied Basic Research Foundation (2021B1515020011) , CAS Project for Young Scientists in Basic Research (YSBR-037) and Youth Innovation Promotion Association (2021347) .

语种：英文

外文关键词：Blue carbon; Coastal wetland; Carbon accumulation rate; Geomorphologic setting; Sediment accretion rate

摘要：Mangroves sequester and store large area-specific quantities of blue carbon (C) and essential nutrients such as nitrogen (N) and phosphorous (P). Quantifying C and nutrient burial rates in mangroves across a centennial time span and relating these rates to mangrove habitat is fundamental for elucidating the role of mangroves in carbon and nutrient budgets and their responses to environmental changes. However, relevant data are very limited in China. In this study, we used the radionuclides (210Pb and 137Cs) to determine chronologies and C, N and P burial rates in two mangrove forests located at different geomorphologic settings in NE Hainan Island, China. We found that the temporal patterns of C, N and P burial rates since 1900 fitted a quadratic function with a notable increase after 1960s in both mangroves, which coincided with the rapid development of coastal aquaculture since 1960s in NE Hainan and the subsequent coastal water eutrophication in this area. Sediment accretion rate (SAR) and mass accumulation rate (MAR) stayed relatively steady in the open-coastal mangroves, while they increased exponentially in the estuarine mangroves since 1900. The estuarine mangroves had significantly higher SAR and C, N and P burial rates than the open-coastal mangroves. C, N and P burial rates averaged at 141.52 g m ? 2 a ? 1, 6.27 g m ? 2 a ? 1 and 1.14 g m ? 2 a ? 1, respectively in the estuarine core, and these rates averaged at 61.71 g m ? 2 a ? 1, 3.71 g m ? 2 a ? 1 and 0.43 g m ? 2 a ? 1, respectively in the open-coastal core. The results suggest that estuarine mangroves may be more capable of surviving accelerating sea level rise under climate change and play a greater role in C accumulation and nutrient filtering under anthropogenic nutrient enrichment than marine-dominated mangroves. Blue C burial may be enhanced by coastal water eutrophication, but such a relationship needs to be tested in further studies.