Academic Journal
Typhoon-induced increases in porewater nutrient concentrations and CO2 and CH4 emissions associated with salinity and carbon intrusion in a subtropical tidal wetland in China: a mesocosm study
| العنوان: | Typhoon-induced increases in porewater nutrient concentrations and CO2 and CH4 emissions associated with salinity and carbon intrusion in a subtropical tidal wetland in China: a mesocosm study |
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| المؤلفون: | Wang, Weiqi, Sardans i Galobart, Jordi, Tong, Chuan, Wang, Chun, Ouyang, Linmei, Bartrons Vilamala, Mireia, Peñuelas, Josep |
| سنة النشر: | 2016 |
| المجموعة: | Universitat Autònoma de Barcelona: Dipòsit Digital de Documents de la UAB |
| مصطلحات موضوعية: | China, Decomposition, Litter, Nutrient release, Stoichiometry, Tropical storms, Typhoon |
| الوصف: | Litter production and decomposition are key processes controlling the capacity of wetland to store and cycle carbon (C) and nutrients. Typhoons deposit large amounts of green and semi-green (between green and withered) plant tissues and withered litter(normal litter) on wetland soils, generating a pulse of litter production. Climatic models project an increase in typhoon intensity and frequency. Elucidating the impacts of typhoons on C, N and P cycles and storage capacities in subtropical and tropical wetland areas is thus important. We analyzed the patterns and changes of litter decomposition after a typhoon in the Minjiang River estuary in southeastern China. Green litter decomposed the fastest, and the loss of mass did not differ significantly between semi-green litter, withered litter and mixed litter(all soil litter after a typhoon). During the decomposition process the remaining green litter had the highest, and withered litter the lowest N and P concentrations. The biomass loss rate of litter during the studied period was related to the initial litter N and P concentrations. Remaining litter generally increased its N:P ratio during decomposition. The ratio of the released N and P was consequently lower than the initial N:P ratio in all litter types. The typhoon enhanced the release of C, N and P from the litter(884, 12.3 and 6 kg ha−1 , respectively) by 264 days after the typhoon. The soil was accordingly enriched with organic matter and nutrients for several months, which should favor microbial growth rates(higher C, N and P availability and lower C:nutrient and N:P ratios) and increase the rates of C and nutrient cycling. If the frequency and/or intensity of typhoons increase, a constant increase in the release of N and P to the soil with lower N:P ratios could change the N and P cycles in wetlands and provide better conditions for the spread of fastgrowing species. |
| نوع الوثيقة: | article in journal/newspaper |
| وصف الملف: | application/pdf |
| اللغة: | English |
| ردمك: | 978-0-00-368803-0 0-00-368803-8 |
| تدمد: | 1748-9326 |
| Relation: | Ministerio de EconomÃa y Competitividad CGL2013-48074-P; European Commission 610028; Journal of Geophysical Science; Vol. 11, Núm. 1 (January 2016); https://ddd.uab.cat/record/195913; urn:10.1088/1748-9326/11/1/014003; urn:oai:ddd.uab.cat:195913; urn:scopus_id:84956609011; urn:wos_id:000368803800006 |
| الاتاحة: | https://ddd.uab.cat/record/195913 |
| Rights: | open access ; Aquest document està subjecte a una llicència d'ús Creative Commons. Es permet la reproducció total o parcial, la distribució, la comunicació pública de l'obra i la creació d'obres derivades, fins i tot amb finalitats comercials, sempre i quan es reconegui l'autoria de l'obra original. ; https://creativecommons.org/licenses/by/4.0/ |
| رقم الانضمام: | edsbas.F32D6260 |
| قاعدة البيانات: | BASE |
Full Text Finder | ردمك: | 9780003688030 0003688038 |
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| تدمد: | 17489326 |