气候变化领域集成服务门户(CCPortal): Soil Organic Nitrogen Mineralization and N2O Production Driven by Changes in Coastal Wetlands

CCPortal

DOI	10.1029/2024GB008154
	Soil Organic Nitrogen Mineralization and N2O Production Driven by Changes in Coastal Wetlands
	Yang, Ping; Yang, Hong; Hong, Yan; Lin, Xiao; Zhang, Linhai; Tong, Chuan; Lai, Derrick Y. F.; Tan, Lishan; Lin, Yongxin; Tian, Yalan; Tang, Kam W.
发表日期	2024
ISSN	0886-6236
EISSN	1944-9224
起始页码	38
结束页码	6
卷号	38 期号:6
英文摘要	Plant invasion and land reclamation have drastically transformed the landscape of coastal wetlands globally, but their resulting effects on soil organic nitrogen (SON) mineralization and nitrous oxide (N2O) production remain unclear. In this study, we examined 21 coastal wetlands across southern China that have undergone habitat transformation from native mudflats (MFs) to Spartina alterniflora marshes (SAs), and subsequently to earthen aquaculture ponds (APs). We determined the SON net mineralization rate and the presence of pertinent enzyme-encoding genes, namely chiA, pepA, and pepN. The SON net mineralization rate increased by 46.7% following the conversion of MFs to SAs but decreased by 33.1% in response to the transformation of SAs to APs. Nevertheless, there was no significant difference in the estimated mineralization efficiency of soil microbes among the habitat types. The results of structural equation modeling showed that N-mineralization gene abundance played a major role in regulating SON mineralization. Although less than 20% of the SON was estimated to be labile/semi-labile, SON mineralization was important in sustaining soil N2O production, with 5.8% of the mineralized N being fed into N2O production. Overall, our findings showed that the presence of S. alterniflora increased both SON content and mineralization rate, which would in turn promote further proliferation of this exotic plant along the coast. The conversion of S. alterniflora marshes to APs partially mitigated the positive effects of exotic plant invasion on SON turnover.
英文关键词	soil nitrogen mineralization; N-mineralization gene; plant invasion; land use change; coastal wetland; climate change
语种	英语
WOS研究方向	Environmental Sciences & Ecology ; Geology ; Meteorology & Atmospheric Sciences
WOS类目	Environmental Sciences ; Geosciences, Multidisciplinary ; Meteorology & Atmospheric Sciences
WOS记录号	WOS:001235292100001
来源期刊	GLOBAL BIOGEOCHEMICAL CYCLES
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/299176
作者单位	Fujian Normal University; Fujian Normal University; Fujian Normal University; Fujian Normal University; University of Reading; Zhejiang University of Technology; Chinese University of Hong Kong; Swansea University; National Yang Ming Chiao Tung University
推荐引用方式 GB/T 7714	Yang, Ping,Yang, Hong,Hong, Yan,et al. Soil Organic Nitrogen Mineralization and N2O Production Driven by Changes in Coastal Wetlands[J],2024,38(6).
APA	Yang, Ping.,Yang, Hong.,Hong, Yan.,Lin, Xiao.,Zhang, Linhai.,...&Tang, Kam W..(2024).Soil Organic Nitrogen Mineralization and N2O Production Driven by Changes in Coastal Wetlands.GLOBAL BIOGEOCHEMICAL CYCLES,38(6).
MLA	Yang, Ping,et al."Soil Organic Nitrogen Mineralization and N2O Production Driven by Changes in Coastal Wetlands".GLOBAL BIOGEOCHEMICAL CYCLES 38.6(2024).