期刊
CLEAN-SOIL AIR WATER
卷 43, 期 6, 页码 872-880出版社
WILEY
DOI: 10.1002/clen.201300846
关键词
Ecosystems; Isotopes; Smooth cordgrass; Soil organic matter
类别
资金
- National Basic Research Program of China [2013CB430405]
- Special Research Program for Public-Welfare Forestry [200804005]
- Natural Science Foundation of China [31200304]
Terrestrial ecosystems carbon (C) and nitrogen (N) cycles, affected by plant invasion, are not fully understood. In this study, the impact of 10 years Spartina alterniflora invasion on soil organic matter (SOM), labile, and recalcitrant pools was examined comparing with bare flat and native Suaeda salsa and Phragmites australis communities in tidal salt marshes of the Eastern Chinese coast. Short-term S. alterniflora invasion significantly raised C and N concentrations in SOM, labile and recalcitrant pools compared to bare flat, S. salsa and P. australis soils. Spartina alterniflora soil had higher recalcitrant index for C relative to bare flat. The proportion of S. alterniflora-derived C and the decomposition rate of old C in the labile pool were significantly higher than those in the recalcitrant pool. However, the S. alterniflora-derived C stock of the recalcitrant pool was much greater than that of the labile pool. The SOM and recalcitrant pools in S. alterniflora soil had significantly higher delta N-15 levels compared with bare flat, indicating an increased N loss following S. alterniflora invasion. The results suggested that short- term S. alterniflora invasion significantly enlarged soil organic C and N pools via altering SOM input and decomposition.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据