Assessing the effects of short-term Spartina alterniflora invasion on labile and recalcitrant C and N pools by means of soil fractionation and stable C and N isotopes
文献类型：期刊论文
| 作者 | Zhang, Quanfa2; Li, Bo3; Chen, Jiakuan3; Cheng, Xiaoli2,3,4; Chen, Jiquan1,3; Luo, Yiqi3,4; Henderson, Rachel1; An, Shuqing5 |
| 刊名 | GEODERMA
 |
| 出版日期 | 2008-06-15 |
| 卷号 | 145期号:3-4页码:177-184 |
| 关键词 | C(3) and C(4) plant invasion soil fractionation soil organic matter stable C and N isotopes Yangtze River estuary |
| ISSN号 | 0016-7061 |
| DOI | 10.1016/j.geoderma.2008.02.013 |
| 英文摘要 | An exotic grass Spartina alterniflora was intentionally introduced to Jiuduansha wetlands in Yangtze River estuary in 1997, and since then it had rapidly replaced native plant Scirpus mariqueter that used to dominate the estuarine salt marshes. We investigated consequences of S. alterniflora invasion to soil labile and recalcitrant C and N compared to the native S. mariqueter using soil fractionation and stable C and N isotopes. Results showed that S. alterniflora increased soil labile carbon (LC), recalcitrant carbon (RC), and soil recalcitrant nitrogen (RN) contents significantly (P < 0.05) in the upper soil layers (0-60 cm) compared to the S. mariqueter soil. Soil labile nitrogen (LN) in the S. alterniflora soil, however, remained lower than that in the S. mariqueter soil (P < 0.01), except for the surface soil layer (0-20 cm). The LC accounted for, on average, 36-38% of soil organic matter (SOM) in both communities, while labile N accounted for 32% of SOM in S. alterniflora soil and 48% in S. mariqueter soil. The delta(13)C values in S. alterniflora soil showed that S. alterniflora contributed on average 8.6% and 3.3% to the LC and RC pools, respectively, within the 0-100-cm soil layer. The greatest labile C contribution derived from S. alterniflora was found at the 40-cm soil whereas the proportion of recalcitrant C originating from S. alterniflora showed a decreasing trend with soil depth. These changes appeared to be associated with vertical distributions of roots and rhizodeposition. We also found that the delta(15)N values of SOM were more enriched in S. alterniflora soil compared to S. mariqueter soil, suggesting that greater SOM input by S. alterniflora residues would stimulate microbial activity rates that could lead to increased N turnover rates in S. alterniflora soil. (c) 2008 Elsevier B.V. All rights reserved. |
| WOS研究方向 | Agriculture |
| 语种 | 英语 |
| WOS记录号 | WOS:000257849800001 |
| 出版者 | ELSEVIER SCIENCE BV |
| 源URL | [http://202.127.146.157/handle/2RYDP1HH/1095]  |
| 专题 | 中国科学院武汉植物园 |
| 通讯作者 | Luo, Yiqi |
| 作者单位 | 1.Univ Toledo, Dept Environm Sci, Toledo, OH 43606 USA 2.CAS, Wuhan Bot Garden, Wuhan 430074, Peoples R China 3.Fudan Univ, Inst Biodivers Sci, Minist Educ, Key Lab Biodivers Sci & Ecol Engn,Coastal Ecosyst, Shanghai 200433, Peoples R China 4.Univ Oklahoma, Dept Bot & Microbiol, Norman, OK 73019 USA 5.Nanjing Univ, Sch Life Sci, Nanjing 210093, Peoples R China |
| 推荐引用方式 GB/T 7714 | Zhang, Quanfa,Li, Bo,Chen, Jiakuan,et al. Assessing the effects of short-term Spartina alterniflora invasion on labile and recalcitrant C and N pools by means of soil fractionation and stable C and N isotopes[J]. GEODERMA,2008,145(3-4):177-184. |
| APA | Zhang, Quanfa.,Li, Bo.,Chen, Jiakuan.,Cheng, Xiaoli.,Chen, Jiquan.,...&An, Shuqing.(2008).Assessing the effects of short-term Spartina alterniflora invasion on labile and recalcitrant C and N pools by means of soil fractionation and stable C and N isotopes.GEODERMA,145(3-4),177-184. |
| MLA | Zhang, Quanfa,et al."Assessing the effects of short-term Spartina alterniflora invasion on labile and recalcitrant C and N pools by means of soil fractionation and stable C and N isotopes".GEODERMA 145.3-4(2008):177-184. |
入库方式： OAI收割
来源：武汉植物园
浏览0
下载0
收藏0
其他版本
除非特别说明，本系统中所有内容都受版权保护，并保留所有权利。