Responses of Soil CO_2, CH_4 and N_2O Fluxes to N, P, and Acid Additions in Mixed Forest in Subtropical China
文献类型：期刊论文
| 作者 | Gao Wenlong; Yang Hao ; Li Shenggong; Kou Liang
|
| 刊名 | Journal of Resources and Ecology
 |
| 出版日期 | 2017 |
| 卷号 | 8期号:2页码:154 |
| 关键词 | 温室气体 氮沉降 酸添加 磷添加 亚热带森林 |
| ISSN号 | 1674-764X |
| 英文摘要 | Understanding how nitrogen (N) availability interacts with soil acidity and phosphorus (P) availability to affect soil-atmosphere exchanges in CO_2, CH_4 and N_2O in forest ecosystems is important for understanding the mechanisms driving ecosystem responses to enhanced N deposition. Here, we conducted an experiment with N, P and acid (H) addition in a mixed forest in subtropical China to investigate how acid and P addition affects CO_2, CH_4 and N_2O exchange under N addition. Our results showed that soil NH_4~+-N and NO_3~--N increased after N addition, but CO_2 emissions in N addition plots remained unaffected. CH_4 uptake in N–, P–, NP–, NH– and NPH–addition plots were reduced by 21.1%, 15.7%, 39.1%, 26.6%, and 28.4%, respectively. CH_4 uptake in NP–addition plots were lower compared to N–addition and P–addition plots, indicating that N and P addition had an additive effect on inhibiting CH_4 uptake. N_2O emission in N–, NP–, NH– and NPH–addition plots increased by 158.6%, 176.0%, 117.2%, and 91.8%, respectively. N_2O emissions in NPH–addition plots were lower compared to NP–addition plots while showed no difference between N–addition and NH–addition plots. This suggests that only under P rich conditions, acid addition would greatly mitigate N_2O emissions under N addition. Our results demonstrate that for N and P co-limited forest ecosystems with acidic soils, low P availability constrains the inhibition of soil CH_4 uptake by N deposition. When P availability is low, a weak soil acidation induced by N deposition may have less influence on the stimulation of N_2O emissions by N deposition. |
| 语种 | 英语 |
| 源URL | [http://ir.igsnrr.ac.cn/handle/311030/153077]  |
| 专题 | 中国科学院地理科学与资源研究所 |
| 作者单位 | 中国科学院地理科学与资源研究所 |
| 推荐引用方式 GB/T 7714 | Gao Wenlong,Yang Hao,Li Shenggong,et al. Responses of Soil CO_2, CH_4 and N_2O Fluxes to N, P, and Acid Additions in Mixed Forest in Subtropical China[J]. Journal of Resources and Ecology,2017,8(2):154. |
| APA | Gao Wenlong,Yang Hao,Li Shenggong,&Kou Liang.(2017).Responses of Soil CO_2, CH_4 and N_2O Fluxes to N, P, and Acid Additions in Mixed Forest in Subtropical China.Journal of Resources and Ecology,8(2),154. |
| MLA | Gao Wenlong,et al."Responses of Soil CO_2, CH_4 and N_2O Fluxes to N, P, and Acid Additions in Mixed Forest in Subtropical China".Journal of Resources and Ecology 8.2(2017):154. |
入库方式： OAI收割
来源：地理科学与资源研究所
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