Catchment agriculture and local environment affecting the soil denitrification potential and nitrous oxide production of riparian zones in the Han River Basin, China
文献类型：期刊论文
| 作者 | Liu, Wenzhi1; Xiong, Ziqian1,2; Liu, Hui3,4; Zhang, Quanfa1,2; Liu, Guihua1 |
| 刊名 | AGRICULTURE ECOSYSTEMS & ENVIRONMENT
 |
| 出版日期 | 2016-01-15 |
| 卷号 | 216页码:147-154 |
| 关键词 | Agricultural landscape Greenhouse gas Nitrogen cycles Potential denitrification Yangtze River Basin |
| ISSN号 | 0167-8809 |
| DOI | 10.1016/j.agee.2015.10.002 |
| 英文摘要 | Riparian zones play an important role in reducing nitrogen (N) loading to rivers and streams primarily through soil denitrification which reduces nitrate (NO3-) to nitrous oxide (N2O) and dinitrogen (N-2) gases. Although the relationships between local environments and soil denitrification are well understood, relatively little is known about the indirect effects of landscape factors (e.g., catchment agriculture) on the soil denitrification of riparian zones. In this study, we used the acetylene block technique to measure the denitrification potential and net N2O production of soils collected from 62 riparian sites in 15 subtropical rivers of varying catchment land uses. The results indicated that, among the local factors studied, the soil moisture, organic matter and N-3(-) concentrations were positively associated with both the denitrification potential and N2O production rate. Agricultural riparian zones had a denitrification potential (2.81 +/- 1.01 ng N g(-1) h(-1)) significantly higher than forested riparian zones (0.66 +/- 0.24 ngN g(-1) h(-1)). Additionally, the riparian denitrification potential increased with the percentage of agriculture in the catchments (R = 0.53, P <0.05). Structural equation modeling revealed that the indirect effects of catchment agriculture on the riparian denitrification potential and N2O production rate were mediated primarily through soil N-3(-). Our findings suggest that, compared to forested riparian zones, agricultural riparian zones have greater potential to remove N from polluted runoff. The conversion of original vegetation to agricultural lands in catchments may have a profound impact on the soil N cycles and N-3(-) removal capacity of riparian zones. (C) 2015 Elsevier B.V. All rights reserved. |
| 资助项目 | National Science Foundation of China[31270583] ; Chinese Academy of Sciences[Y455435L04] |
| WOS研究方向 | Agriculture ; Environmental Sciences & Ecology |
| 语种 | 英语 |
| WOS记录号 | WOS:000366074400016 |
| 出版者 | ELSEVIER SCIENCE BV |
| 源URL | [http://202.127.146.157/handle/2RYDP1HH/132]  |
| 专题 | 中国科学院武汉植物园 |
| 通讯作者 | Liu, Guihua |
| 作者单位 | 1.Chinese Acad Sci, Wuhan Bot Garden, Key Lab Aquat Bot & Watershed Ecol, Wuhan 430074, Peoples R China 2.Univ Chinese Acad Sci, Beijing 100049, Peoples R China 3.Minist Water Resources, Inst Hydroecol, Wuhan 430079, Peoples R China 4.Chinese Acad Sci, Wuhan 430079, Peoples R China |
| 推荐引用方式 GB/T 7714 | Liu, Wenzhi,Xiong, Ziqian,Liu, Hui,et al. Catchment agriculture and local environment affecting the soil denitrification potential and nitrous oxide production of riparian zones in the Han River Basin, China[J]. AGRICULTURE ECOSYSTEMS & ENVIRONMENT,2016,216:147-154. |
| APA | Liu, Wenzhi,Xiong, Ziqian,Liu, Hui,Zhang, Quanfa,&Liu, Guihua.(2016).Catchment agriculture and local environment affecting the soil denitrification potential and nitrous oxide production of riparian zones in the Han River Basin, China.AGRICULTURE ECOSYSTEMS & ENVIRONMENT,216,147-154. |
| MLA | Liu, Wenzhi,et al."Catchment agriculture and local environment affecting the soil denitrification potential and nitrous oxide production of riparian zones in the Han River Basin, China".AGRICULTURE ECOSYSTEMS & ENVIRONMENT 216(2016):147-154. |
入库方式： OAI收割
来源：武汉植物园
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