How Tillage and Fertilization Influence Soil N2O Emissions after Forestland Conversion to Cropland
文献类型：期刊论文
| 作者 | Ren, Xiao; (1,2)Zhu, Bo(1); Bah, Hamidou1,2; Raza, Syed Turab1,2 |
| 刊名 | SUSTAINABILITY
 |
| 出版日期 | 2020 |
| 卷号 | 12期号:19页码:7947 |
| 关键词 | land use change tillage fertilization N2O fluxes subtropical region |
| DOI | 10.3390/su12197947 |
| 产权排序 | 1 |
| 通讯作者 | Zhu, Bo(bzhu@imde.ac.cn) |
| 文献子类 | Article |
| 英文摘要 | Soil nitrous oxide (N2O) emissions are influenced by land use adjustment and management practices. To meet the increasing socioeconomic development and sustainable demands for food supply, forestland conversion to cropland occurs around the world. However, the effects of forestland conversion to cropland as well as of tillage and fertilization practices on soil N2O emissions are still not well understood, especially in subtropical regions. Therefore, field experiments were carried out to continuously monitor soil N2O emissions after the conversion of forestland to cropland in a subtropical region in Southwest China. One forestland site and four cropland sites were selected: forestland (CK), short-term croplands (tillage with and without fertilization, NC-TF and NC-T), and long-term croplands (tillage with and without fertilization, LC-TF and LC-T). The annual cumulative N2O flux was 0.21 kg N ha(-1) yr(-1) in forestland. After forestland conversion to cropland, the annual cumulative N2O flux significantly increased by 76-491%. In the short-term and long-term croplands, tillage with fertilization induced cumulative soil N2O emissions that were 94% and 235% higher than those from tillage without fertilization. Fertilization contributed 63% and 84% to increased N2O emissions in the short-term and long-term croplands, respectively. A stepwise regression analysis showed that soil N2O emissions from croplands were mainly influenced by soil NO3- and NH4+ availability and WFPS (water-filled pore space). Fertilization led to higher soil NH4+ and NO3- concentrations, which thus resulted in larger N2O fluxes. Thus, to reduce soil N2O emissions and promote the sustainable development of the eco-environment, we recommend limiting the conversion of forestland to cropland, and meanwhile intensifying the shift from grain to green or applying advanced agricultural management practices as much as possible. |
| 电子版国际标准刊号 | 2071-1050 |
| WOS关键词 | NITROUS-OXIDE EMISSIONS ; LAND-USE CHANGE ; WHEAT-MAIZE ROTATION ; SICHUAN BASIN ; N-FERTILIZATION ; ORGANIC-MATTER ; FLUXES ; YIELD ; QUANTIFICATION ; SYSTEMS |
| 资助项目 | National Key Research and Development Program of China[2017YFD0200105] |
| WOS研究方向 | Science & Technology - Other Topics ; Environmental Sciences & Ecology |
| 语种 | 英语 |
| WOS记录号 | WOS:000586707400001 |
| 出版者 | MDPI |
| 资助机构 | National Key Research and Development Program of China |
| 源URL | [http://ir.imde.ac.cn/handle/131551/50743]  |
| 专题 | 成都山地灾害与环境研究所_山地表生过程与生态调控重点实验室 |
| 作者单位 | 1.University of Chinese Academy of Sciences, Beijing 100049, China 2.Key Laboratory of Mountain Surface Processes and Ecological Regulation, Institute of Mountain Hazards and Environment, Chinese Academy of Sciences, Chengdu 610041, China; |
| 推荐引用方式 GB/T 7714 | Ren, Xiao,Bah, Hamidou,et al. How Tillage and Fertilization Influence Soil N2O Emissions after Forestland Conversion to Cropland[J]. SUSTAINABILITY,2020,12(19):7947. |
| APA | Ren, Xiao,,Bah, Hamidou,&Raza, Syed Turab.(2020).How Tillage and Fertilization Influence Soil N2O Emissions after Forestland Conversion to Cropland.SUSTAINABILITY,12(19),7947. |
| MLA | Ren, Xiao,et al."How Tillage and Fertilization Influence Soil N2O Emissions after Forestland Conversion to Cropland".SUSTAINABILITY 12.19(2020):7947. |
入库方式： OAI收割
来源：成都山地灾害与环境研究所
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