Climate Change Data Portal
| DOI | 10.1002/saj2.20703 |
| Carbon footprint and carbon balance of three long-term dryland cropping sequences | |
| 发表日期 | 2024 |
| ISSN | 0361-5995 |
| EISSN | 1435-0661 |
| 英文摘要 | Carbon footprints from plants, soil, and the environment are needed to evaluate C balance of an agroecosystem, which indicates if a system is a C source or sink for mitigating climate change. There is scarce information about C footprint and C balance in dryland agroecosystems. We measured C storage of above- and belowground crop biomass, CO2 fluxes, soil C sequestration rates, and C balances of three long-term (34-year-old) dryland cropping sequences from 2016 to 2018 in the US northern Great Plains. Cropping sequences were no-till continuous spring wheat (NTCW; Triticum aestivum L.), no-till spring wheat-pea (NTWP; Pisum sativum L.), and conventional till spring wheat-fallow (CTWF). Carbon storage in grain, straw, root, and rhizodeposit were 29%-61% greater for NTCW and NTWP than CTWF. The CO2 flux peaked immediately after tillage, planting, fertilization, and intense precipitation (>10 mm) for 3 months in 2016-2017. Cumulative annual CO2 flux was 8%-37% greater for NTCW than NTWP and CTWF in 2016-2017, but was not different among cropping sequences in 2017-2018. Soil C sequestration rate at 0-10 cm measured from 2012 to 2019 was in the order: NTCW (0.27 Mg C ha(-1) year(-1)) > NTWP > CTWF (-0.23 Mg C ha(-1) year(-1)). Carbon balance remained negative and was not significantly different among cropping sequences but varied by year. Carbon loss increased with increased precipitation, regardless of cropping systems. Although a C source, the legume-nonlegume rotation can reduce C loss due to greater grain C output than other cropping sequences in the semiarid region of the northern Great Plains. |
| 语种 | 英语 |
| WOS研究方向 | Agriculture |
| WOS类目 | Soil Science |
| WOS记录号 | WOS:001234765700001 |
| 来源期刊 | SOIL SCIENCE SOCIETY OF AMERICA JOURNAL
 |
| 文献类型 | 期刊论文 |
| 条目标识符 | http://gcip.llas.ac.cn/handle/2XKMVOVA/300392 |
| 作者单位 | United States Department of Agriculture (USDA) |
| 推荐引用方式 GB/T 7714 | . Carbon footprint and carbon balance of three long-term dryland cropping sequences[J],2024. |
| APA | (2024).Carbon footprint and carbon balance of three long-term dryland cropping sequences.SOIL SCIENCE SOCIETY OF AMERICA JOURNAL. |
| MLA | "Carbon footprint and carbon balance of three long-term dryland cropping sequences".SOIL SCIENCE SOCIETY OF AMERICA JOURNAL (2024). |
| 条目包含的文件 | 条目无相关文件。 | |||||
| 个性服务 |
| 推荐该条目 |
| 保存到收藏夹 |
| 导出为Endnote文件 |
| 谷歌学术 |
| 谷歌学术中相似的文章 |
| 百度学术 |
| 百度学术中相似的文章 |
| 必应学术 |
| 必应学术中相似的文章 |
| 相关权益政策 |
| 暂无数据 |
| 收藏/分享 |
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。
