Halving Environmental Impacts of Diverse Crop Production in Fujian, China through Optimized Nitrogen Management
文献类型：期刊论文
| 作者 | Li, Jun3,4; Wang, Minglei2; Shi, Wenjiao2; Shi, Xiaoli3,4 |
| 刊名 | AGRICULTURE-BASEL
 |
| 出版日期 | 2024-09-01 |
| 卷号 | 14期号:9页码:1639 |
| 关键词 | N application NUE spatial heterogeneity GHG emissions improvement potentials |
| DOI | 10.3390/agriculture14091639 |
| 产权排序 | 1 |
| 文献子类 | Article |
| 英文摘要 | Nitrogen (N) fertilizer is essential for agricultural production as it is the main nutrient driving crop growth. However, in China, only one-third of applied N fertilizer is effectively absorbed by crops, while the rest leads to significant environmental impacts. In this study, we introduced a nitrogen threshold boundary (NTB) approach to establish different thresholds for N use efficiency (NUE) and N surplus without affecting crop yield. We also developed an integrated assessment framework to systematically evaluate the potential for improving N utilization and reducing environmental impacts in the production of grain crops (rice, wheat, maize, and soybeans) and cash crops (tea, fruits, and vegetables) at the county level in Fujian Province. Three N management strategies were evaluated: a scenario with reduced N surplus (S1), a scenario with increased NUE (S2), and a combined scenario that simultaneously reduces N surplus and increases NUE (S3). The predictions indicate that, under the aforementioned scenarios, there will be a decrease of 66%, 58%, and 71% in N application without affecting crop yields, respectively. Correspondingly, N surplus will decrease by 65%, 56%, and 67%, while greenhouse gas (GHG) emissions will decrease by 54%, 48%, and 57%. In addition, NUE will increase by 23%, 17% and 25%, respectively. It is notable that scenario S3 demonstrated the greatest potential for improvement. For cash crops, N application will decrease by 65-78%, NUE will increase by 13-21%, N surplus will decrease by 63-74%, and GHG emissions will reduce by 66-78%. In contrast, for grain crops, N application will decrease by 27-38%, NUE will increase by 9-13%, N surplus will decrease by 26-37%, and GHG emissions will reduce by 24-28%. Overall, the potential for improvement is greater for cash crops compared to grain crops. The application of the assessment framework in this study demonstrates its effectiveness as a valuable tool for promoting green and sustainable development in conventional agricultural regions. |
| WOS关键词 | GREENHOUSE-GAS EMISSIONS ; USE EFFICIENCY ; FERTILIZER ; BALANCE ; WHEAT ; YIELD ; AIR |
| WOS研究方向 | Agriculture |
| WOS记录号 | WOS:001323014900001 |
| 源URL | [http://ir.igsnrr.ac.cn/handle/311030/207994]  |
| 专题 | 陆地表层格局与模拟院重点实验室_外文论文 |
| 通讯作者 | Shi, Wenjiao |
| 作者单位 | 1.Univ Chinese Acad Sci, Coll Resources & Environm, Beijing 100049, Peoples R China 2.Hebei Normal Univ, Hebei Technol Innovat Ctr Remote Sensing Identific, Geocomputat & Planning Ctr, Shijiazhuang 050024, Peoples R China 3.Hebei Normal Univ, Sch Geog Sci, Hebei Key Lab Environm Change & Ecol Construct, Shijiazhuang 050024, Peoples R China 4.Chinese Acad Sci, Inst Geog Sci & Nat Resources Res, Key Lab Land Surface Pattern & Simulat, Beijing 100101, Peoples R China |
| 推荐引用方式 GB/T 7714 | Li, Jun,Wang, Minglei,Shi, Wenjiao,et al. Halving Environmental Impacts of Diverse Crop Production in Fujian, China through Optimized Nitrogen Management[J]. AGRICULTURE-BASEL,2024,14(9):1639. |
| APA | Li, Jun,Wang, Minglei,Shi, Wenjiao,&Shi, Xiaoli.(2024).Halving Environmental Impacts of Diverse Crop Production in Fujian, China through Optimized Nitrogen Management.AGRICULTURE-BASEL,14(9),1639. |
| MLA | Li, Jun,et al."Halving Environmental Impacts of Diverse Crop Production in Fujian, China through Optimized Nitrogen Management".AGRICULTURE-BASEL 14.9(2024):1639. |
入库方式： OAI收割
来源：地理科学与资源研究所
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