Nitrogen nutrient supply and greenhouse gas mitigation potentials from cover crops across Chinese croplands
文献类型：期刊论文
| 作者 | Wang, Yicheng2,3; Tao, Fulu1,2,3 |
| 刊名 | JOURNAL OF CLEANER PRODUCTION
 |
| 出版日期 | 2023-11-01 |
| 卷号 | 425页码:10 |
| 关键词 | Climate smart agriculture Cropping system Crop mapping Sustainable intensification Organic nitrogen Nature-based climate solutions |
| ISSN号 | 0959-6526 |
| DOI | 10.1016/j.jclepro.2023.138881 |
| 通讯作者 | Tao, Fulu(taofl@igsnrr.ac.cn) |
| 英文摘要 | Cover crops can benefit agricultural systems greatly by improving soil fertility, increasing soil organic carbon (SOC) contents, and promoting grain yield. Recently cover crops have been recommended as a practice to ameliorate croplands and develop nature-based climate solutions. However, the information as to where is potentially suitable for developing cover crops is lacking. Here, we try to map the potential regions suitable for cover crops and to estimate nitrogen nutrient supply and greenhouse gas (GHG) mitigation potentials with the hypothesis that all the suitable fallow lands are used for cover crops. First, we generated a smoothed normalized difference vegetation index (NDVI) series by Savitzky-Golay method from 2019 to 2021. Then, we produced the phenology dates and tracked the regular crop fallow periods in the three years. Next, we extracted the potential regions for cover crops based on the effective accumulated temperature requirements and drainage limit. Finally, we estimated nitrogen supply and GHG mitigation potentials using the previous measurements. Results show that nearly 13.3% (similar to 26.7 Mha) of current croplands can be planted with cover crops, providing 1.21 +/- 0.26 Tg N yr(-1) of nitrogen fertilizer. The potential cover crops can mitigate 58.85 +/- 9.95 Tg CO2-eq yr(-1) of GHG emissions. SOC sequestration is the dominant process in the GHG mitigation with a rate of 48.15 +/- 5.34 Tg CO2-eq yr(-1), equal to 30.1% +/- 3.4% of the current annual total SOC sequestration in Chinese croplands. The study demonstrates an advanced framework in mapping the potential croplands available for cover crops and providing evidence-based planning of extending cover crops across China. The framework can be widely applied to other regions, contributing to building climate smart agriculture and developing nature-based climate solutions. |
| WOS关键词 | SOIL ORGANIC-CARBON ; FORAGE LEGUMES ; SEQUESTRATION ; TIME ; AREA ; NDVI |
| 资助项目 | National Natural Science Founda-tion of China[42061144003] |
| WOS研究方向 | Science & Technology - Other Topics ; Engineering ; Environmental Sciences & Ecology |
| 语种 | 英语 |
| WOS记录号 | WOS:001088705200001 |
| 出版者 | ELSEVIER SCI LTD |
| 资助机构 | National Natural Science Founda-tion of China |
| 源URL | [http://ir.igsnrr.ac.cn/handle/311030/199180]  |
| 专题 | 中国科学院地理科学与资源研究所 |
| 通讯作者 | Tao, Fulu |
| 作者单位 | 1.Nat Resources Inst Finland Luke, Helsinki 00790, Finland 2.Univ Chinese Acad Sci, Coll Resources & Environm, Beijing 100049, Peoples R China 3.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 | Wang, Yicheng,Tao, Fulu. Nitrogen nutrient supply and greenhouse gas mitigation potentials from cover crops across Chinese croplands[J]. JOURNAL OF CLEANER PRODUCTION,2023,425:10. |
| APA | Wang, Yicheng,&Tao, Fulu.(2023).Nitrogen nutrient supply and greenhouse gas mitigation potentials from cover crops across Chinese croplands.JOURNAL OF CLEANER PRODUCTION,425,10. |
| MLA | Wang, Yicheng,et al."Nitrogen nutrient supply and greenhouse gas mitigation potentials from cover crops across Chinese croplands".JOURNAL OF CLEANER PRODUCTION 425(2023):10. |
入库方式： OAI收割
来源：地理科学与资源研究所
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