Migration and transformation of Cd in four crop rotation systems and their potential for remediation of Cd-contaminated farmland in southern China
文献类型：期刊论文
| 作者 | Zhang, Qingying; Wang, Liang; Xiao, Yuxuan; Liu, Qiqing; Zhao, Fenghua; Li, Xiaofang; Tang, Liping; Liao, Xiaoyong |
| 刊名 | SCIENCE OF THE TOTAL ENVIRONMENT
 |
| 出版日期 | 2023-08-10 |
| 卷号 | 885页码:163893 |
| ISSN号 | 1879-1026 |
| 关键词 | Cd-contaminated paddy Crop rotation Low-Cd rice Safe production Remediation Nitrate-nitrogen |
| DOI | 10.1016/j.scitotenv.2023.163893 |
| 产权排序 | 1 |
| 文献子类 | Article |
| 英文摘要 | A crop rotation system combining agricultural production with phytoremediation is an economical and sustainable method of remediation of cadmium (Cd)-contaminated farmland. This study focuses on migration and transformation of Cd in rotation systems and the influencing factors. In a two-year field experiment, four rotation systems were eval-uated: traditional rice and oilseed rape (TRO), low-Cd rice and oilseed rape (LRO), maize and oilseed rape (MO), and soybean and oilseed rape (SO). Oilseed rape is a remediation plant in rotation systems. Compared to 2020, the grain Cd concentrations of traditional rice, low-Cd rice, and maize in 2021 decreased by 73.8%, 65.7%, and 24.0% (below the safety limits), respectively. However, soybean increased by 71.4%. The LRO system featured the highest oil content of rapeseed (about 50%) and economic output/input ratio (1.34). Removal efficiency of total Cd in soil was 10.03% (TRO) > 8.3% (LRO) > 5.32% (SO) > 3.21% (MO). Crop uptake of Cd was influenced by bioavailability of soil Cd, and soil environmental factors regulated the bioavailable Cd. Redundancy analysis (RDA) indicated that soil nitrate-nitrogen (NO3--N) had a dominant impact on bioavailable Cd in soil, with variance contributions of 56.7% for paddy-upland (TRO and LRO) and 53.5% for dryland (MO and SO) rotation systems. The difference reflected that ammonium N (NH4+-N) was a secondary factor in paddy-upland rotations, while it was the available phosphorus (P) in dryland rotations, with variance contributions of 10.4% and 24.3%, respectively. The comprehensive evaluation of crop safety, production, economic benefits, and remediation efficiency revealed that the LRO system was efficient and more acceptable to local farmers, providing a new direction for the utilization and remediation of Cd-contaminated farmland. |
| 学科主题 | Environmental Sciences & Ecology |
| WOS关键词 | HEAVY-METALS ; CHEMICAL FORMS ; SUBCELLULAR-DISTRIBUTION ; SEDUM-ALFREDII ; PADDY SOIL ; CADMIUM ; L. ; PHOSPHORUS ; NITROGEN ; PHYTOREMEDIATION |
| WOS研究方向 | Environmental Sciences & Ecology |
| 出版者 | ELSEVIER |
| 源URL | [http://ir.igsnrr.ac.cn/handle/311030/193820]  |
| 专题 | 陆地表层格局与模拟院重点实验室_外文论文 |
| 作者单位 | 1.Chinese Academy of Sciences 2.Oil Crops Research Institute, CAAS 3.Chinese Academy of Agricultural Sciences 4.University of Chinese Academy of Sciences, CAS 5.Institute of Geographic Sciences & Natural Resources Research, CAS |
| 推荐引用方式 GB/T 7714 | Zhang, Qingying,Wang, Liang,Xiao, Yuxuan,et al. Migration and transformation of Cd in four crop rotation systems and their potential for remediation of Cd-contaminated farmland in southern China[J]. SCIENCE OF THE TOTAL ENVIRONMENT,2023,885:163893. |
| APA | Zhang, Qingying.,Wang, Liang.,Xiao, Yuxuan.,Liu, Qiqing.,Zhao, Fenghua.,...&Liao, Xiaoyong.(2023).Migration and transformation of Cd in four crop rotation systems and their potential for remediation of Cd-contaminated farmland in southern China.SCIENCE OF THE TOTAL ENVIRONMENT,885,163893. |
| MLA | Zhang, Qingying,et al."Migration and transformation of Cd in four crop rotation systems and their potential for remediation of Cd-contaminated farmland in southern China".SCIENCE OF THE TOTAL ENVIRONMENT 885(2023):163893. |
入库方式： OAI收割
来源：地理科学与资源研究所
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