Stable isotope evidences for identifying crop water uptake in a typical winter wheat-summer maize rotation field in the North China Plain
文献类型：期刊论文
| 作者 | Zhao, X; Li, FD; Ai, ZP; Li, J; Gu, CK |
| 刊名 | SCIENCE OF THE TOTAL ENVIRONMENT
 |
| 出版日期 | 2018 |
| 卷号 | 618页码:121-131 |
| 关键词 | Crop water use delta O-18 and delta H-2 Dry root weight density Soil volumetric water content Irrigation management |
| ISSN号 | 0048-9697 |
| 文献子类 | Journal |
| 英文摘要 | Better managing agricultural water resources, which are increasingly stressed by climate change and anthropogenic activities, is difficult, particularly because of variations in water uptake patterns associated with crop type and growth stage. Thus, the stable isotopes delta O-18 and delta H-2 were employed to investigate the water uptake patterns of a summer maize (Zea mays L.) and winter wheat (Triticum aestivum L.) rotation system in the North China Plain. Based on the soil water content, soil layers were divided into four groups (0-20 cm, 20-40 cm, 40-120 cm, and 120-200 cm) using a hierarchical cluster analysis. The main soil layer of water uptake for summermaize was from 0-20 cm at the trefoil (77.8%) and jointing (48.6%) stages to 20-40 cm at the booting (33.6%) and heading (32.6%) stages, became 40-120 cm at the silking (32.0%) and milking (36.7%) stages, and then returned to 0-20 cm at the mature (35.0%) and harvest (52.4%) stages. Winter wheat most absorbed water from the 0-20 cm soil water at the wintering (86.6%), seedling (83.7%), jointing (45.2%), booting (51.4%), heading (28.8%), and mature (67.8%) stages, but it was 20-40 cm at the flowering (34.8%) and milking (25.2%) stages. The dry root weight density was positively correlated with the contributions of the water uptake for winter wheat. However, no similar correlation was found in summermaize. Regression analysis indicated that the soil volumetric water content (SVWC) was negatively correlated with the contribution of the water uptake (CWU) for summer maize (CWU=-0.91xSVWC+57.75) and winter wheat (CWU = -2.03xSVWC+92.73). These different responses to water uptake contributions suggested that a traditional irrigation event should be postponed from the booting to flowering stage of winter wheat. This study provides insights into crop water uptake and agricultural water management. (c) 2017 Elsevier B.V. All rights reserved. |
| 学科主题 | Environmental Sciences & Ecology |
| WOS关键词 | ROOT DISTRIBUTION ; SOIL-WATER ; SEASONAL-VARIATIONS ; USE STRATEGIES ; USE EFFICIENCY ; IRRIGATION ; GROUNDWATER ; TREES ; EVAPOTRANSPIRATION ; PATTERNS |
| 语种 | 英语 |
| WOS记录号 | WOS:000424130500013 |
| 出版者 | ELSEVIER SCIENCE BV |
| 源URL | [http://ir.igsnrr.ac.cn/handle/311030/43900]  |
| 专题 | 生态系统网络观测与模拟院重点实验室_生态网络实验室 |
| 作者单位 | [Zhao, Xin; Li, Fadong; Li, Jing; Gu, Congke] Chinese Acad Sci, Inst Geog Sci & Nat Resources Res, Key Lab Ecosyst Network Observat & Modeling, Beijing 100101, Peoples R China; [Zhao, Xin; Li, Fadong; Gu, Congke] Univ Chinese Acad Sci, Coll Resources & Environm, Beijing 100190, Peoples R China; [Zhao, Xin] Natl Inst Environm Studies, Ctr Global Environm Res, Tsukuba, Ibaraki 3058506, Japan; [Ai, Zhipin] Natl Inst Environm Studies, Ctr Reg Environm Res, Tsukuba, Ibaraki 3058506, Japan |
| 推荐引用方式 GB/T 7714 | Zhao, X,Li, FD,Ai, ZP,et al. Stable isotope evidences for identifying crop water uptake in a typical winter wheat-summer maize rotation field in the North China Plain[J]. SCIENCE OF THE TOTAL ENVIRONMENT,2018,618:121-131. |
| APA | Zhao, X,Li, FD,Ai, ZP,Li, J,&Gu, CK.(2018).Stable isotope evidences for identifying crop water uptake in a typical winter wheat-summer maize rotation field in the North China Plain.SCIENCE OF THE TOTAL ENVIRONMENT,618,121-131. |
| MLA | Zhao, X,et al."Stable isotope evidences for identifying crop water uptake in a typical winter wheat-summer maize rotation field in the North China Plain".SCIENCE OF THE TOTAL ENVIRONMENT 618(2018):121-131. |
入库方式： OAI收割
来源：地理科学与资源研究所
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