Dynamic variability of the heading-flowering stages of single rice in China based on field observations and NDVI estimations
文献类型：SCI/SSCI论文
| 作者 | Zhang Z.; Song, X.; Chen, Y.; Wang, P.; Wei, X.; Tao, F. L. |
| 发表日期 | 2015 |
| 关键词 | Spatiotemporal Heading-flowering Phenology NDVI Single rice satellite sensor data climate-change time-series irrigated rice phenological seasons spring temperature soybean phenology northeast china growth duration day length |
| 英文摘要 | Although many studies have indicated the consistent impact of warming on the natural ecosystem (e.g., an early flowering and prolonged growing period), our knowledge of the impacts on agricultural systems is still poorly understood. In this study, spatiotemporal variability of the heading-flowering stages of single rice was detected and compared at three different scales using field-based methods (FBMs) and satellite-based methods (SBMs). The heading-flowering stages from 2000 to 2009 with a spatial resolution of 1 km were extracted from the SPOT/VGT NDVI time series data using the Savizky-Golay filtering method in the areas in China dominated by single rice of Northeast China (NE), the middle-lower Yangtze River Valley (YZ), the Sichuan Basin (SC), and the Yunnan-Guizhou Plateau (YG). We found that approximately 52.6 and 76.3% of the estimated heading-flowering stages by a SBM were within +/- 5 and +/- 10 days estimation error (a root mean square error (RMSE) of 8.76 days) when compared with those determined by a FBM. Both the FBM data and the SBM data had indicated a similar spatial pattern, with the earliest annual average heading-flowering stages in SC, followed by YG, NE, and YZ, which were inconsistent with the patterns reported in natural ecosystems. Moreover, diverse temporal trends were also detected in the four regions due to different climate conditions and agronomic factors such as cultivar shifts. Nevertheless, there were no significant differences (p>0.05) between the FBM and the SBM in both the regional average value of the phenological stages and the trends, implying the consistency and rationality of the SBM at three scales. |
| 出处 | International Journal of Biometeorology |
| 卷 | 59 |
| 期 | 5 |
| 页 | 643-655 |
| 收录类别 | SCI |
| 语种 | 英语 |
| ISSN号 | 0020-7128 |
| 源URL | [http://ir.igsnrr.ac.cn/handle/311030/39039]  |
| 专题 | 地理科学与资源研究所_历年回溯文献 |
| 推荐引用方式 GB/T 7714 | Zhang Z.,Song, X.,Chen, Y.,et al. Dynamic variability of the heading-flowering stages of single rice in China based on field observations and NDVI estimations. 2015. |
入库方式： OAI收割
来源：地理科学与资源研究所
浏览0
下载0
收藏0
其他版本
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。