Estimation of water consumption and productivity for rice through integrating remote sensing and census data in the Songnen Plain, China
| 第一作者： |
杜嘉 |
| 英文第一作者： |
Du, J. |
| 联系作者： |
杜嘉 |
| 英文联系作者： |
Du, J. |
| 发表年度： |
2015 |
| 卷： |
13 |
| 摘要： |
The framework of water consumption and water productivity (WP) is a useful approach for evaluating the performance of agricultural production systems and provides relevant feedback for management. The purpose of this research is to examine rice water consumption and WP in 56 counties of the Songnen Plain through integrating remotely sensed images, census data, and climatic records. The mean value and standard deviation (SD) of actual seasonal evapotranspiration (ETs) were 678.4 and 86.6 mm for paddy rice in the growing period (153 days) in the Songnen Plain, exhibiting a significant spatial heterogeneity. The WP ranged from 0.85 to 1.71 kg/m(3) with the WP mean value and SD being 1.26 and 0.23 kg/m(3). A comparative analysis of actual evapotranspiration (ETa), rice yield, WP, water stress, and rainfall maps indicates greater space for improvement of water use efficiency in the Songnen Plain, which will facilitates irrigation water resource management. |
| 刊物名称： |
Paddy and Water Environment |
| 参与作者： |
宋开山，王宗明 |
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