农作物水足迹及其驱动机制显示出区域差异
Huan Fang1, Nan Wu1, Jan Adamowski2
1College of Agricultural Science and Engineering, Hohai University, Nanjing 210098, China.
The Science of the total environment
|October 6, 2023
概括
这项研究量化了中国的作物水足迹,揭示了水果和谷物占据了水资源使用的优势. 灌和肥料使用是关键的驱动因素,区域差异影响水资源管理.
科学领域:
- 农业科学 农业科学
- 环境科学 环境科学
- 水资源管理 水资源管理
背景情况:
- 农作物水足迹评估对于可持续的水资源管理至关重要.
- 缺乏对不同中国地区作物水足迹驱动因素的比较研究.
- 了解这些驱动因素对于区域生态可持续性至关重要.
研究的目的:
- 从1996年到2020年,量化中国七个主要地区的作物水足迹.
- 分析这些不同地区作物水足迹的驱动机制.
- 为有效和可持续的农业用水资源利用提供参考.
主要方法:
- 对七个中国地区的作物水足迹 (蓝色,绿色和灰色水) 的量化.
- 运用路径分析来确定作物水足迹的驱动机制.
- 对作物水足迹的时间趋势和区域差异的分析.
主要成果:
- 农业年平均水足迹为1448.2Gm3,其中绿色水是最大的组成部分 (66.6%).
- 水果和谷物占总水足迹的80%,中国东部地区的水足迹最高.
- 灌面积比例和化学肥料消费是重要的驱动因素,经济因素影响了西北地区.
结论:
- 农作物水足迹在中国各地区有很大差异,需要量身定制的管理策略.
- 灌实践和施肥应用是作物水足迹的主要决定因素.
- 结果为优化农业水资源管理和促进可持续性提供了宝贵的见解.
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