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Updated: Jul 18, 2026

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基于电网规模的降低和替代肥料政策的空间效益差异:海河流域的一个案例研究

Guijun Liu¹, Huimin Wang², Gang Liu²

¹College of Management and Economics, Tianjin University, Tianjin, 300072, China; Laboratory of Computation and Analytics of Complex Management Systems (CACMS), Tianjin University, Tianjin, 300072, China; Key Laboratory of Land Surface Pattern and Simulation, Institute of Geographic Sciences and Natural Resources Research, Chinese Academy of Sciences, Beijing, 100101, China.

Journal of environmental management

|November 5, 2024

概括

平衡有机和化学肥料是绿色农业的关键. 与有机补贴一起提高肥料效率可以提高作物产量并减少排放,有助于粮食安全和可持续性.

科学领域:

农业科学农业科学
环境科学环境科学
政策分析政策分析

背景情况:

绿色农业发展需要平衡有机和化学肥料的使用,以确保粮食安全和环境可持续性.
现有的研究缺乏对肥料政策及其对各种作物的影响的电网规模经济和环境影响评估.
之前的SIMPLE-G模型仅限于单一作物,并没有模拟有机肥料替代.

研究的目的:

开发和应用SIMPLE-G-Heihe模型来模拟绿色农业政策对干旱地区多种作物的影响.
通过结合多种作物类型和有机肥料替代,解决先前模型的局限性.
为优化肥料政策提供经济和环境效益的见解.

主要方法:

开发SIMPLE-G-Heihe模型,这是SIMPLE-G模型的进步,用于模拟绿色农业政策.
模拟不同的有机肥料补贴和化学肥料技术改进的影响.
在网格尺度上分析政策对作物产量,经济产出和环境指标 (N2O排放) 的影响.

主要成果:

仅仅增加有机肥料补贴不足以显著提高产量;提高肥料利用效率至关重要.
改进的化学肥料技术 (8%) 和有机肥料补贴 (3%) 的结合将蔬菜产值提高0.27%,并将N2O排放减少1.09%.
观察到肥料使用的显著减少,特别是在上游地区的蔬菜和在海河流域的上游和中游地区的小麦和玉米.

结论:

结合技术改进和有针对性的补贴的综合政策对农业的经济和环境收益是有效的.
政策影响显示出空间异质性,上游地区显示出大量的肥料减少,特别是蔬菜.
这些发现为在中国实施灵活和空间差异化的绿色农业战略提供了宝贵的见解.

关键词:

农业绿色发展农业绿色发展环境影响环境影响土地使用情况土地使用情况有机肥有机肥有机肥空间异质性空间异质性

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