在技术异质性下对海洋养殖生态效率的评估和优化 - - 中国沿海地区的新证据
1Business School, Qingdao University, Qingdao, PR China; Qingdao University, No. 308, Ningxia Road, Shinan District, Qingdao, Shandong 266061, China.
Marine pollution bulletin
|June 11, 2024
概括
中国中国中国中国.
科学领域:
- 环境科学 环境科学
- 农业经济学 农业经济学
- 海洋生物学 海洋生物学
背景情况:
- 鱼类养殖对中国的经济和粮食安全作出了重大贡献.
- 评估生态效率对于可持续的海洋养殖发展至关重要.
- 技术异质性会影响效率评估.
研究的目的:
- 用一个元边界框架分析中国水产养殖的生态效率.
- 确定区域差异和水产养殖效率低下的主要驱动因素.
- 为改善水产养殖生态效率提供有针对性的建议.
主要方法:
- 结合元边界分析与Slack-Based Model数据包围分析 (SBM-DEA) 进行不良输出.
- 根据元边界和组边界评估的生态效率.
- 分析了不同经济区的低效率 (管理与技术) 的来源.
主要成果:
- 在元边境下,水产养殖的平均生态效率为0.586,表明41.4%的改善潜力.
- 在集团边界下,平均生态效率更高,为0.783.
- 波海边 (BR) 和长江三角洲 (YRD) 经济区的低效率主要是由管理和技术低效率驱动的. 在珍珠河三角洲 (PRD),这些因素更为平衡.
结论:
- 在中国,有很大的空间来提高水产养殖的生态效率.
- 效率驱动因素的区域差异需要定制的改进策略.
- 提出了四种不同的途径,以提高水产养殖的生态效率和可持续性.
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