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-  2014 

中国区际间主要农产品虚拟水流动格局稳定性

DOI: 10.11821/dlyj201403007

Keywords: 虚拟水,生态网络安全,虚拟水流动格局网络系统,中国

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Abstract:

摘要: 为分析中国区际间虚拟水流动格局的稳定性及为将来研究虚拟水流动格局维持机制提供理论依据,通过构建1999-2010年中国区际间主要农产品虚拟水流量关系矩阵,引入生态网络安全系统相关概念,构建虚拟水流动格局网络稳定性模型,结果表明:东北、黄淮海和长江中下游地区是中国虚拟水的主要调出区;其他区域是调入区;虚拟水流动格局网络系统的信道数目减少,信道容量逐年降低;系统聚合度和系统冗余度亦呈波动降低趋势;系统网络使用率呈现降低趋势;系统网络空闲率呈增加趋势;网络系统指标表明中国区际间主要农产品虚拟水流动形成的网络系统稳定性逐年降低。最后,提出建立粮食安全预警系统等5方面应对措施

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