期刊论文

中文

长江流域资源与环境

1004-8227

2010

S1

34-39

“十一五”国家科技支撑计划重点项目(2007BAC16B08)；

本校为第一机构

合理的农业结构有利于农业系统发挥更好的整体功能和效益,如何对耕地资源进行合理配置已成为众多学者研究的热点问题。利用系统动力学模型对长沙市耕地资源的变化趋势进行预测,并通过建立多目标优化模型,在综合考虑经济效益、生态效益和粮食安全的前提条件下,研究了2010年长沙市耕地资源优化配置方案。结果表明:通过优化配置,长沙市粮食作物和蔬菜的种植面积得到较大幅度的调整,粮食作物调整后面积比例为60.92%,比调整前减少2.12%;蔬菜种植调整后面积比例为21.96%,比调整前增加3.84%。结构优化配置后,化肥施用总量基本保持不变,经济效益和生态效益比优化前分别提高9.93%和2.03%,有效地促进了农业...

A reasonable agricultural structure has a better effect on the efficiency and overall function of the agricultural system,thus how to distribute the arable land has become a hot research for scholars.The trend of arable land resource was simulated by a system dynamics model in this paper.Then,taking economic benefit,ecological benefit and food security into consideration,we used a multi-objective optimization model to study the optimal allocation of arable land of Changsha in 2010.Results showed that agricultural efficiency and farmers'income could be improved effectively through optimal alloc...