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基于模糊线性规划模型的水-土-作物系统优化配置研究 被引量:6
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作者 孙博 解建仓 汪妮 《资源科学》 CSSCI CSCD 北大核心 2012年第6期1101-1107,共7页
为了进一步对陕西省蒲东灌区农业的规划发展,本文将线性规划模型和模糊优化模型应用到灌区土地-水-作物系统的规划和管理之中。该模型用于优化经济效益、作物产量和劳动力的利用,并寻求相关作物种植模式和对土地,水,肥和劳动力利用下农... 为了进一步对陕西省蒲东灌区农业的规划发展,本文将线性规划模型和模糊优化模型应用到灌区土地-水-作物系统的规划和管理之中。该模型用于优化经济效益、作物产量和劳动力的利用,并寻求相关作物种植模式和对土地,水,肥和劳动力利用下农业系统的优化配置。根据研究区域情况,决定采用线性规划模型的三个目标函数输出数据作为模糊规划模型的约束条件,在模糊目标和模糊约束的模糊环境下,取得模糊优化模型的最优解方案。这些非结构化的模型能够很好的将地表水资源和地下水资源有效地联合利用。此外,对灌区农业系统优化配置后的净效益进行了对比评价。结果表明,本文提出的多目标模糊线性规划管理模型应用到农业系统土地-水-作物的优化配置中是可行的,合理地分配土地和水资源,提高了作物产量和净效益。 展开更多
关键词 土地-水-作物系统 模糊优化 线性规划 优化配置
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Regional Land Use Patterns and Water Consumption in the Jordan Valley Using Geographic Information Systems
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作者 Nazeeh Almanasyeh Zeyad Makhamreh Brian Howard 《Journal of Agricultural Science and Technology(A)》 2012年第5期598-609,共12页
Trends in land use and water consumption are crucial components in understanding the changing nature of agricultural production and water use in- the Northern Jordan Valley. The objective of this study is to examine c... Trends in land use and water consumption are crucial components in understanding the changing nature of agricultural production and water use in- the Northern Jordan Valley. The objective of this study is to examine current agricultural land uses in the Jordan Valley and their water consumption patterns as well as to examine the changes in land use and water consumption that occurred between the years 2002 and 2010. Farm level cropping patterns and total annual water use were analysed in order to examine inter-basin land use and water consumption characteristics as well as to estimate the amount of water consumed by each respective crop in total and per unit of land devoted to its production. It was found that citrus production dominated both land and water usage in every basin of the Northern Jordan Valley and that between 2002 and 2010 there were shifts toward increasing citrus production in almost every basin surveyed. It was found that agricultural irrigation water usage decreased overall between 2002 and 2010 by approximately 15 percent and irrigated land usage in the Jordan Valley increased by 5 percent. The role of citrus farming is becoming more important in the Jordan Valley as Jordan's agricultural economy shifts away from subsistence farming for staple food crops like wheat and vegetables toward more financially lucrative crops grown for an increasingly international market. This trend is at least partly due to the increasing cost of agricultural irrigation water from Jordan's national canal system. 展开更多
关键词 Regional planning GIS Jordan Valley agricultural production water consumption.
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