项目名称: 基于农户决策行为的农作物时空格局动态变化机理机制研究
项目编号: No.41271112
项目类型: 面上项目
立项/批准年度: 2013
项目学科: 天文学、地球科学
项目作者: 吴文斌
作者单位: 中国农业科学院农业资源与农业区划研究所
项目金额: 75万元
中文摘要: 针对目前国内外农业土地利用科学中农作物时空格局动态变化机理机制研究欠缺的现状,项目以东北黑龙江省的宾县为研究区域,引入Agent模型的理论和技术,从微观智能体(农户)决策行为机理研究入手,进行农户类型划分,并分析影响农户农作物选择决策的关键因子;在此基础上,构建耦合自然和社会经济因素的农作物选择决策模拟模型,实现对农户作物选择决策过程和途径的科学表达,进而科学阐明过去20年(1990-2010年)农作物时空格局动态变化的机理机制。本研究有利于科学揭示微观主体土地利用行为与宏观农业景观格局之间的互动机理,促进农业土地利用科学有关理论、技术和方法的发展和完善;有利于东北区域农户土地利用行为的调控和农业生产格局的优化,保障国家和区域粮食安全和促进农业可持续发展。
中文关键词: 农作物选择;模拟模型;Agent;农户;机理机制
英文摘要: In this study,BinXian County in Heilongjiang Province is selected as the study area to investigate and understand the mechanisms of dynamic changes in spatio-temporal cropping patterns.To do that,an agent-based model is construcuted to study the households'decisions on crop choices at the micro level and further to understand the macro-level spatial patterns of major crops including maize,soybean and rice. The household agents are classsied into several types based on the household interview. For each category of household agent,decision on crop choice is determined by multiple driving forces including the endogenetic and exogenetic factors. A utility function is finally introduced to parameterize the decision process for each type of agent.Using this model,the historical changing processes of cropping patterns over past 20 years can be simulated and its mechanism can be understood.This study will help to propose the key scientific issues in Agricultural Land Change Science and to promote the development of theories, methodologies and techniques in related disciplines.
英文关键词: Crop choice;Model simulation;Agent;Household;Driving mechanism