农户土地利用决策对农业景观格局的影响研究——以陕西省米脂县孟岔村为例

探讨微观主体——农户土地利用行为与宏观农业景观格局之间的互动机理,对于了解农户行为的变迁,认识和理解农业景观格局的演变特征和过程,进而调控农户土地利用行为和优化农业景观格局,显然具有重要的理论与现实意义。论文利用构建的农户土地利用决策模型、个体对群体与群体对整体权重影响模型,利用实际收集的陕西省米脂县孟岔村2007年与2008年数据(地籍、地块面积与农户收入等数据),探讨占优势的土地利用决策与占优势的农业景观格局关系。得出如下结论:①占优势的土地利用决策并不一定形成该土地利用方式占优势的土地利用格局;②当年占优势的农户整体土地利用决策并不一定形成次年该土地利用方式占优势的土地利用格局。并提出今后需要进一步研究与探讨的问题:①完善农户土地利用决策模型,在模型中增加风险规避、土地轮作、特殊地类转化等因素;②进一步探索整合地块面积及其空间布局与土地利用决策的方法。

The Study on the Effect of the Household Decision-making to the Agriculture Landscape Pattern:A Case Study for Mengcha Village of Mizhi County in Shaanxi Province

It is important to discuss the mechanism between the household land use behavior and the agriculture landscape pattern. This research is helpful to understand the transition of the household behavior, and comprehend the evolution process and characteristics of the landscape pattern. Making use of the cadastral data and parcel area of 2007 and 2008 of the Mengcha village, this paper uses the household land use decision-making mode and the weight-influence mode to research the relationship between the dominant land use decision-making and the dominant landscape pattern. From our study and analysis, a number of observations and conclusions can be drawn on the implementation: 1) the dominant land use decision-making must not produce the dominant landscape pattern by this land use decision type; and 2) The whole household dominant land use decision-making in this year must not produce the dominant landscape pattern by this land use decision type in the next year. Our future research work will focus on the following aspects: 1) in order to improve the individual land use decision-making mode, the mode should involve the risk adverse factor, the crop rotation factor and the special land use type transition rule factor; and 2) it is necessary to research the integrated method which consider the land use parcel area and the individual land use decision-making comprehensively.