庄浪县土地利用结构与效益变化关系的研究

发布时间：2018-11-12 13:15

【摘要】：本文以庄浪县作为研究对象,在研究了庄浪县2001-2012年间土地利用变化特征、土地利用结构动态演变规律和土地利用效益变化趋势的基础上,运用灰色关联分析法研究了庄浪县2001-2012年土地利用变化、土地利用信息熵、土地利用结构的变化与各个效益变化的规律与相互关系。研究结果表明:(1)2001年到2012年,庄浪县土地利用结构中,园地、林地、城乡建设用地、交通水利用地以及其他建设用地面积增加,耕地、牧草地、其他农用地、未利用地面积都有所减少,其中面积增加最多的是林地,减少最多的是耕地;面积增加速度最快是林地,而减少速度最快的是未利用地。2001年到2012年,庄浪县土地利用结构的信息熵总体表现出波动上升的变化趋势,表明庄浪县的土地利用系统有序度还不够高。林地、耕地和未利用地对庄浪县土地利用结构的变化产生影响。(2)庄浪县土地利用的经济、社会、生态及综合效益在2001到2012年总体上呈现上升的趋势。土地利用综合效益的提高与经济的发展、社会的进步以及生态环境的改善有着紧密的联系。(3)庄浪县土地利用变化与各效益水平呈较好的关联性,耕地的变化贡献率与各效益属于高度相关,其他用地类型变化贡献率与各效益属于中等相关;9种用地类型的变化强度与各效益属于中等相关,其中耕地、林地、未利用地的变化强度与效益变化的关系较紧密;9种用地类型的动态度与各效益都属于中等相关,其中未利用地、耕地、园地的动态度与经济效益的关联度较高,林地、未利用地的动态度与社会、生态及综合效益的关联度较高,这些用地类型对效益的影响更显著。土地利用结构信息熵与各效益有较好的关联性,信息熵的变化会对土地利用效益的变化产生影响。土地利用结构和效益变化具有较强的关联性,城乡建设用地、园地、交通水利用地与经济效益高度相关,城乡建设用地、交通水利用地、其他建设用地、园地、林地与社会效益高度相关,林地、园地、耕地、城乡建设用地与生态效益高度相关,城乡建设用地、其他建设用地、园地、交通水利用地与综合效益高度相关,说明这些用地类型对土地利用效益水平的提高有显著的影响。合理、有效的利用土地资源,能促进土地利用经济、社会、生态效益的最大化,实现土地资源的可持续发展。
[Abstract]:This paper takes Zhuanglang County as the research object, on the basis of studying the characteristics of land use change, the dynamic evolution law of land use structure and the change trend of land use benefit in Zhuanglang County from 2001 to 2012. In this paper, the law and relationship between land use change, land use information entropy, land use structure change and benefit change in Zhuanglang County from 2001 to 2012 were studied by using grey relational analysis. The results are as follows: (1) from 2001 to 2012, the land use structure of Zhuanglang County, garden land, forest land, urban and rural construction land, land for transportation and water conservancy and other construction land area increased, arable land, pasture land, other agricultural land, The area of unused land has been reduced, among which the increase of area is woodland and the most decrease is cultivated land. From 2001 to 2012, the information entropy of land use structure in Zhuanglang County showed an increasing trend of fluctuation. It shows that the order degree of land use system in Zhuanglang County is not high enough. Forestland, cultivated land and unused land have an effect on the change of land use structure in Zhuanglang County. (2) the economic, social, ecological and comprehensive benefits of land use in Zhuanglang County are on the whole increasing from 2001 to 2012. The improvement of comprehensive benefit of land use is closely related to the development of economy, the progress of society and the improvement of ecological environment. The change contribution rate of cultivated land is highly correlated with each benefit, while the contribution rate of other land types is middle correlation with each benefit. The change intensity of 9 kinds of land use type belongs to medium correlation with each benefit, in which the change intensity of cultivated land, woodland and unused land is closely related to the change of benefit; The dynamic degree of 9 land use types is of moderate correlation with each benefit, among which the dynamic degree of unused land, cultivated land, garden land and economic benefits are relatively high, and the dynamic degree of woodland and unused land is related to the society. The correlation of ecological and comprehensive benefits is higher, and the effects of these types of land use are more significant. The information entropy of land use structure has a good correlation with each benefit, and the change of information entropy will affect the change of land use benefit. There is a strong correlation between the change of land use structure and benefit. The land for urban and rural construction, garden land, transportation water conservancy land is highly related to economic benefits, urban and rural construction land, traffic water conservancy land, other construction land, garden land, Forest land is highly related to social benefit, woodland, garden land, cultivated land, urban and rural construction land are highly related to ecological benefit, urban and rural construction land, other construction land, garden land, transportation and water conservancy land are highly related to comprehensive benefit. These types of land use have a significant impact on the improvement of land use efficiency. Rational and effective utilization of land resources can promote the maximization of economic, social and ecological benefits of land use and realize the sustainable development of land resources.
【学位授予单位】：甘肃农业大学
【学位级别】：硕士
【学位授予年份】：2015
【分类号】：F301.2

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