WU Wen-jie,SHI Pei-ji,HU Wei.Analysis on Human Driving Force of Land Use and Land Cover in Hexi Corridor under the Background of Urbanization[J].Research of Soil and Water Conservation,2011,18(03):88-91,96.
城市化背景下河西走廊LUCC的人文驱动力分析
- Title:
- Analysis on Human Driving Force of Land Use and Land Cover in Hexi Corridor under the Background of Urbanization
- Keywords:
- PCA; gray correlation; cultivated land; human driving force; Hexi corridor
- 分类号:
- F301.24
- 摘要:
- 城市化意味着城镇用地扩展，城市文化、城市生活方式和价值观在农村地域的扩散过程。耕地非农化是城市化过程中的一种必然现象，耕地数量的变化体现一定的社会经济发展规律。该文以城市化为背景研究耕地数量变化特征，采用主成分分析结合灰色关联分析的方法，以河西走廊5市1990-2008年的耕地面积、社会经济、人口统计数据为基础，对地区耕地变化的人文驱动力因素进行了分析和验证。结果表明：（1）近20a，河西走廊耕地数量经历了“增加-急剧减少-急剧增加-缓慢减少-平稳增加”的波动式变化过程，且空间相对变化显著。（2）河西走廊经济增长与耕地非农化存在近似“kuznets”曲线型关系，随着经济发展，耕地非农化速度先增大，而当经济发展到一定阶段时，随着经济增长耕地非农化速度逐渐减小，最终趋于平稳。（3）以城市化水平、社会经济以及农业技术发展为代表的人文驱动力因子在研究区近20a耕地的变化过程中起主导作用。
- Abstract:
- Urbanization means urban expansion and the diffusion process of urban culture,urban lifestyles and values in the rural areas.Farmland conversion is an inevitable phenomenon,changes in land resources reflect certain social and economic development processes.This paper analyzes the variation characters of cultivated land in the context of urbanization;then with the basic cultivated land,socio-economic demographic data in 1990-2008 of Hexi corridor,using principal component analysis and gray relational analysis method,the human driving force on changes of cultivated land was verified and analyzed.The results show:(1) In last 20 years,changes of cultivated land in the Hexi Corridor had experienced a wavelike process of change as ’increase-drastically reduced-dramatically increasing-slowly decreasing-smoothly increasing’;(2) Economic growth and farmland conversion existed an approximate ’kuznets’ curve type relationship;(3) Human driving forces made significant effect on cultivated land change of urban areas which are represented by urbanization level,social economy and agricultural technology.
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备注/Memo
收稿日期:2010-11-3;改回日期:2010-11-27。
基金项目:国家自然科学基金项目“内陆河流域城镇体系与流域空间结构相互作用的生态经济效应研究：以石羊河流域为例”（40971078）
作者简介:吴文婕（1986- ），女，新疆乌鲁木齐人，硕士生，主要从事城市与区域可持续发展研究。E-mail：15294210239@126.com