宝鸡市区土地利用变化分析

Analysis of the changes of land use in urban district of Baoji City

目的揭示宝鸡市区近几十年城市化过程中土地利用变化的机制和规律。方法集成RS与GIS技术,通过对1990,2002,2006,2010和2014年宝鸡市区的Landsat TM/ETM+遥感影像进行处理、计算,研究分析宝鸡市区近20多年土地利用类型的数量、结构变化。结果 11990-2014年,耕地面积减少了117.67km2,建设用地面积增加了105.43km2。2土地利用类型变化呈现出3种变化模式:1990-2002年城市空间区域快速扩张,2002-2006年相对稳定,2006-2014年城市空间扩张和城市建设并重发展(其中,2006-2010年扩张快于建设,2010-2014年建设快于扩张)。结论城市土地利用变化特征能够揭示城市化的过程机制。

Purposes--To reveal the mechanisms and laws of land use in urban district of Baoji City in recent decades. Methods--In combination with the technology of RS and GIS, changes of the vol- ume and structure in land use in recent 20 years were analyzed by processing Landsat TM/ETM plus remote sensing image in 1990, 2002, 2006, 2010 and 2014. Results-- （1） The cultivated land area de- creased by 117.67 kmz and construction land area increased by 105.43 km2 during the period from 1990 to 2014. （2） The changes in land use presented three changes modes. Urban spatial area expanded rapidly during the period from 1990 to 2002, although it stabilized relatively during the period from 2002 to 2006, it expanded more rapidly than building during the period from 2006 to 2010, but build- ing developed more quickly than the expansion of urban land use during the period from 2010 to 2014. Conclusion--Characteristics of the changes in urban land use can reveal the mechanisms of urbanization process.