1980—2015年中国建设用地变化研究

土地特别是建设用地的空间格局与演变是城镇研究的热点问题。本文利用1980、1990、1995、2000、2005、2010、2015年7期的中国土地利用遥感数据,对1980—2015年中国建设用地变化进行了系统性的分析。研究工作主要有:①计算1980—2015年中国的城镇用地、农村居民点、其他建设用地及总建设用地的面积和增长率,从而得到1980—2015年中国的建设用地变化速率。②运用GIS软件中的联合分析工具,得到1980—2015年中国建设用地空间变化格局。③制作土地利用转移矩阵,从而得到1980—2015年中国建设用地结构变化情况。研究表明,中国建设用地整体上表现为持续扩张的态势;东部及沿海地区增长速度较快,青藏高原基本无变化,中部及东北地区增长速度较缓,西北地区有少量增加;增加建设用地以耕地转入为主。

Research on the change of built-up land in China from 1980-2015

The spatial pattern and change of land use, especially the built-up land, has become the focus of urban research. This paper uses Chinese land use remote sensing data in 1980, 1990, 1995, 2000, 2005, 2010 and 2015, analyzing the change of built-up land from 1980 to 2015. A systematic analysis is carried out. The main research work is:① Calculating the area and growth rate of urban land, rural residential areas, other built-up land and total built-up land in China from 1980 to 2015, and obtain the rate of change of built-up land in China from 1980 to 2015. ② Using the GIS software joint analysis tool to obtain the change pattern of Chinese built-up land from 1980 to 2015. ③ Making the land use transfer matrix, so that the structure of Chinese built-up land change from 1980 to 2015 can be obtained. The research shows that Chinese built-up land as a whole shows a trend of continuous expansion. The eastern and coastal areas are growing at a faster rate, the Qinghai-Tibet Plateau is basically unchanged, the central and northeastern regions are growing at a slower rate, and the northwestern region has a small increase. The built-up land is mainly transferred, mainly cultivated land.