摘要
在快速城市化进程中,我国建设用地急剧扩张,分析建设用地在时间和空间上的变化规律及其原因,对促进我国土地资源的可持续利用具有重要指导意义。基于2001、2006、2011、2017年四期MODIS Land Cover(MCD12Q1)产品数据,结合经济数据和地貌类型数据,研究中国不同经济区和不同地貌类型区的建设用地扩张的时空变化特征,结果表明:(1)全国建设用地在2001~2006、2006~2011、2011~2017年3时期扩张强度逐渐变弱,扩张速度逐渐变慢。(2)2001~2017年建设用地扩张主要发生在东部地区,该地区扩张强度最强、扩张速度最快。3时期内东部地区建设用地扩张强度逐渐变弱,扩张速度逐渐变慢;中部地区扩张强度逐渐变强,扩张速度逐渐变快;西部地区扩张强度先变弱后趋于稳定,扩张速度逐渐变慢;东北地区扩张强度先变弱后趋于稳定,扩张速度先变快后变慢。(3)2001~2017年建设用地扩张主要发生在平原地区,扩张强度最强,丘陵地区扩张速度最快;平原地区建设用地扩张强度逐渐变弱,扩张速度逐渐变慢;丘陵地区扩张强度先变弱后变强,扩张速度先变慢后变快;山地地区扩张强度逐渐变强,扩张速度先变快后变慢;高原地区扩张强度逐渐变强,扩张速度逐渐变快。从研究结果可知,不同经济区建设用地扩张强度和速度具有差异性,主要受不同时期国家相应的区域政策影响;不同地貌类型对建设用地扩张的时空特征也会产生影响。
In the process of rapid urbanization,the construction land in China has expanded rapidly.It is essential to analyze the characteristics and causes of the changes in construction land in time and space,which would promote the sustainable use of land resources in China.Based on the MODIS Land Cover Type product(MCD12 Q1)in the years 2001,2006,2011 and 2017,the characteristics of temporal and spatial changes in construction land in different economic regions and geomorphological areas were analyzed with the help of economic and geomorphological data.It was found that:(1)The expansion intensity of construction land(EI)gradually weakened in China in the three periods from 2001 to 2006,2006 to 2011,and 2011 to 2017,and the expansion speed(ES)gradually slowed down.(2)The expansion of construction land in 2001~2017 mainly occurred in the eastern region,which had the strongest EI and the fastest ES.In the three periods,the EI in the eastern region gradually weakened,and the ES gradually slowed down;the EI in the central region gradually became stronger,and the ES gradually became faster;the EI in the western region became weaker first and then stabilized,and the ES gradually slowed down;the EI in the northeast region weakened first and then stabilized,and the ES became faster first and then slowed down.(3)The expansion of construction land in 2001~2017 mainly occurred on the plains,with the strongest expansion intensity while the fastest expansion speed in the hilly areas;the EI on the plains gradually weakened during the three periods,and the ES gradually slowed down;the EI in the hilly areas became weaker first and then became stronger,and the ES slowed down first and then became faster;the EI on the mountainous areas gradually became stronger,and the ES became faster first and then became slower;the EI on the plateaus gradually became stronger,and the ES gradually became faster.It can be seen from the results that the intensity and speed of construction land expansion in different economic zones were different,which was mainly affected by the corresponding regional policies of the nation in different periods;different geomorphological types also affected the spatial and temporal characteristics of construction land expansion.
作者
刘沁萍
朱闯
田洪阵
蔡为民
乔荣锋
LIU Qin-ping;ZHU Chuang;TIAN Hong-zhen;CAI Wei-min;QIAO Rong-feng(School of Economics and Management,Tiangong University,Tianjin 300387,China;Land Use Engineering Research Center,Tiangong University,Tianjin 300387,China;School of Environmental Science and Engineering,Tiangong University,Tianjin 300387,China)
出处
《长江流域资源与环境》
CAS
CSSCI
CSCD
北大核心
2020年第10期2113-2123,共11页
Resources and Environment in the Yangtze Basin
基金
天津市哲学社会科学研究规划项目(TJGL20-012)
天津市高等学校创新团队培养计划(TD13-5038)
天津市高等学校人文社会科学研究项目(20142111)。
关键词
建设用地扩张
时空特征
MCD12Q1
中国
construction land expansion
temporal and spatial characteristics
MCD12Q1
China
