长江流域资源与环境 >> 2014, Vol. 23 >> Issue (01): 67-.doi: 10.11870/cjlyzyyhj201401010

• 自然资源 • 上一篇    下一篇

贵州省大坝土地利用变化及驱动力分析

姚原温| 李阳兵| 金昭贵| 姚敏   

  1. (1贵州师范大学地理与环境科学学院|贵州 贵阳 550001;2贵州省松桃县第三中学|贵州 松桃 554100)
  • 出版日期:2014-01-20

ANALYSIS OF LAND USE CHANGE AND DRIVING FORCE IN GUIZHOU

YAO Yuanwen1|LI Yangbing1|Jin Zhaogui1|Yao Min2   

  1. (1School of Geographic and Environmental Sciences|Guizhou Normal University|Guiyang 550001|China;
    2The third middle school of Songtao|Guizhou|Songtao 554000|China)
  • Online:2014-01-20

摘要:

选取贵州省万亩(1亩=1/15 hm2)以上的坝子为研究对象,以GIS为技术支撑,通过空间叠加分析,提取研究区10 a来的土地利用/覆被信息,并结合相应的社会经济统计数据,进一步分析引起变化的驱动力影响因子。结果表明:(1)2000~2005年、2005~2010年两个时段,耕地面积一直在持续减少,第二时段的变化比第一时段更剧烈;林地、城镇建设用地、农村居民点、水域、道路在两个时段都不同程度的增加,其中城镇建设用地、农村居民点在第二时段比第一时段增加的速度更快,其它3种地类增加的速度有所减缓;灌木总体变化是出现先减后增的趋势;(2)耕地在2000~2005年的流向主要是林地,在2005~2010年流向主要是居民点和城镇建设用地;(3)研究区土地利用变化受人口、经济效益、政策的影响

Abstract:

Understanding land use change and associated driving forces is fundamental for optimizing land use and providing scientific basis for sustainable utilization of land resources We selected the basins that are larger than 10 000mu in Guizhou Province in the present study Using GIS techniques and spatial analysis,land use/ over information of recent 10 years was extracted and the cause of changes was further studied With support of socioeconomic data,the results showed that the area of cultivated land continually reduced and the second study period (ie,2005-2010) was severer than the first (ie,2005-2010). The decreased cultivated lands were 7 87473 hm2 and 10 52173 hm2,showing an continuous reducing trend In the two temporal phases,forested lands,urban construction lands,rural residential areas,water,and roads increased in different degrees Meanwhile,urban construction lands and rural residential areas in the second temporal phase increased much faster than the first one,while the other three type of lands increased more slowly Shrublands were firstly decreased and then increased Cultivated lands were mainly turned to woodlands from 2000 to 2005,and mainly to rural residential areas and urban construction lands from 2005 to 2010 The variation of cultivated land was the major characteristic of land use change in the study area There are two possible driving forces of these land changes The first one was state policy (such as the urbanization promotion and new rural construction). The second one was increasing mining and traffic flow Using principal component analysis,we classified and standardized 10 factors The results showed that land use change in study area was affected by population,economic benefits and policy An increasing population led to urban construction and increasing rural residential areas Land use intensity should be enhanced to meet the increasing population and the rising consumption demand Policy also had an impact on the land use[HJ1][HJ]

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