摘要
长时间序列的煤矿区土地利用变化时空演变特征是综合分析与评价煤田生态环境状况的关键因子。该文以山西六大煤田为研究区域,基于MOD13Q1时序NDVI数据对土地覆盖类型的响应特征,结合实地调查监督分类得到山西六大煤田15a土地利用结构图,定量分析该区域生态变化进程。研究表明:该区域NDVI在2001-2005年、2005-2010年和2010-2015年三个阶段增幅逐渐降低,总体仍呈现增加趋势,低NDVI的土地利用类型向高NDVI转移占比较大;2001-2011年和2011-2015年六大煤田土地利用变化速度减弱,逐渐趋于稳定,土地转移热点区域集中在市辖区并向外辐射;林地显示出单调性变化,其它用地演化相对无序,受政策影响明显,呈现出阶段性特征,林地和耕地的净变化为主导变化,耕地和工矿用地转为其他用地为主导转移。
This research took six coal fields in Shanxi as the research area,and based on the response characteristics of MOD13 Q1 time-series NDVI data to land cover type,combined with field surveys,a 15-year land use structure chart was obtained through supervised classification. Then the regional ecological change process was analyzed quantificationally. The conclusions are as follows： The growth of NDVI in this region in 2001-2005,2005-2010 and 2010-2015 was gradually reduced,but the overall trend was still increasing in three stages; a large proportion of the the land use types with low NDVI values transferred to the types with high NDVI values.In 2001-2011 and 2011-2015,the land use change rate of six coal fields weakened,gradually stabilized,and the land transfer hot spots concentrated in the city,and radiated outwards around. The woodland showed monotonous change,other land use evolution was relatively disordered,and affected by the policy obviously. The net changes of forestland and arable land were the dominant change,arable land and industrial and mining land transferring to other land accounted for a larger proportion.
作者
景振华
刘珺
李松青
JING Zhenhua;LIU Jun;LI Songqing(College of Mining Technology, Taiyuan University of Technology, Taiyuan 030024 China;College of Geomatics and Geoinfommtion, Guilin U- niversity of Technology, Guilin 541006, China)
出处
《干旱区资源与环境》
CSSCI
CSCD
北大核心
2018年第8期80-86,共7页
Journal of Arid Land Resources and Environment
基金
国家自然科学基金项目(41201438)
山西省青年研究基础项目(2014021032-1)资助
关键词
时序NDVI
煤田
时空变化
山西省
time series NDVI
coal fields
spatial - temporal variation
Shanxi province
