摘要
以平朔矿区1987年、1996年、2001年和2005年的Landsat TM影像为数据源,依据地表形态与采矿功能划分5种地表扰动类型,以单通道普适性算法反演地表温度。基于空间统计和面积加权的增温贡献率等方法,分析地表扰动类型的温度分异特征和对矿区增温的贡献程度及动态:露天采坑和工业场地的地表平均温度最高,高出矿区最低温度5～10℃,具有强烈的增温效应;未复垦排土场地表温度处于中等水平,受到排弃物类型和堆置特征的影响,具有较大的时空分异特性,在矿业开发初期具有较高的增温效应;剥离区和已复垦排土场的地表温度较低,具有最低的增温效应,已复垦排土场的增温效应随着恢复生态系统气候调节功能的显现呈逐年降低趋势。
Landsat TM thermal infrared（TIR） bands was used to estimate the spatial dynamics of surface temperature by single-channel method in 1987,1996,2001,and 2005 in Pingshuo opencast coal mine area in Shanxi Province,China.The land disturbance types were classified by remote sensed data,which include opencast coal pit,soil removed land,piled land,reclamation land,and industrial centers.An area weighted method was proposed to evaluate the contribution rate of certain disturbance type on temperature increase.Results show that the surface temperature in coal pit and industrial centers are the highest,which are 5～10 ℃ higher than the lowest temperature in study area;the contributions of coal pit and industrial centers to temperature increase are great;surface temperature heterogeneity is high in piled land for the differences in waste types and piling structures,and the temperature values are at a middle level;piled land contributes to temperature increase evidently in the first stage of mining;temperature of soil removed land and reclamation land are the lowest in each period;temperature increase contribution of reclamation land decrease for the climate controlling effects of vegetation.
出处
《煤炭学报》
EI
CAS
CSCD
北大核心
2011年第4期643-647,共5页
Journal of China Coal Society
基金
国土资源部公益性行业科研专项基金资助项目(200911015)
关键词
露天煤矿
地表扰动
地表温度
复垦
平朔矿区
opencast coal mine
land disturbance
surface temperature
land reclamation
Pingshuo mining area
