基于遥感影像的平朔矿区植被碳库变化分析

选取中国最大的露天煤矿平朔矿区为研究区，基于遥感影像数据，利用ENVI、ARCGIS等软件平台，研究该区域1987—2010年植被碳汇量的时空变化，并对其碳汇价值进行估算。研究表明，1987年林地碳汇量约占整个矿区植被碳汇量的8995%，随着矿区的发展，林地碳汇量不断减少，之后由于退耕还林政策和矿区复垦，林地碳汇量开始有小幅回升；草地碳汇量在整个矿区植被碳汇量中所占比重较小，呈现先减少、后增加的发展趋势，2010年草地碳汇量与1987年相比，增加了298%；耕地碳汇量持续下降，截至2010年耕地碳汇量减少了2130%，这与矿区开采力度加大、退耕还林政策的实施有关。此外，碳汇价值分析表明，不同的土地利用类型，其碳汇价值不同，林地、耕地、草地的碳汇价值的增减和它们的碳汇量的变化呈正相关关系。

VEGETATION CARBON POOL CHANGE OF PINGSHUO MINEBASED ON REMOTE SENSING IMAGES

This paper selects Pingshuo coal mine, Chinas biggest open pit, and uses ENVI and ArcGIS based on remote sensing images to study vegetation carbon pool change from 1987—2010, and estimates its carbon pool values. In 1987 woods carbon pool quantity was 8995% of whole vegetation, and fell as mine got bigger, and rebounded a little after due to restoration. Grass carbon pool quantity had a small percentage, fell then rose by 298% in 2010 than in 1987. Farmland carbon pool quantity fell continuously by 2130% by 2010, which relates to rising mining and farmland back to woods policy. Carbon pool values vary with land use types, and positively with their quantity in woods, farmland and grassland.