【摘要】 植被作为影响热环境效应的重要因子,能够起到调节气温和除尘的效果。文中以沈阳市为例,利用RS和GIS技术,通过反演沈阳市中心城区的地表温度和计算植被覆盖度指数,探讨了沈阳中心城区在1995-2013年间的植被覆盖演化及所产生的城市降温效应特征,并深入分析了两者间的内在关联。结果表明:植被覆盖度的变化直接影响着其地表温度的上升与下降,二者存在明显的负相关。研究区内植被覆盖度每提升10%,则平均可降温约0.71℃。植被覆盖度所产生的降温效应因地而异,但总体上差异并不大。更多还原

【Abstract】 An important factor influencing the thermal environment,the vegetation can play a significant cooling and dust removal effect. Taking the big city- Shenyang,Liaoning province as an example,we discussed the vegetation cover from 1995 to 2013,and the urban thermal environment effect of spatio- temporal evolution and characteristics; we further analyzed the intrinsic connection by using RS and GIS technology through land surface temperature and vegetation coverage index calculation. The results showed that the change of Fractional Vegetation Cover directly influenced the surface temperature; there was an obvious negative correlation. when vegetation coverage increased 10% in the area,the surface temperature could decrease about 0. 71 ℃ averagely. The Fractional Vegetation Cover of thermal environment effects varied from place to place,but it had small differences.更多还原