【解决办法】var layer = viewer.imageryLayers.addImageryProvider(new Cesium.SuperMapImageryProvider({
url : 'http://localhost:8090/iserver/services/map-Population/rest/maps/PopulationDistribution',
layersID: 'fc6eb92612454754af347e1901b4a259_0231c94a9301410ebb5ed71fbf131d67'
}));layersID为临时图层id
