报道了滇池15个监测断面透明度和不同水深的光照强度，以及借助于沉水植物群落昼夜光补偿点所得到的沉水植物光补偿深度。
Studies were made on the transparency, the vertical distribution of light intensities and the light compensation depth of submerged macrophyte at the 15 monitoring sections in Lake Dianchi.
结果表明，一品红具有较高的光饱和点和较低的光补偿点，是对光照强度适应能力较强的阳性植物，但不同栽培品种对遮荫环境的适应性有较大差异。
The results indicated that poinsettia was a sun plant with high light-saturation point and low light-compensation point. But the shade tolerance of different cultivars was different.
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