pollen spectrum

例句：

1. 1. The study of pollen spectra has led to a better understanding of plant pollination processes.
   研究花粉谱有助于更好地理解植物的传粉过程。
2. 2. Pollen spectra are used in various fields such as agriculture and environmental science to analyze the pollen composition.
   花粉谱在农业和环境科学等领域被用于分析花粉成分。
3. 3. By analyzing pollen spectra from different regions, scientists can identify the species of plants that are present in a given area.
   通过分析不同地区的花粉谱，科学家可以识别出某一地区存在的植物种类。