北京外国语大学国际课程中心把生物课搬到户外啦！

　　把课堂搬到自然，生物课当然要接地气！

　　阳光透过树叶的缝隙，洒在专注的脸庞，每一次呼吸都充满了自然的芬芳。在大自然中，生物不再是书本上的彩色图片，而是触手可及的鲜活体验。用指尖去感受叶脉的纹理，用笔尖去记录发现的惊喜，让知识在自然的怀抱中尽情绽放。

　　在生物学科组王歆珺老师的带领下，北京外国语大学国际课程中心12年级生物小队出发紫竹院公园进行实地勘测。同学们在老师的指导下，使用随机采样和系统采样两种调研方法对紫竹院公园的植被进行调研。

　　王歆珺老师介绍道：“通过实地勘测的方式可以更好地帮助同学们理解各种生态学概念及其应用，比如物种分布比例和物种分布频率，如何设置样方，随机采样所需要的面积测试和系统采样需要的地形变化，最终采集到的数据使用Simpson index加以分析。”

　　张迪予同学分享到：“在紫竹院公园进行实地调查的过程中，我深刻感受到了生物多样性的丰富和生态系统的复杂。通过对比湖边和竹林两个不同栖息地的物种多样性，我学会了如何科学地收集和分析数据。我们花费了20分钟制作精确的样方框，并完成了数据收集。随后我们学习了如何计算Simpson指数，并理解了它在衡量生物多样性中的意义。蚊虫的侵扰让我体会到了进行物种调查的艰辛，但这个过程也锻炼了我的观察力和耐心，同时增强了我对维系生物多样性的认识。每一次发现都让我无比兴奋，这次实践经历不仅让我更加尊重生命，也激发了我对生物学深入研究的热情。”

　　张继匀同学也分享到：“When we were learning about the samplings of species, the use of quadrats in random sampling was quite confusing. Hence, our Biology teacher Anna took the class on a field trip to experiment with the biodiversity of a specific habitat. Our destination was Zizhuyuan Park, we were divided into two groups which had to measure either land close to the water or land far from the water. The quadrat we need is a square frame that marks off an area with its species. We made the quadrat out of strings of 50 centimetres and formed 25 squares. The number of species collected from the two groups was very different. From the land near water, the group has discovered 8 species of plant, however the other group only found 2 species. Also, we had to count the number of individuals in each species in 10 squares randomly picked to complete the random sampling process. After measuring and comparing, we made tables for the data collected and analyzed Simpson’s index of diversity over calculation. The result from the calculation showed the difference in biodiversity between the two places which referred to the effect on environmental conditions.”

　　阳光、树叶、芬芳的空气，还有那些触手可及的生命体，共同构成了一个充满生命力的生物课堂，而学生求知的渴望和求真的精神，正在此间悄然生根发芽。让我们一起期待下一次的探索之旅吧！

>>>推荐阅读：北京外国语大学国际课程中心师资和升学，不愧是排名前十的Alevel学校！

>>>点击查看：北京外国语大学国际课程中心A level课程招生简章