古生物地理分析表明：三叠纪时，秦岭北侧属于温带生物区系，秦岭南部属于热带-亚热带生物区系。
According to the paleobiogeographic analysis, the southern region of Qinling belonged to tropical - subtropical zone, while the northern region of Qinling to temperate zone in Triassic.
无疑热带地区真的是生物进化的温床，还有，在热带地区存留着一定数量的老物种，这就说明了热带地区物种的死亡率比温带地区要低，所以热带地区还是存有多样物种的大型博物馆。
There are also a number of old genera in the tropics, indicating that tropical extinction rates are lower than in temperate regions. So the tropics are also a museum of diversity.
高羊茅是温带地区一种重要的多年生冷季型草坪草，生物技术在其品质改良中具有很大的应用潜力。
Biotechnology has a great application potential in variety improvement of Tall Fescue, which is an important cool-season perennial turf grass in the temperate region.
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