Biologists say the area might be large enough to support a self-sustaining population.生物学家称这个地区的面积可能足以让一个自我维系的种群生存下来。Britain has the largest and most flourishing fox population in Europe.英国拥有欧洲最大也是最具繁殖能力的狐狸种群。The disease has devastated the area's oak tree population.疾病破坏了这个地区的橡树种群。