地球上的自然物种资源是有限的。据有关资料记载,植物中的高等植物自然繁衍率,平均只有百分之七点八,尤其是核果类植物,自繁率更低。人们常用来做山水盆景的钟乳石、海浮石、砂积石,一般要经过一百年才增长一厘米,而化石的形成则需千万年。可见物种资源是何等珍贵!然而我国一些盆景、根艺生产者,特别是那些农民专业户,为了制作盆景、根艺,对有限的自然资源滥采滥挖,使一些原本 Natural species resources on Earth are limited. According to relevant information, the natural multiplication rate of higher plants in plants is only an average of 7.8%, especially for the stone fruit plants, with a lower rate of self-propagation. People commonly used to make landscape bonsai stalactites, sea pumice, sand stone, generally only after a hundred years to grow a centimeter, and the formation of fossils need tens of millions of years. However, some bonsai and root art producers in our country, especially those peasant households, have indiscriminately explored and exploited the limited natural resources in order to make bonsai and root art. Some of the original