Effect of species diversity on invasion of introduced forage grass

本研究的目的是通过野外调查和野外实验，了解“物种多样性对引种饲料植物入侵的影响”。这片草原一直被保存为马的栖息地，是我国的国家自然保护区之一。几年前，小松高冈和本山主要种植结缕草等本土植物。小松冈草地经历了10多年从原生草为主到外来草为主的转变。但是，Ougiyama并没有改变。2、本山地区原生植物的物种多样性高于小松冈地区。小松高冈的土壤含氮量高于母山。外来草不能在物种丰富度高、本土植物密度大的花盆中生长。

The object of this study is to know the "Effect of species diversity on invasion of introduced forage plants"through field survey and field experiments.1, This grassland has been maintained as habitat of native horse that is one of national monument of our country. Few years ago, Komatugaoka and Ougiyama was dominated by native plants such as Zoysia japonica. Komatugaoka changed from native grass to alien grass dominated grassland for over 10 years. But, Ougiyama was not changed.2, The species diversity of native plants was higher Ougiyama than Komatugaoka. Nitrogen content of soil of Komatugaoka was higher than Ougiyama.3. The alien grass can't grow in a pot of high species richness and high density of native plant.