密丛中禾草主要为针茅属植物,重要的有5个建群种,它们虽然植物种数不多,但分布面积大,在中国北方草地东部草原类草地区域有极重要的地位,而且它们都有明确的地理分布范围。
通过水分梯度实验发现丛生禾草针茅对水分胁迫的耐性高于根茎型禾草羊草,表明了针茅类植物对干旱半干旱区的高度适应性。
On moisture gradient, the patience of bunchgrass stipa to water stress is more strong than rhizomatous grass, which shows stipa plants more adapt to develop in the arid and semi arid areas.
野大麦属短根茎丛生型禾草,是典型的无性系植物。
Hordeum brevisubulatum is a typical clonal plant of grass family with short rhizome.
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