伊犁河谷湿地镰叶锦鸡儿群落的植物组成分析

伊犁河谷湿地镰叶锦鸡儿群落调查样方中,共有64种植物,隶属于29个科,6个株生长型,3个根生长型,6个生活型,5个水分生态类型。其中,菊科和禾本科种类最多,各占14.0%,豆科占12.5%;株生长型结构以直立型种类最多,占39.0%,分枝型和丛生型分别为25.0%和22.0%;根生长型结构以直根型的种类最多, 占50.0%,刷状根型和根茎型各占25.0%;生活型结构以地下芽植物最多,占42.0%,地面芽植物次之,占33.0%,一年生植物占12.5%;水分生态类型结构以中生型种类最多,占57.8%,中旱生型和中湿生型分别为14.0%和12.5%。以上结论表明,伊犁河谷湿地镰叶锦鸡儿群落具有中温带群落植株和根系特点,典型的中温带地下芽植物气候特征和中生生境条件特征。

Analysis on the composition structure of plant species in Caragana aurantiaca community in the Yili River Valley Marshes of Xinjiang

The Caragana aurantiaca community of the Yili River Valley situated on the riverbank marshes near the Jiefang Bridge of Tianshan town of Zhaosu county in Xinjiang. Investigated sample sites in this area, all the 64 species of plants belonged to 29 families, 6 growth forms of plant, 3 growth forms of root, 6 life forms, 5 ecological types of water. Among them, the species of Compositae and Gramineae respectively took the most of 14.0%, and which of Leguminosae are 12.5%. The species of upstanding type were 39.0% of the growth form of plant, as well as those of divaricate type and tufty type were 25.0% and 22.0%, respectively. Among the growth form of root, the most of 50.0% belong to taproot type, as well as brushy root type and rhizome type both reached 25.0%. The life forms of the most belonged to geophyte which was 42.0%, hemicryptophyte and therophyte were 33.0% and 12.5%. The species of mesophyte were the most of ecological type of water which reached 57.8%,and those of mesoxerophyte and mesophydrophyte respectively were 14.0% and 12.5%.In the marshes of Yili River Valley, the plants and roots took on the characters of middle temperate plant community and roots characteristics, the climate was typical middle temperate geophyte, and had a mesophytic habitat.