Study on Vegetation Community Characteristics and Species Diversity of Halophytic Vegetation in Typical Oasis of Northwest Arid Area
The vegetation community characteristica and species diversity of halophytic vegetation in a typical oasis of the Northwest Arid Area - the delta oasis of Weigan and Kuqa River were analyzed by the method of numerical classification. The reaults indicated that the community Ⅳ with Haloxylon ammodendron as aingle dominant species had the highest dominance index and the lowest richness index , diversity index and evenness index, of which composition was simple. The community Ⅱ with Alhagi sparsifoiia and Haloxylon ammodendron had the higher diversity index and evenness index, and the lower dominance index. The dominant species was not obvious which had a stable composition. The community Ⅰ with Tamarrixram osissina and Haloxylon ammodendron as dominant apecies had the highest richness index and middle lever dominance index. diversity index and evenness index which had a complex composition of rich species. The community Ⅵ with Phragm ites australis and Alhagi sparsifolia as dominant species had the higher richness index and diversity index , the middle Jever dominance index and evenness index; The community Ⅲ and Ⅴ had the higher middle lever richness index, dominance index, diversity index and evenness index which had a stable composition.
NETL
NSTL
万方数据
维普
