Abstract:

Abstract: 【OBJECTIVE】Natural plant was studied in salinization-desert zone in Manas river valley. The dominant species in salinization areas can improve ecological stability and maintain high productivity in the farm; 【METHOD】Through the analysis of plant species composition, community diversity and niche breadth, dominant species were selected and its species diversity were studied; 【RESULTS】Peganum harmala L, Tamarix hispida, Salsola collina , Kalidium foliatum as dominant species; From the analysis, the niche breadth of soil salinity, organic matter, total nitrogen and soil water content respectively were 0.5832, 0.4800, 0.4379 and 0.2201. it shows that natural plants this areas adapt to saline environment, especially Peganum harmala L, Tamarix hispida, Salsola collina, Kalidium foliatum; 【CONCLUSION】the species diversity, is not high in salinization-desert zone, limited by salt and water. Peganum harmala L, Tamarix hispida,Salsola collina, Kalidium foliatum as dominant species were selected, it can help to steady and restore the degraded ecosystems in salinization-desert zone.