Abstract: By using the χ²-test with contingency table and the Spearman correlation coefficient, the interspecific relationships among the main plant species in Ebinur Lake Wetland Nature Reserve were investigated. The main plant species in the Reserve were divided into 4 ecological groups, i.e., Haloxylon ammodendron + Halocnemum strobilaceum + Poacynum henclersonii + Kalidium foliatum + Reaumuria soogarica + Suaeda glauca + Karelinia caspica + Alhagi sparsifolia + Seriphidium kaschgaricum + Nitraria schoberi + Phragmites australis, Aeluropus littoralis + Tamarix ramosissima + Atriplex patens + Suaeda microphylla + Halimodendron halodendron + Cynanchum sibiricum + Halostachys caspica, Populus euphratica + Haloxylon persicum, and Lactuca auriculata + Glycyrrhiza uralensis + Asparagus persicus + Leymus secalinus + Apocynum venetum. The plant species in each group had the largest connection and correlation, and the longterm evolution made each ecological group have the greatest adaptive capability to its environment. The four ecological groups lived separately in the salinized lowland plain of desert transitional zone, saline land of lakeside, desert, and the spots in desert’s dominant species in this area. For the protection and recovery of the plants in the Reserve, it would be more effective to protect and recover the whole ecological species group rather than the individual plant species.

Key words: Chilo suppressalis, Geostatistics, Partial estimation, Overall estimation, Sampling