额济纳盆地生态系统的地质学分析

本文从生态地质学的角度对额济纳盆地生态系统进行了分析，阐明了额济纳盆地各个生态子系统的地境条件与相应植物群落结构之间的耦合关系。并指出了各生态子系统的稳定性：①河湖岸带生态子系统地境条件最好，但大多数植物的生存域范围狭窄，群落结构并不十分稳定。②湿地生态子系统、荒漠戈壁生态子系统和沙漠生态子系统地境条件较差，但是生长在这些子系统中的大都是一些生存域宽，能够适应恶劣环境的植物，因此群落结构相对较稳定。最后根据各个子系统的特点提出了相应的治理对策。

Ecogeological analysis of E'jina basin

According to geomorphic and hydrologic conditions,ecosystems of E' jina basin can be divided into four subecosystems.Each of the four subecosystems of E' jina basin is analyzed from the views of ecogeology.The result shows:1)underground environment of each subecosystems has close relation with its plant community.2)underground environment of subecosystem of river and lake bank is optimal for plants,but plant community of this subecosystem has low stability due to narrow survival region;3)the three other subecosystems,namely wet land subecosystem, stone deserta subecosystem and desert subecosystem,have relatively terrible underground environment and stable plant community because plants in these subsystems have wide survival region and they can adapt well to various awful environment.Some advisable suggestions are provided for scientific exploration of each subecosystem.