这里的区系成分除了与其所处的滇中高原邻近地区关系很密切外，与印度等地的稀树草原也有联系，表现出了区系成分的古老联系和稀树草原植被的残余性。
The floristic com-position of the river valley and its relationship to the flora of neighboring district , the India savanna , have been discussed .
稀树草原植被