我遇到了同样的问题，以下命令可以帮助我.

I had same problem and following commands help me.

首先，我添加了conda通道(最后一个通道具有最高优先级).

First of all I added conda channels (last channel has highest priority).

conda config --add channels conda-forge
conda config --add channels anaconda

然后尝试使用conda创建新环境.

Then try to create new environment using conda.

conda create -n geoPython3 python=3.6 geopandas=0.4.0 gdal=2.2.4

让我知道是否有帮助.