I want to create a custom web template based on enterprise Document Center in sharepoint 2013. How I create it?
Have a look at Vesas brilliant guide to creating web templates.
The Base ID you should use for a Document Center is BDR#0
Like:
<WebTemplate
Name="MyDocumentCenter"
BaseTemplateName="BDR"
BaseTemplateID="9"
BaseConfigurationID="0"
Title="My Document Center"
Description="Custom document center web template"
DisplayCategory="Custom stuff"/>