Concept:
The idea that the domination of women and the domination of nature are connected is central to ecofeminism.
Ecofeminism studies the relationship between patriarchy, environmental destruction and women's oppression.
Step 1: Understand the statement.
The statement says that:
\[
\text{subjugation of women}
\]
and
\[
\text{subjugation of nature}
\]
are essentially similar.
This means both are forms of domination.
Step 2: Connect with ecofeminism.
Ecofeminists argue that patriarchal systems often treat both women and nature as objects to be controlled.
This idea is strongly connected with Vandana Shiva.
Step 3: Identify the thinker.
Vandana Shiva is an important Indian ecofeminist thinker.
She has written extensively on women, ecology, development and environmental justice.
Hence:
\[
\boxed{\text{Vandana Shiva}}
\]