Understanding 'Aloof' in Context

In the following passage, the author describes a rare species of tree found in the tropical rainforest:

"The extraordinary Kapok tree stands majestically above the forest canopy, its towering height aloof from the lesser foliage. With a trunk that boasts an impressive girth, it seems to defy the constraints of its environment. Its broad, spreading branches create a sheltering embrace, providing a sanctuary for countless birds and other creatures. Despite its grandeur, the Kapok tree is vulnerable to the very ecosystem it supports—delicate relationships interwoven within the vibrant tapestry of life that constitutes the rainforest."

In this context, what does the word 'aloof' most likely mean?