The poem starts with an expression of doubt and, perhaps, curiosity. The speaker "wonder[s]" about the trees—that is, the speaker has some thoughts or questions about them.
The speaker then poses a rhetorical question: "why do we" put up with—even desire—the "noise" made by trees? Why is it that human beings prefer that noise (by which the speaker presumably means the rustling of the leaves in the wind) over any other noise? More specifically, the speaker wonders why people plant trees near where they live (or live near where there are trees).
It's a strange question, one that suggests that the sound of the trees is something people suffer ("bear") rather than enjoy. The speaker's gripe with the sound of the trees isn't yet clear, but it's obvious enough there is one!
Note how the opening five lines depict this "noise" through sound. The mixture of /w/ alliteration and sibilance, for example, suggests the sound of rustling leaves, or of air whooshing through the trees in question:
I wonder about the trees.
Why do we wish to bear
Forever the noise of these
More than another noise
So close to our dwelling place?
There's a subtle end rhyme created through "trees" in line 1 and "these" in line 2 that creates a feeling of melody and momentum. That sense of melody, in turn, boosted by the assonance of long /oh/ sounds of "So close" (which also draws attention to just how "close" people tend to live to these). The diacope of "noise" (repeated in lines 3 and 4) also calls attention to the fact that this particular noise is special; people prefer the rustling trees to, say, the hum of cars on a highway.
And, finally, the intense enjambment from lines 1-5 pulls readers down the page until the firm end-stop after "place." This movement, in turn, evokes the movement of the trees' branches themselves.