What is the theme in Drought Year by Judith Wright?

Nature and Its meanings make up a major theme in the poem. Wright is a conservationist as well as a poet. A drought, therefore, might seem a strange subject for an environmentalist intent on giving nature a positive image. Perhaps then, the drought in "Drought Year" is primarily anthropogenic (human-caused), like the Dust Bowl disaster in Thirties America. This would show nature as victimized by human action, something a conservationist might want to stress. There is, however, no evidence for this. Wright's drought seems solely due to lack of rain.