how are hardy's descriptions of nature in phase 3 relate to the characters in this part?

The whole phase is enriched with descriptions of nature which are directly related to the

main characters of this phase, Tess and Angel.Tess is as fresh and rebooted as thyme-scented and bird-hatching mornings in may. She is developed and matured as instalment of flowers, leaves, nightingales, thrushes, finches and such ehemeral creatures took up their positions once again. On the other hand Angel Clare is as cool and fresh as early mornings of the spring season are.