If children do not get naturally rich upbringing, they can remain unhappy and distressed into their adulthood. So also, if nature is not rich, the society can remain distressed and incomplete.

Natural means harmoniously spontaneous. Harmonious means mutually symbiotic. Mutually symbiotic means win-win relation with oneself and with the ecosystem. Spontaneous means without motive, in the present free from the past. Without motive means selfless. Selfless means without associating or identifying oneself with known and known.

Natural richness means mutually harmonious spontaneity due to richness of constituent cause and conditions without self. Naturally rich, you are selfless undivided whole and complete if not perfect.