Ow does the outdoor environment support childrens personal, social and emotion development?

Literature Review based ONLY on the following 3 major questions/areas?
1. Is self esteem, confidence an independence crucial for childrens positive development?

2. How do the outdoor facilities and resources contribute to the development of childrens self esteem and confidence? Do they ultilize the outdoor space effectively?

3. How do staff promote childrens confidence and self esteem outdoors (ie the playground, forest) How do they encourage children to take risks?

(I have attached the introduction of my dissertation just to give you a better idea of what I am looking for)
Harvard Referencing System This is not an essay but a literature review. ta.
Please DO NOT USE AMERICAN SOURCES ie. american journals, articles etc.