A forest ecosystem is a terrestrial unit of living organisms (plants, animals and microorganisms), all interacting among themselves and with the environment (soil, climate, water and light) in which they live. The environmental "common denominator" of that forest ecological community is a tree, who most faithfully obeys the ecological cycles of energy, water, carbon and nutrients.
A forest ecosystem has definite boundaries and includes a forest of trees out to the limit of tree growth. Remember that forests are not the only ecosystems. There are hundreds of thousands of defined and undefined ecosystems that can cover the broadest to the tiniest of areas. An ecosystem can be as small as a pond or a dead tree, or as large as the Earth itself.
More on forest ecology issues:
Joyce Kilmer Memorial Forest - Photo by Steve Nix

Comments
its nice but short
it would be nice if u explain it more
A forest ecosystem is a terrestrial unit of living organisms (plants, animals and microorganisms), all interacting among themselves and with the environment (soil, climate, water and light) in which they live. The environmental “common denominator” of that forest ecological community is a tree, who most faithfully obeys the ecological cycles of energy, water, carbon and nutrients.
A forest ecosystem would be considered having boundaries and would include a forest of trees out to the limit of tree growth. Remember that forests are not the only ecosystems. There are hundreds of thousands of defined and undefined ecosystems that can cover the broadest to the tiniest of areas. An ecosystem can be as small as a pond or a dead tree, or as large as the Earth itself.
You should put in some examples alongside.
Well i have no words to express you the most popular word thnaks for such a valuable informations you give us rearding natural resources especially forest.
Thank you very much once again.
this is our theme in our science fair
Helpful to some extant
short n nice but would be excellent if added more details with suitable examples
very very short…………but need every bit of it for my project
This note is very simple langauge . I knew it.
Thanks……
too short but nice thanks for giving me information
evry bit of info is essential for me
essential in day to day life and helpful for projects too…………………….