Based on field investigation

guided by the principle of maneuverability

sciences

comparability

acceptability

this paper took health assessment of Badaling forest center about plant species diversity

construction of forest community

canopy density

cover of shrub community

age structure

stand

soil erosion

plant diseases and insects pests and measured for ordination by adopting the complex structure and function indicator method

which set off 4 ordination for forest ecosystem. Health forests of small scale are the structure of more layer and age

mixed forest

better layer of shrub and grass

better biodiversity and productivity

which are better stability

anti-interfere and vigor . This is a kind of better structure of forest health community which offers the scientific theory of forest health management for Badaling forest center.