Ecological significance,characteristics and types of disturbance

Disturbance,as a widespread natural phenomenon,is considered as a discrete event occurred in natural ecosystems at various spatial and temporal scales.The occurrence of disturbance directly influence the structure,function and dynamics of ecosystem.The following characteristics are considered as the common nature of disturbance:①Ecological impacts of disturbance is relative for different ecosystems;②The impacts of disturbance is changeable at different spatial scales;③Disturbance can regulate the ecological processes and functions of ecosystem;④Disturbance is always a disorder phenomenon for the normal ecosystem processes;⑤Disturbance is a widespread in various spatial scales and temporal scales.The most important result of disturbance is the change of ecosystem structures and regulation of resource patches in the landscape.Many results show that disturbance is sometimes helpful for increasing bio diversity and conservation.It is significant to study the nature,types,ecological effects,certain size disturbance and relationship with human activities.