干扰生态理论的基本概念和扰动生态学理论框架

Fundamental Concepts of Disturbance Ecological thoery and Framwork of Disturbance Ecology

干扰是群落外部不连续存在、间断发生因子的突然作用或连续存在因子的超“正常”范围波动．这种作用或波动能引起有机体或种群或群落发生全部或部分明显变化，使生态系统的结构和功能发生位移．扰动生态学＝生物＋干扰因子，即研究干扰与生物关系的生态学分支学科．

Ecological distllrbance is defined as abrupt effects of external factors to reasraching system which occur intermittently or exist continuously but fluctuate abnormally, the effects usually bringing about changes in individual organisms, populations, orcommunities, eventually resulting in displacement of the structure and function of the ecosystems. Disturbance ecology=organisms+disturbance factors, that is, a branch ofecology concerns the relationship between disturbance factors and organisms.There are three side significance for reseaching disturbance factor at least. Becausethe ecosystem never exist in regime of sun shing and wind quite and the ecosystem haveabilities to self-recovery and self-cure, so reseaching the disturbance could understandexistance and evolution of the ecosystem better. BecaUse many disturbance factors havecatalogary to be handed, so we can used it as a tool to manage and modificate the'ecosystem. Because many disturbance factors have catalogary of economics diaster, so reseaching distu.ba.ce factors and understanding it's nature role and occurence behave couldservce for protecting diaster and decreasing diaster.