生态阈值研究进展及其应用

Research Development and Application in Ecological Threshold

生态阈值普遍存在于各个生态系统中,主要指的是生态系统在几个状态下突然转变的点或者区域。在生态系统的可持续性发展中,生态阈值研究起着重要作用,其研究已经在森林、湖泊、牧场等系统广泛开展。由于生态系统的复杂性,各个因子交互耦合,导致了生态阈值界定的复杂性和不确定性,因此在未来的研究和应用中应加强生态系统中各个因子阈值的系统性和数量化研究,进一步提高生态阈值在实际生产中的应用水平。

Ecological thresholds are ubiquitous in natural ecosystems. An ecological threshold refers to a point or zone in the relationship between two or more ecological variables at which relatively abrupt change occurs from one ecological condition to another in an ecosystem. Research on ecological thresholds has important theoretical and practical meanings for natural resources conservation and sustainable ecosystem management,which have been the highlights in ecology and related areas. A lot of research on ecological threshold has been carried out in forest,grassland,lake ecosystems. Because of the complexity of the interaction of ecological factors,more synthetic and quantitative study is needed to improve the ability of applying knowledge of ecological thresholds in ecosystem management.