摘要
缀块性(patchiness)是自然界中最为普遍的现象之一,它存在于各种生态学系统的每一时空尺度上。森林、农田、草地、湖泊等生态系统,通常构成景观缀块(landscape patches),每一景观缀块内部又具有大小、持续时间以及内容都不同的各种缀块。在不同时。
With enormously increasing awareness and research emphasis on spatial heterogeneity, the study of patchiness and patch dynamics has become a major theme in both aquatic and terrestrial ecology.Patch dynamics represents not only a field of study,but a new emerging ecological paradigm as well. It represents a view that emphasizes spatial and temporal heterogeneity,non-equilibrium properties, hierarchical structure,and scale-dependence of ecological systems. A great challenge for ecologists is to relate spatial patterns to ecological processes and vice versa. Understanding the mechanisms of patchiness and patch dynamics provides a basis for achieving the above goal. This paper introduces basic concepts in patch dynamics,presents a conceptual framework for causes and mechanisms of patchiness, and develops some general aspects of patch dynamics based on hierarchy theory.
出处
《生态学杂志》
CAS
CSCD
北大核心
1992年第4期41-45,共5页
Chinese Journal of Ecology
关键词
缀块性
缀块动态
生态系统
patch, patchiness, patch dynamics, patch hierarchy, causes, mechanisms.
