ABSTRACT
ABSTRACT: Ecological risk is a new field in risk research. It focuses on natural properties of ecosystems rather than population, buildings and real estate. This is also the main difference between ecological risk and other types of risk. Since 1970s, ecological risk assessment researches have been advanced specifically on spatial scale, multiple risk sources and multiple receptors. This paper evaluated ecological risk induced from flood at a regional scale. The assessment could be divided into 4 parts: 1) construct the index system of environmental vulnerability (V) and evaluate it; 2) examine the distribution of flood occurrence (H) based on related statistical materials; 3) assign value for ecosystem and its ecosystem capital (E); 4) according to the risk assessment conceptual model of R = f(H,E,V), evaluate the flood ecological risk. The result shows that: very high risk area mainly concentrated in the plain between Hai River and Luan Rive, and some scatted at Songhua River Basin and Liao River Basin; low risk area partly distributed in the mountain area, and some is dispersive at the flood plain of Yellow River. Before we find an advanced methodology for ecological risk of natural disasters to multiple receptors, we can apply this method to assess some large scale disasters, even though some concrete interactions are ignored.
