The Study On Ecological Regionalization Of Erhai Basin

Population exploding, anthropic disturbing and rapaciously plundering on nature destructed China's ecological environment to an alarming level in past two decades, which means tackling ecological problems in a comprehensive way has been in extremely urgent. The variety of natural conditions and human's developing activities in China requires the ecological remedy to be suited to local situation. Ecological regionalization, which distinguishes the characters of various ecological environments, is the right tool for us to do ecological restoring work.In this article, we try to delve further into some aspects related to ecological regionalization. We summarized the situation and driving force of ecological degeneration, the development and necessity of ecological regionalization, and the concerned theories and principles. According to these works, Landscape Ecology is considered as the principal theory, and RS technology is used as the principal technological method for case study in Erhai Basin.On the basis of these theories and principles, we regionalized Erhai Basin. This work was carried out in two steps.1. Investigation and analysis of present ecological situation in Erhai Basin. In this step, remote sensing data was selected as the primary data source supplemented with related historic materials and field investigation results. Then the type, area, spatial distribution of landscape, and the social situation in Erhai Basin were analyzed by the methodology of landscape ecology.2. Ecological regionalization. According to the results of ecological analysis, human disturbance, landscape spatial distribution, and other natural or social characters were selected as regionalization criteria. Erhai Basin was divided into four regions, including slightly disturbed region, moderately disturbed region, intensely disturbed region and human domain region. Several subregions were plotted out in each region. At the end of this work, restoring strategies were provided for these regions in light of their ecological and social situations.