基于IRS-P6 AWIFS遥感影像和GIS的湖北省生态环境评价

Eco-environmental Synthetic Analysis for Hubei Province Based on IRS-P6 AWIFS Data and GIS Technology

以IRS-P6 AWIFS遥感影像为主要数据源,利用监督分类方法进行土地利用/覆被分类,在GIS技术支持下,通过空间分析提取出生物丰度指数、植被覆盖指数、水网密度指数、土地退化指数、环境质量指数等评价信息。依据国家环境监测总站2006年颁布的《生态环境状况评价技术规范》(HJ/192-2006)建立生态环境质量评价模型,通过模型的空间叠加进行湖北省生态环境状况评价。结果表明湖北省各地市生态环境状况总体较好,这与湖北各地的自然条件、气候条件、资源开发与利用等因素具有较好的相关性,表明评价模型是科学客观的。本文探索了IRS-P6 AWIFS数据和GIS技术相结合的生态环境状况评价方法,对区域生态环境的保护和改善具有积极意义。

Using the IRS - P6 AWIFS remote sensing image as the main data sources, classification of land use/land cover by supervised method, extraction of the indexes of biological abundance, vegetation cover, water density, land degradation, environmental quality by using spatial analysis functions in GIS and other relevant information were used to evaluate the ecological environment of Hubei Province by estab- lishing an ecological and environmental situation index （ E1 ） model indicators. According to the ＂ Technical Criterion for Eco-environment Status Evaluation＂ （ HJ/192 -2006）. We build eco-environmental quality evaluation model. The results showed that the overall situation of Hubei Province, a better ecological environment, which is around the natural conditions in Hubei Province, climatic conditions, resource de- velopment and better use of factors such as the relevance of that model evaluation is a scientific objective. This article explores the IRS - P6 AWIFS data and GIS technology to combine the ecological environment evaluation method positive implications on the protection and improve- ment of the regional ecological environment.