云南高原山地生态环境现状初步评价

 针对云南高原山地生态环境区域特点,在地理信息系统与遥感图像处理系统等技术支持下,选取突出反映云南生态环境本底状况的地形地貌、地表植被覆盖、水热条件作为专题对象,基于区域内数字高程模型、遥感数字影像,以及多年平均降雨、气温等多源数据,经处理提取5个特征因子作为评价指标,采用综合模型完成了对云南区域生态环境本底状况的评估、分级,结果以定位、定量数值方式较全面地反映了云南山地生态环境本底状况及区域空间分布特点.初步分析结果表明,云南省生态环境本底状况评估数值分布广,高质量与低质量生态环境水平的数量分布不多,但中等偏上水平(E>600)的空间分布比例较大(76%),因此,对于该山地区域,只要加强生态环境的建设与管理,资源环境可持续发展的潜力是巨大的.

Assessment on eco-environment background of Yunnan plateau mountain region

In Yunnan province,it is important to assessment and recognize eco-environment background since its special physical geographic condition of mountain plateau.The data investigation and collection,multi-subject spatial databases were got by the ways which included NDVI,slope,precipitation,temperature and altitude.By using GIS and image processing technique,the eco-environment background condition was appraised based on the synthetical model.The integrated assessment index was used to analysis the general characteristics and the regional difference.The primary results showed that:The eco-environment background condition of Yunnan province was better in general since the index mainly concentrated the high level relatively.The spatial distribution of eco-environment background condition represented the regional difference from north to south.In general,the most best eco-environment background condition in Yunnan plateau mountain region was distributed in south and southwest,the relative worse ecological environment background condition was distributed in north and northeast,the other vast area belong to middle level grade.