基于SOTER的福建陆地生态系统酸沉降相对敏感性评价

Assessment of the Relative Sensitivity of Ecosystem to Acid Deposition in Fujian Province

在福建省SOTER数据库及GIS支持下,选取福建省岩性图、土壤图和土地利用图,同时运用气候要素资源小网格推算方法对福建省多年平均年降水量进行插值生成年均降水量图,将各图层量化后按权重叠加并进行重分类,生成福建省陆地生态系统对酸沉降的相对敏感性等级图.结果表明:"敏感"和"中等"占了全省的绝大部分地区,生态系统对酸沉降的缓冲能力较低.

Supported by SOTER and GIS, the thematica maps were selected as the data source of lithology, soil and landuse from the Fujian SOTER database, and the yearly mean precipitation data were interpolated using the Smallnet-method to make the yearly mean precipitation layers. All prepared layers were quantified and reclassified by weight to derive the relative sensityvity of ecosystem to acid depositon. The results indicated that the the most sensitive area account for most of the total areas in the region and the buffering ability of the ecosystem is rather low.