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贵州省面积约 2 /3以上分布着碳酸盐类岩层 ,广泛发育着各种类型的岩溶地貌 ,由于地下岩溶管道发育 ,从而形成了我省较为特殊的岩溶山区地表水资源的分布和变化规律。通过对地表水资源的年降水量、年径流量、年陆地蒸发量以及泥沙量、水质等主要特征值的统计分析与评价 ,阐述它们明显的地区差异、变化范围、时空变化及地表水质的污染情况等主要特征。
There are carbonate rock formations above 2/3 in Guizhou Province, and various types of karst landforms are widely developed. Due to the development of underground karst pipelines, the distribution and variation of surface water resources in the special karst mountainous areas in our province have been formed. Through the statistical analysis and evaluation of annual precipitation, annual runoff, annual land evaporation, sediment yield and water quality of surface water resources, the paper expounds their obvious regional differences, scope of change, spatio-temporal changes and surface water quality Pollution and other major features.