摘要
据水文统计和测量数据,借助G IS技术和统计方法,定量研究快速城市化背景下兰州-西宁区域水环境演化,得出:①区域城市经济建设需水与供水矛盾日趋恶化,得到城市化水平与供水之间呈自然对数关系;②流域内用水以农林牧畜用水为主,甘肃段集中了甘肃省主要的工业用水、城镇公共用水及绿化用水;③依据地表水水域环境功能和保护目标,按功能高低将区域内地表水划分为五类,水质在空间上表现西部水质优于东部区域,山地丘陵区高于黄土沟壑区。最后从不同角度总结影响水环境演化的主要因素。
According to the statistical and measurements in Hydrographic,Using GIS technology and statistical methods,analysis the evolution of hydro-environment in Lanzhou-Xining area.The paper makes conclusion that：①The water relation between supply and demand,as the urban economical constructions,is getting worse,in the other hand,the relation is the natural logarithm between urbanization and water supply;②The basins water is mainly of Agricultural and farm,in the Gansu belt,water supply concentrates on industry、town public、 afforesting and greening;③by means of water Function and water environmental protection goal,surface water fall into five categories,water quality in western part is better than eastern,and the Mountainous and Hilly Area better Loess Hill and Gully Area.Finally,the paper researches the evolution elements in hydro-environment from different angles.
出处
《地下水》
2011年第3期61-63,135,共4页
Ground water
基金
国家自然科学基金(50678149):西北地区主要城镇区域与PREE系统协调发展的机制研究
关键词
水环境
因素
水质
水量
hydro-environment
factors
water quality and water quantity
