| 摘要: |
| 根据洱海流域1998、2004-2006年入湖、出湖水量监测成果,通过实测流量、降水量、蒸发量对入湖、出湖水量进行对比计算,结果发现,应用水文巡测方法与水量平衡方法计算出的2004-2006年洱海水资源量绝对误差最大值为0.2427×108m3,相对误差为4.8%,<5%,说明两种方均可行.分析水量平衡方法的误差来源是枯期受湖面蒸发和农业提水灌溉的影响,提高洱海水资源量计算精度所需解决的问题是提高湖面蒸发量观测精度和还原水量计算精度.分析水文巡测方法的误差来源主要是巡测的监测断面距入湖口有一定距离,主要以面积比拟与降水修正进行计算,以及点据数量较少.针对两种方法的优缺点,提出四种措施:加强环洱海水量监测能力建设;加强洱海水面蒸发观测手段和方法;加强环湖生产生活用水的监督性监测;加强入湖河流水质水量并重监测与分析,以期更好地为洱海水环境、水资源保护和出入湖水量预测分析提供更准确的科学技术支撑. |
| 关键词: 洱海流域 水文巡测方法 水量平衡计算 入湖水量 |
| DOI：10.18307/2010.0421 |
| 分类号: |
| 基金项目: |
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| An comparative analysis of the water resource amount of Lake Erhai based on hydrometric gauging method and water balance calculation |
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LI Dongmei
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Dali Branch, Bureau of Hydrology and Water Resources Survey of Yunnan Province, Dali 671000, P. R. China
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| Abstract: |
| According to the monitoring data of inflowing and outflowing of Lake Erhai Basin in 1998,2004-2006,through measured flow,precipitation and evaporation,we calculate and analyze the error sources of inflowing and outflowing water,and propose the problem required to solve for the increasing calculation accuracy of water amount of Lake Erhai,thus provide a more accurate and scientific technology support for water environment, water resources protection and predictive analysis on the amount of inflowing and outflowing water of Lake Erhai. |
| Key words: Lake Erhai Basin hydrometric gauging method water balance calculation intlowing water |
