辽河中下游流域水资源时空演变特征分析  

Analysis of space-time evolution characteristics on water resources of the middle and lower reaches of the Liao River basin

作　　者：殷红[1] 郭瑞[1] 殷萍萍[1] 胡涛[1] 郭范顺 

机构地区：[1]沈阳农业大学农学院,辽宁沈阳110161 [2]瓦房店市祝华街道办事处,山东大连116300

出　　处：《生态环境学报》2010年第2期394-397,共4页Ecology and Environmental Sciences

基　　金：辽宁省教育厅高等学校创新团队科研项目(2009T088)

摘　　要：选择辽河中下游流域为研究对象,通过调查流域内各月及多年年降水量、蒸散量及水分收支基本情况,应用区域蒸散互补关系模型估算辽河流域实际蒸散量,实现各年实际降水量、蒸散量的空间化。从多个层次分析1956—2000、1970—2000年及1980—2000年3个时间序列降水、蒸散量和水分收支的变化趋势及特点。结果表明:20a系列年平均降水量与45a系列比较分析发现,降水量减少的区域占流域面积的23.08%,降水量增加区域占流域面积的76.92%;辽河中下游流域实际蒸散大部分在600～850mm之间,其分布主要呈现由北向南、由西向东逐渐降低的趋势。辽河中下游流域水分收支不平衡,营口—辽阳—铁岭一线地区水分收支相当,此线以西北地区水分收支是负值,占总流域面积的59.73%,这种变化将会使西部干旱地区的旱情进一步增大。此线以东南地区水分收支是正值,占总流域面积的40.37%,当地的湿润程度会进一步增加。This paper explores the middle and lower reaches of the Liao River basin as the research object.The basic information of precipitation,evapotranspiration and water balance in each month and years of the basin was investigated.The model of complementary relationship between the regional evapotranspiration was applied to estimate the actual evapotranspiration of Liao River basin and bring about the spatialization of actual precipitation and evapotranspiration in each year.Trends and characteristics of precipitation,evapotranspiration and water balance during the three time series 1956—2000,1970—2000 and 1980—2000 were analyzed on multiple levels.Evolution of space-time,spatial pattern and characteristics of regional differentiation of water resources in the middle and lower reaches of the Liao River basin was revealed to relieve water crisis in this area,lay the foundation for protecting the ecology and environment and further study and provide scientific basis of sustainable use of water resources in the Liao River basin.

关 键 词：降水量 实际蒸散 变化趋势 辽河中下游流域 

分 类 号：X143[环境科学与工程—环境科学]