蒲草群落蒸散耗水规律及影响因子研究  

Study on Water Consumption Characteristics of Shifosi Constructed Wetland Cattail Community Evapotranspiration

作　　者：周林飞[1] 高宇龙[1] 张静[1] 

机构地区：[1]沈阳农业大学水利学院,沈阳110866

出　　处：《灌溉排水学报》2016年第2期90-94,共5页Journal of Irrigation and Drainage

基　　金：辽宁省水利科技指导性计划项目(2011137-12);高等学校博士学科点专项基金项目(20112103120003)

摘　　要：利用Penman-Monteith模型及单作物系数法计算了2013年石佛寺人工湿地蒲草全生育期的逐日实际蒸散量,对比分析了各时期的自由水面蒸发量,并采用偏相关法分析了影响蒲草群落实际蒸散量及水面蒸发量的气象因子。结果表明,蒲草全生育期单位面积的累积蒸散量为607.96mm,整体呈先升高后下降趋势,其中稳定期蒸散强度最大达到4.52mm/d,是生态需水的关键时期,相应全生育阶段的水面蒸发量为560.11mm,蒸散系数达到1.09,说明蒲草的存在能够增加湿地水分的扩散;蒸腾和蒸发受各生育阶段气象因子的影响程度不同,主要受太阳辐射和风速的影响。Penman-Monteith model and single crop coefficient method were used to calculate the wetland cattail whole growth period daily actual evapotranspiration in Shifosi,the free water surface evaporation of each period and the impact of community cattail actual evapotranspiration and surface evaporation of meteorological factors were analyzed using partial correlation method.The results showed that the cumulative growth period evapotranspiration of cattail unit area was 607.96 mm,the overall downward trend of evapotranspiration were first increased and then decreased,and its maximum intensity of stabilize evapotranspiration reached 4.52mm/d,which was a critical period of ecological water demand,the corresponding full stages in the water evaporation was 560.11 mm,and evapotranspiration coefficient was 1.09,indicating that the presence cattail increased the diffusion of water wetlands;transpiration and evaporation were affected by different growth stages of meteorological factors in different degrees,mainly the solar radiation and the wind speed.

关 键 词：蒲草群落 Penman-Monteith模型 实际蒸散量 对比分析 

分 类 号：S161.4[农业科学—农业气象学]