石佛寺人工湿地芦苇群落蒸散发计算与分析

根据联合国粮农组织推荐的Penman-Monteith公式及单作物系数法，以气象数据为基础计算了2009—2012年石佛寺人工湿地芦苇生育期蒸散发量及各月份蒸散发量的多年平均值。采用偏相关分析验证了芦苇蒸散发量的主要影响因子，并确定了各月气象因子存在的线性关系。结果表明，该地区芦苇实际蒸散发量呈逐年递减趋势，多年各月份芦苇实际蒸发量平均值5—9月分别为142.4，149，138.1，120.9，83.1 mm；相关性分析验证了影响芦苇蒸散发量的因子依次是净辐射，平均温度，风速，相对湿度。该文研究了芦苇全生育期的耗水规律，为该地区制定芦苇灌溉及芦苇湿地生态需水提供了依据。

Calculation and Analysis on Evapotranspiration of Phragmites Communis in Constructed Wetland in Shifosi Area

According to the Penman-Monteith formula recommended by FAO and method of single crop coefficient, based on the meteorological data of 2009—2012, evapotranspiration of phragmites communis in full reproductive period in constructed wetlands in Shifosi and the evapotranspiration of average for many years were calculated. The correlation was used to test the development trend of reed evapotranspiration for many years, the linear equation was fixed. The results show that the actual evapotranspiration of reeds showed a decreasing trend year by year, and the actual average monthly evapotranspiration for many years is 142.4 mm in May, 149 mm in June and 138.1 mm in July, 120.9 mm and 83.1 mm in August and September, respectively. Correlation analysis showed that the influence factors of reed evapotranspiration were the average net radiation, temperature, wind speed and relative humidity. The water consumption of reeds in the whole stages was studied in this paper, which can provide the basis for the regional irrigation and wetland ecological water requirement of phragmites communis.