芦苇蒸散发的气候学计算与分析

Climatology Calculation and Analysis of Reed Evaporation

根据联合国粮农组织推荐的Penman-Monteith公式及单作物系数法,计算了2012年沈阳农业大学水利学院实验场内芦苇生育稳定期7、8月的蒸散发量,并应用偏相关性分析验证了影响芦苇蒸散发量的主要影响因子。结果表明,7月份潜在蒸散量为95.9mm,8月为82.3mm。实际蒸散发量7月为111.3mm,8月为95.5mm。芦苇实际蒸散发量与气象因子的影响在7、8月份有不同。芦苇蒸散发与自由水面蒸发比值均大于1,说明有芦苇生长的湿地明显增加了水分的损失。植物生育稳定期为植物生长需水的关键期,该研究可为芦苇灌溉及芦苇湿地生态需水提供依据。

Eased on the method of single crop coefficient and the Penman-Monteith formula recommended by FAO, the reed evapotranspiration in July and August, which covered the fertility steady phase, was calculated in the Proving Ground of College of Water Conservancy, Shenyang Agricultural University. The partial correlation analysis was applied to verify the main factors affecting e- vapotranspiration on reed. The results show that, potential evapotranspiration was 95.9 mm in July and 82. 3 mm in August. The actual evapotranspiration was 111.3 mm in July and 95.5ram in August. The actual evaporation amount of reed and the effect of meteorological factors is different in July and August. The fact that the evaporation effect coefficient of reeds is greater than 1 proves that water loss of wetlands, in which reed exits, increases significantly. The plant fertility steady phase is the key phase for water requirement. The study result can provide the basis for the irrigation and ecological water requirement of reeds.