论文部分内容阅读
基于2005-2006两个不同水文年对羊草、拂子茅、冰草构成的羊草群落生育期生境中气象因子及生理因子野外观测试验数据,用联合国粮农组织FAO-56分册中最新双作物系数法计算分析了羊草群落生育期不同降雨条件的需水量。模拟计算的蒸腾、蒸发量与实际观测值间进行了拟合相关图、拟合优度参数法的有效性检验。用羊草生育期生理特性、冠层结构变化、气象要素和根系层土壤含水率变化对计算结果进行了分析,得出生育期各生长阶段蒸散量和日平均蒸散强度及其它们的变化规律。
Based on the field test data of the meteorological factors and physiological factors in the habitats of Leymus chinensis, Populus simonii and Agropyron chinense in two different hydrological years from 2005 to 2006, using the latest double crop of the UN Food and Agriculture Organization FAO-56 The coefficient method was used to calculate and analyze the water requirement of different rainfall during the growth period of Leymus chinensis community. The correlation between the simulated transpiration and evaporation and the actual observation value is fitted and the validity test of the goodness parameter method is fitted. The results of physiological characteristics, canopy structure changes, meteorological factors and soil moisture content in the root layer during the growth period were analyzed. The results showed that the evapotranspiration and the daily average evapotranspiration in the growth stages were different.