| 引用本文: | 王眉樾,张兰珍,翟禄新,等.毛竹与桉树蒸散估算公式修正及对比分析[J].灌溉排水学报,0,():-. |
| Wang Meiyue,Zhang Lanzhen,Zhai Luxin,et al.毛竹与桉树蒸散估算公式修正及对比分析[J].灌溉排水学报,0,():-. |
|
| 摘要: |
| 【目的】通过对比分析毛竹和桉树蒸散量估算公式的差异来探寻不同公式适用性并认识两种植物的水分行为差异。【方法】本研究在以称重法实测盆栽毛竹和桉树的蒸散量的基础上，结合常规气象观测数据，应用线性回归对9个估算公式进行了修正，评定了不同公式的适用性及改进效果，并分析了两种植物的蒸散差异。【结果】结果表明：1.修正前，Jensen-Haise、Hargreaves1975和Doorenbos-Pruitt法估算的毛竹蒸散量精度较高，FAO Penman-Monteith、Hargreaves19785和Jensen-Haise法估算的桉树的蒸散量与实测较接近；修正后的参考蒸散公式能显著改善实际蒸散量的估算精度；2.桉树蒸散量显著大于毛竹的蒸散量，桉树的蒸散量比毛竹的大38%；3.文中9个公式对气象要素的敏感性依次为Turc、Abtew、Makkink、Hargreaves1985、Priestley-Taylor、Doorenbos-Pruitt、Hargreaves1975、Jensen-Haise、FAO Penman-Monteith，其桂北地区的适用性则与此相反；4.桉树的蒸散量对于气象要素的变化比毛竹的蒸散量更加敏感。【结论】修正可有效提高估算公式的精度并可揭示两种植物的蒸散对气象因子的敏感性，研究结果可为区域生态保护、水资源评价、林业规划等提供科学依据。 |
| 关键词: 实际蒸散发；参考蒸散发；适用性；毛竹；桉树 |
| DOI： |
| 分类号:S161.4 |
| 基金项目:国家自然科学“漓江流域上游区气候和植被变化的生态水文响应机制研究”(41261005)、“人工毛竹林根冠关系及其水热传输效应研究”(41867028) |
|
| Modification and Comparative Analysis of Evapotranspiration Estimation Formulas of Bamboo and Eucalyptus |
|
Wang Meiyue1, Zhang Lanzhen1, Zhai Luxin2, Liu Yunyu1, Li Chan1, Ou Xiaohua1, Liao Weiting1, Chi Jinzhe1
|
|
1.Guangxi Normal University;2.Guangxi NormalUniversity
|
| Abstract: |
| 【Objective】Applicability of different formulas used to estimate the evapotranspiration of Bamboo and Eucalyptus were evaluated to understand the difference of the water behavior of two plants. 【Method】Based on the measured evapotranspiration of potted Bamboo and Eucalyptus using weighing method and calculated evapotranspiration with conventional meteorological observation data, 9 estimation formulas were modified by linear regression, the improvement effects of different formulas were evaluated, and the evapotranspiration differences of two plants was analyzed in this study. 【Results】① The accuracy of Bamboo evapotranspiration estimated using the Jensen-Haise, Hargreaves 1975, and Doorenbos-Pruitt methods was relatively high before the modification, and the evapotranspiration of the eucalyptus estimated by the FAO Penman-Monteith, Hargreaves19785, and Jensen-Haise methods was close to the actual measurement; the modified reference evapotranspiration Formulas can significantly improve the estimation accuracy of actual evapotranspiration; ② It was shown that Eucalyptus evapotranspiration is significantly larger up to 38% than that of Bamboo; ③ The sensitivity of 9 formulas to meteorological elements in turn is Turc, Abtew, Makkink, Hargreaves 1985, Priestley-Taylor, Doorenbos and Pruitt, Hargreaves 1975, Jensen-Haise, FAO Penman-Monteith, and its applicability in Northern Guangxi is the opposite order; ④The sensitivity of the water consumption of Eucalyptus to the change of meteorological factors is more than that of Bamboo. 【Conclusion】The accuracy of the estimation formulas can be improved effectively by modification and these modified formulas can be used to reveal the sensitivity of the evapotranspiration of two plants on the meteorological factors. The research results can provide scientific basis for regional ecological protection, water resources evaluation, and forestry planning. |
| Key words: Actual evapotranspiration; Reference evapotranspiration; Applicability; Bamboo; Eucalyptus |
