豫西黄土丘陵区林草植被蒸散量估算研究  

Estimation of Evapotranspiration of Forest-Grass Vegetation on Loess Hilly Area in Yuxi

作　　者：刘增进[1] 柴红敏[1] 李宝萍[1] 

机构地区：[1]华北水利水电学院,郑州450011

出　　处：《灌溉排水学报》2012年第3期99-102,138,共5页Journal of Irrigation and Drainage

基　　金：国家自然科学基金项目(50849047);水利部公益性行业科研专项(200801015)

摘　　要：采用积温法、Penman公式法和水量平衡法分别估算了三门峡、洛阳、郑州、济源4地市的植被蒸散量,采用蒸散比系数K值法计算了乔木林、灌木林和草类植被的设计蒸散量。结果表明,估算结果与乔木林、灌木林和草类植被生长对水分的需求有较显著的一致性和较好的适用性。通过植被耗水与降水的盈亏分析,给出了4地市不同植被类型的水分亏缺量,多年月平均降水量基本满足灌木林和草类植被耗水需求,多年年平均降水量基本满足乔木林耗水需求,但上半年(1—6月)表现为缺水,对乔木林的生长发育有较大的影响。The vegetation evapotranspiration of Sanmenxia city,Luoyang city,Zhengzhou city and Jiyuan city were respectively calculated by cumulative temperature method,Penman method and water balance method,and the design evapotranspiration for high-forest,shrub forest and grass vegetation were respectively calculated by K value-evapotranspiration ratio coefficient method（Sanmenxia city： 0.5;Luoyang city and Zhengzhou city： 0.55;Jiyuan city： 0.6）.The results showed obvious consistency and good applicability between estimation and water demand of high-forest,shrub forest and grass vegetation growth.And the breakeven analysis for vegetation water consumption and precipitation presented the water deficit values for different vegetation in the four cities.The annual monthly average rainfall could meet the water demand for shrub forest and grass vegetation growth generally;and the mean annual precipitation could meet the water demand for high-forest growth generally,but the water deficit existed during January to June,which could affect the growth and development of high-forest considerably.

关 键 词：林草植被 蒸散量 水量平衡 水分亏缺 盈亏分析 

分 类 号：P333.1[天文地球—水文科学]