灌溉排水学报2012，Vol.31Issue(3)：99-102,138,5.
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
摘要
Abstract
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Key words
forest-grass vegetation/evapotranspiration/water balance/water deficit/analyses of water abundance and deficit分类
农业科技引用本文复制引用
刘增进,柴红敏,李宝萍..豫西黄土丘陵区林草植被蒸散量估算研究[J].灌溉排水学报,2012,31(3):99-102,138,5.基金项目
国家自然科学基金项目 （）
水利部公益性行业科研专项 （）
