人工幼林蒸腾规律的研究  

STUDY ON THE TRANSPIRATION OF YOUNG PLANTATIONS

作　　者：余清珠[1] 王进鑫[1] 高文秀 郭启程 

机构地区：[1]西北林学院 [2]延安地区水保所

出　　处：《陕西林业科技》1992年第4期5-9,共5页Shaanxi Forest Science and Technology

基　　金：本项目属于75-08-01-17专题

摘　　要：对刺槐、紫穗槐、河北杨、白榆、侧柏等新造人工幼林生长期蒸腾的研究表明:蒸强日间均值12～14时最大,0～2时最小,凌晨5～6时渐升。昼间均值顺序是:紫穗槐>刺槐>河北杨>白榆>侧柏。回归建立的五种树种蒸强与环境因子关系的非线性回归方程,相关系数大于0.77,差异极显著。五个方程偏相关系数顺序是:光照强度>气温>风速>相对湿度。蒸腾耗水量月均值顺序是:刺槐>紫穗槐>河北杨>白榆>侧柏。The studies of transPiration on young Plantation as Robinia pseudoacacia,Amorpha fruticosa,Poputus hopeiensis,Ulmus pumila and Platycladus orientalis during their growing season show that:daily variation of transpiration intensity is tend to be maximal during 12 to 14 o'clock, to be minimum during 0 to 2 o'clock,is going to rising uP during 5 to 6 o'clock.The daily order of mean value is:Amorpha fruticosa>Robinia pseudoacacia>Populus hoptiensis>Ulmus pumila>Platycladus orientalis. The correlation coefficients for five nonlinear regression equations to find the relationships of five tree species to enrironmental factors are greater than 0.77.The order of Partial-correlation coefficients for five equations is solaration intensity>temPerature>wind speed>relative humidity.The order of mean value of water comsuPtion monthly is Robinia pseudoacacia>Amorpha frutilosa>Populus hopeiensis>Ulmus pumila>platycladus orientalis.

关 键 词：人工幼林 蒸腾强度 蒸腾耗水量 

分 类 号：S718.512[农业科学—林学]