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内蒙古皇甫川流域油松蒸腾特点分析
引用本文:李国强,杨吉力.内蒙古皇甫川流域油松蒸腾特点分析[J].内蒙古大学学报(自然科学版),2001,32(3):301-305.
作者姓名:李国强  杨吉力
作者单位:内蒙古大学生命科学学院生态与环境科学系,
基金项目:“九五”国家科技攻关项目! ( 96-0 0 4 -0 5-0 1 ),内蒙古自治区教育厅重大项目! ( ZD990 3),教育厅重点研究领域项目
摘    要:本文对皇甫川流域主要乔木油松 ( Pinustabulaeformis) ,从蒸腾强度和土壤含水量两个方面 ,研究了其水分状况 .在研究中发现 :油松蒸腾日进程为双峰曲线 ,有蒸腾午休现象 ,水分状况较差时蒸腾日进程曲线到达波谷的时间比水分状况较好时大大提前 ;干旱条件下 ,蒸腾速率较低 ,一旦水分状况好转 ,仍可有较高的蒸腾速率 .以皇甫川流域目前种植状况 ,砒砂岩立地以 3× 1 m2密度种植油松为最佳选择 .

关 键 词:皇甫川流域  油松  蒸腾强度  土壤含水量  立地  种植密度
文章编号:1000-1638(2001)03-0301-05
修稿时间:2000年12月18

The Exploratory Study of Pinus tabulaeformis Water Regime in Huangfuchuan Watershed in NeiMongol
LI Guo-qiang,YANG Jie.The Exploratory Study of Pinus tabulaeformis Water Regime in Huangfuchuan Watershed in NeiMongol[J].Acta Scientiarum Naturalium Universitatis Neimongol,2001,32(3):301-305.
Authors:LI Guo-qiang  YANG Jie
Abstract:The water regime of Pinus tabulaeformis which is the mainly tree in Huangfuchuan watershed, was discussed from its transpiration and soil water content. Its diurnal change of transpiration is double-peak curve, emerging noon depression, and when the water situation is in worse condition, the time of reaching trough is much earlier than when it is in better condition. Under the arid environment, its rate of transpiration is low. While soil water content is increasing, it is high. In terms of present vegetation condition, it is best that Pinus tabulaeformis is planted in a density of 3×1m2 in Pishayan site.
Keywords:Huangfuchuan  Transpiration  Pinus tabulaeformis  Soil water content  favorable site and density
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