荒漠植物根系吸水的数学模型

关于土壤 -植物 -大气连续统 ( SPAC)的研究是当前热点之一 ,研究该连续统 ,土壤水分是联结纽带。土壤水分通过植物根系和土面蒸发进入大气从而使三者成为一连续统。植物根系吸水是把土壤中水分输送入大气的关键形式 ,搞清植物吸水模式将为认识 SPAC奠定基础。目前研究植物根系吸水模式的文章很多 ,按其研究对象来说 ,主要是农作物研究 ;按研究区域来说 ,主要为降水条件充足的区域。目前研究干旱荒漠区天然植物的根系吸水模式还没有 ,本文就此研究了中国干旱内陆荒漠区的多年生小灌木 (以苦豆子 ( Sophora alopecuroides)为例 )的根系吸水模式

Mathematical model of water absorption of eremophyte root system

The study on soil-plant atmosphere continuum(SPAC)is one of major ongoing research projects today. Soil water is the link of the continuum, which makes soil system, plant system and atmosphere system become a continuum by water absorption of root system and water evaporation of soil surface. Water absorption of plant root system is a key way to transport soil water into atmosphere.So to understand the patterns of water absorption of plant root system is the base to recognize SPAC. Recently there are many papers on studies of patterns of plant root's water absorption, and more researched plants are crops and the main researched areas are regions of rich precipitation. There is still no studies on water absorption of natural plant in arid desert regions, so the author studied the patterns of roots water absorption of perennial shrub(e.g.Sophora alopecuroides Tree) in arid desert regions and set up the corresponding mathematical model.