In order to provide further insight to the response of plant to climate changes,the effects of elevated atmospheric CO_2 concentration,increased temperature and their interactions on root system structure of Betula albo-sinensis seedlings were researched with artificial enclosed-top chamber system.

This paper analyzes the developing trend of the root water uptake model,and points out that we should pay attention to the future research on the root mechanism and root structure,and modify and improve the existing root water uptake models for the purpose of making it become the theoretical base of various agricultural activities.

The root structure is an important factor to affect the plant s life.

The mutant displays the following interesting phenotypes: (1) improved drought tolerance as well as enhanced tolerance to salt and oxidative stresses; (2) altered root architecture with deeper roots, more lateral roots, and increased root biomass, and (3) reduced stomatal density, which are all important agronomic traits sought for improving drought tole.

Responses of nitrogen and water on root architecture were investigated by layered digging.

The parameters of root architecture,total root length,surface area,volume,tips,branching angle and fractal dimension etc,were analyzed in young seedlings of Malus hupehensis(Pamp)Rehd.

Full-field geometry model analysis and system development of non-contact 3D measurement;