干旱、半干旱地区乔灌木树种耐旱性及林地水分动态研究进展

干旱、半干时地区人工植被恢复生态学伴随着沙漠科学恙发展而不断进步，为国民经济建设和干旱、半干旱地区沙漠化防治而起重要作用，近年来有关树木耐旱性生理，耐旱性评价指标筛选、蒸腾耗水、土壤水分动态、林地水量平衡、人工植被演替等方面研究取得了重大进展，未来乔灌木树种耐旱性及林地水分研究的重点领域是：树木抗旱性生理基础，良种培育、沙地植被恢复生态学、人工林地研究的系统化和人工造楚的模式化等方面。

Research Progress on Trees and Shrub Drought-resistance and Woodland Water Activity in Arid and Semi-arid Region

The recovery of artificial vegetation have been making progress with the establishment and development of desert science in the arid and semi\|arid region. The research has made great contribution to national economy and the control of soil desertification. In recent years, considerable achivements have been made in several research fields such as the trees and shrub physiology of drought\|resistance,selection of the drought\|resistance estimating index, water consumption of transpiration, soil water activity,woodland water balance and the evolution and substitution of artificial vegetation, etc. The key research fields on the trees and shrubs drought\|resistance and woodland water activity in the future are the physiology basis of trees and shrubs drought\|resistance,the selective breeding of the improved varieties, the rehabiliatation ecology of the sandy vegetation, the systematization of the artificial woodland research, and the afforestation modelization, etc.