生态与农村环境学报2011，Vol.27Issue(4)：56-61,6.
黄土丘陵沟壑区典型植物耐旱生理及抗旱性评价
Drought-Tolerance Physiology and Drought-Tolerance of Plants Typical of Hilly-Gullied Area of Loess Plateau.
摘要
Abstract
As the loess hilly region is very dry and has a fragile ecosystem, it is essential to screen out suitable drought-tolerant plants for restoring the deteriorating eco-environment. Five plants, korshinsk peashrub, arborvitae, Chinese pine, Siberian apricot and Amygdalus tangutica, common in the region were selected and 4 drought-tolerance indices and 2 drought-resistance indexes of the plants obtained. For analysis of the data, the fuzzy membership function method and the grey correlation analysis method were applied to evaluate their drought-tolerance and drought-resistance and effectiveness of the indices as indicator. Results show that the responses of the plants to drought varied sharply with species and physiological index. However, sequencing based on a single physiological index of the plants in terms of drought-resistance would never get a consistent outcome, indicating that a single index is not adequate to describe any plant in drought-resistance. The comprehensive evaluation of the five species shows an order of korshinsk peashrub > arborvitae > Chinese pine > siberi-an apricot > Amygdalus tangutica in terms of drought-resistance. Drought-tolerance indicators, like chlorophyll content, ratio between bound water and free water content, free proline content and glutathione content are closely related to drought-resistance membership degree ( > 0. 60) , so they can be accepted as indicators and among them, proline is the most effective.关键词
耐旱植物/生理指标/抗旱性评价/半干旱/黄土丘陵沟壑区Key words
drought-tolerance plant/ physiological index of drought-tolerance/ drought-tolerant evaluation/ semiarid area/ hilly-gullied area of Loess Plateau分类
资源环境引用本文复制引用
王移,卫伟,杨兴中,陈利顶,杨磊..黄土丘陵沟壑区典型植物耐旱生理及抗旱性评价[J].生态与农村环境学报,2011,27(4):56-61,6.基金项目
国家自然科学基金(40801041,40925003) （40801041,40925003）
国家科技支撑计划(2006BAC01A06) （2006BAC01A06）
