Timing of Drought : Effects on Water Relations of Himalayan Tree Species, Award in Indian Currency

小行星9404043 描述：该项目支持俄勒冈州州立大学科瓦利斯分校的唐纳德·佐贝尔博士和S.印度奈尼塔尔Kumaun大学的P. Singh合作开展一个项目，研究喜马拉雅树种在各种条件下的水分胁迫。 这项研究有三个目标：确定在印度喜马拉雅山脉中部的Kumaun森林类型的水分胁迫程度和季节性模式的差异程度;确定Kumaun森林树木适应干旱的机制;通过提供很少研究的气候中森林的数据，提高对森林树木生理生态中水分关系的一般认识，并通过在不同气候下工作的科学家之间的信息交流。 将测量上午水分胁迫的程度，在整个范围内的森林类型从海拔1000-2200米，和组成部分的水势和气孔开放的程度，在叶发育在雨季开始之前，成熟的叶子在雨季，成熟的叶子在旱季在秋季和冬季。 适用范围：该项目补充了世界其他地区正在进行的关于不同气候的研究，并提供了关于夏季潮湿、冬季干燥气候的温带地区的信息，这对于消除适应水供应模式中的区域偏见是必要的。 这项工作涉及美国和印度科学家的密切合作和分工。 它符合这种合作的目标。 ***

9404043 Singh Description: This project supports travel and field expenses for Dr. Donald Zobel of Oregon State University, Corvallis, OR and Dr. S. P. Singh of Kumaun University, Nainital, India, to collaborate in a project to study the moisture stress in Himalayan tree species under various conditions. The study has three goals: to determine the degree to which forest types in Kumaun, in the Indian central Himalaya are differentiated by their degree and seasonal pattern of moisture stress; to determine mechanism of adaptation to drought by forest trees in Kumaun forests, and; to improve general understanding of the place of water relations in physiological ecology of forest trees, by providing data from forests in a climate seldom studied, and through exchange of information among scientists working in different climates. Measurements will be made of the degree of morning moisture stress across a range of forest types from 1000-2200 m elevation, and of the components of water potential and the degree of stomatal opening, during leaf development before the wet season begins, for mature leaves during the wet season, and for mature leaves during the dry season in fall and winter. Scope: This project complements research being made in other parts in the world on different climates, and provides information, not available, for temperate areas with a wet- summer, dry winter climate, and is necessary to eliminate the regional bias in models of adaptation to water availability. The work involves close collaboration, and division of work by the U.S. and the Indian scientists. It meets the objectives of this collaboration. ***