“隔个坡、差不多”。丘陵山地因受坡向的影响,往往一坡之隔,其光、热、水等气候生态因子差异明显,因而构成了二种截然不同的生态环境——阴阳坡生境,这两种生境的差异直接影响森林植物的分布,生长发育、产量和品质。我国是一个多山的国家,丘陵山地面积占 “Every other slope, almost”. Due to the influence of slope direction, the hilly and mountainous regions are often separated by a slope, and the differences of climate and ecological factors such as light, heat and water are obvious, thus forming two completely different ecological environments - the habitat of the yin-yang slope, the difference of the two habitats Directly affect the distribution of forest plants, growth and development, yield and quality. Our country is a mountainous country with a hilly mountainous area