黄土高原地区植被与气候的关系

利用地理信息系统技术结合典范对应分析和数量区划的方法。研究了黄土高原地区植被与气候之间的关系。排序结果表明：CCA的第一轴代表黄土高原植被和气候梯度的纬向变化，水分梯度是决定植被分布的最主要气候因子，热量梯度中的全年月平均最低气温、月平均最高气温、年均温也对植被的纬向性分布有较大的影响，黄土高原植被与气候梯度表现出明显的纬向性；CCA的第二轴代表黄土高原植被和气候梯度的经向性变化，热量梯度是决定植被经向性分布的最主要气候因子，水分梯度中的全年最大蒸散量对植被的经向性分布有较大的影响。黄土高原植被与气候梯度表现出明显的经向分布规律性。

Analysis of relationships between vegetation and climate variables in Loess Plateau

Many ecological methods are available in micro-scale studies, however, the studies in Loess Plateau use landscape scale. Quantitative ecological method is a group technique of multivariate analyses and becomes more and more important in vegetation studies. Geographical Information System(GIS) can not only store and manage spatial data, but also provide easy ways of spatial analyses, which may meet the demands of ecological researches in landscape scale with a lot of spatial data. A new technique combining G...