草业科学2012，Vol.29Issue(5)：804-808,5.
东大河林区金露梅种群空间分布格局沿海拔梯度的变化
Change of spatial pattern of Potentilla fruticosa population along altitudinal gradient in Dongdahe forest area of Qilian Mountains Nature Reserve
摘要
Abstract
The basic characteristics, coverage spatial pattern and the change along altitudinal gradient of Potentilla fruticosa population in Dongdahe forest areas of Qilian Mountains Nature Reserve were studied by using the methods of pattern indexes, accumulation intensity indexes and accumulation mean values. The results showed that the average population abundance, the average coverage and average height of Potentilla fruticosa reached their maximum values at an altitude of 2 842, 2 990 and 3 017 m, respectively. The appropriate altitude of P. fruticosa population distribution were about 2 900 -- 3 100 m in the south east slope. The population coverage was an aggregated distribution. With altitude elevating, the pattern index increased gradually and reached the maximum value at 2 990 m, and then fluctuated and declined. The change of accumulation intensity had the same pattern as the pattern index. The main reason for the aggregated distribution of P. fruticosa population was the survival environment of P. fruticosa population.关键词
东大河林区/金露梅种群/空间格局/海拔梯度/格局指数Key words
Dongdahe forestarea/Potentilla fruticosa population/spatial pattern/altitudinal gradient/pattern index分类
农业科技引用本文复制引用
刘建泉,孙建忠..东大河林区金露梅种群空间分布格局沿海拔梯度的变化[J].草业科学,2012,29(5):804-808,5.基金项目
甘肃省星火计划项目 （）
