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应用地理信息系统和统计学原理,研究中国榛属植物分布规律,评价适生区气候,分析气候因子对其分布的影响,并根据适生气候的相似性,探讨榛属植物种间关系。结果表明:国内榛属植物纬度分布范围在24°31’N~51°42’N,经度分布范围在85°55’E~132°12’E,主要分布区从东北—华北山区、秦岭和甘肃南部及河南—华中—西南呈斜带状分布,分布种数在华中地区达到最多;垂直分布自东至西随经度降低海拔逐渐升高,纬度对各种质分布海拔影响存在显著差异;年均气温和冷温是影响榛属植物分布的关键气候因子;榛属植物分布种数与各气候因子间的回归方程为:Y=11.883-0.051X1+0.131X2-0.003X4-0.004X5-0.001X6+0.051X8,根据分布区气候相似性进行聚类分析,将我国榛属植物分为3类:平榛和毛榛为一类,川榛、华榛、刺榛、绒苞榛和滇榛为一类,维西榛为一类。
Applying geographical information system and statistical principle, we study the distribution rules of plant in China, evaluate the climate in suitable area, analyze the influence of climatic factors on its distribution, and discuss the interspecific relationship of plant according to the similarity of suitable climate. The results showed that the latitudinal distribution of the genus Calybochas from 24 ° 31’N to 51 ° 42’N and the longitude distribution range from 85 ° 55’E to 132 ° 12’E mainly distributed from northeast to north China, South of Gansu and Henan - Central China - Southwest were oblique belt distribution, the distribution of species in Central China to reach the most; vertical distribution from east to west with the longitude of the elevation gradually increased, latitude on the distribution of the quality of the various altitudes were significantly different; The average temperature and cold temperature are the key climatic factors that affect the distribution of the genus Calylan. The regression equation between the distribution number of the genus and the climatic factors is: Y = 11.883-0.051X1 + 0.131X2-0.003X4-0.004X5-0.001X6 + 0.051X8, clustering analysis based on the climate similarity of the distribution area, the hazel plants in China are divided into three categories: flat hazel and hazelnut as a category, hazelnut, Chinese hazel, hazelnut, velvetleaf and yam Class, Vicini hazel a category.