重庆国家重点保护野生植物的分布与水热关系的初步研究

Preliminary Study of the Correlations between the Distribution of National Wild Conservative Plants in Chongqing and the Climates

通过对重庆国家重点保护野生植物的分布与水热关系的研究 ,确定了这些植物种分布的水热幅度 ,并利用温暖指数 (WI)、寒冷指数 (CI)和湿润指数 (H I)对这些植物种进行聚合分类 ,结果可将这些植物种分为 5个水热分布类群 : .高温湿润型 , .高中温湿润型 , .中温湿润型 , .低中温湿润型和 .低温湿润型。另外 ,研究还表明了重庆地区的水热条件较好 ,适合这些重点保护野生植物的生长发育 ,因此 ,水热条件的现状不是濒危植物种濒危的主要原因 。

The article studied the relationships between the water temperature factors and natio nal wild conservative plants in Chongqing,and obtained the water temperature range of the distribution of these plant species.According to warmth index,coldness index and moisture index,these national wild conservative plants were analyzed by the CLUSTER classification,the results showed that these plant species could be divided into five types:(1)Megathermal humid type,(2)Mega mesothermal humid type,(3)Mesothermal humid type,(4)Micro mesothermal humid type,(5)Microthermal humid type.Meanwhile,the study implied that water and temperature conditions were fit to the growth of these species in Chongqing,but present conditions of water and temperature are not the main reasons why rare being plants were endangered,human impacts were the major factors responsible for the endangered status of these species.