云南迪庆州红景天属植物种类及分布调查

Species and Distribution of Rhodiola L. in Diqing Prefecture,Yunnan Province

为了掌握迪庆州红景天属植物的种类和分布,了解当地红景天资源的状况,在境内11个区域开展实地野外调查。一共发现了21种野生红景天属植物,其中梅里雪山的红景天种类最多,有11种;红景天的种类在海拔2 900-5 100m范围内随海拔升高呈现先增后减的趋势,在海拔4 200m左右,红景天种类最多。红景天生长和繁衍主要受到温度和水分的限制,温度过高过低及水分条件较差的区域不适宜其生长。

In order to understand the species and distribution and the status of the local resources of Rhodiola L.in Diqing,we carried out the on-site field investigation at11survey areas.It was found that there were a total number of21kinds of Rhodiola L.,and the Meri Snow Mountain had11species.At an altitude of2900m to5100m range,the number of Rhodiola L.species showed a trend of increasing at first then decreasing with altitude increase.Most species of Rhodiola L.living at an altitude of around4200m.Growth and reproduction of Rhodiola L.was limited by temperature and moisture,and the area where temperature was too high or too low with low moisture conditions is not suitable for their growth.