广东省曲江县野生仙湖苏铁新种群及其保护

在广东省曲江县新发现的两个仙湖苏铁种群,是继深圳市塘朗山种群后在广东省发现该物种的新野 生种群。对其种群结构及繁育系统的研究结果表明,曲江县的两个仙湖苏铁种群分布区域极狭窄(仅600 m2),个体数很少,而且由于人为破坏,数量还在减少;年龄结构呈倒金字塔形,开花植株数少,且缺少雄株,种 子不能萌发成幼苗;这些现状表明这两个种群处于严重濒危状态,急需保护。

Characteristics and conservation of wild populations of Cycas fairylakea newly found in Qujiang of Guangdong Province

Two populations of Cycas fairylakea found in Qujiang County of Guangdong Province were the next two wild populations of this species to the Tanglangshan population which had been found in Shenzhen. Investigation on the population structure and breeding system showed that these two populations of C.fairylakea had a narrow colonization area of only 600 m~2,and few wild individuals,which is decreasing continually. The population age structure was opposite pyramid-like. There were few blooming plants,even no male blooming one. The seeds are all sterile. It indicated that these two populations of C.fairylakea were threatened seriously,the plants and habitats were needed to be protected urgently in location site.