稀有植物云南金钱槭生长群落特征与保护对策

稀有植物云南金钱槭（Dipteronia dyeriana）分布在云南文山老君山，该山在地理位置上处于亚热带南部。但云南金钱槭仅生长在山体的中上部，海拔1800～2200m，生长地因海拔高，具有温凉、湿润的气候特点。云南金钱槭喜光，不适应森林内部环境。老君山云南金钱槭的大多数个体是以单优灌木群落形式存在，少量生长在灌丛中和森林边缘。单优灌木群落是干扰的产物，也由于干扰的延续而存在。分布区森林乔小被砍伐不会导致云南金钱槭消失，原生森林植被完全恢复反而会减少个体数量。对云南金钱槭生存最大的威胁是农地扩大。要维持较高个体数量，适当的干扰是必需的。

Community Characteristics and Conservation Strategies of A Rare Species,Dipteronia dyeriana (Aceraceae)

Rare plant Dipteronia dyeriana distributed on the Laojun Maintain in Wenshang, Yunnan, southwest of China, the mountain is located in south sub-tropics. D. dyeriana was only found at the zone from 1800 m to 2200 m above sea level. The habitat of D. dyeriana was cool and moist. D. dyeriana was a heliophyte and did not grow well under foists. On the Laojun Mountain most of its individuals was in D. dyeriana communities, some was in other shrubberies and a few was on the edge of foist communities. Disturbances played an important role in the formation and existence of the D. dyeriana community. It should not result in extinction of D. dyeriana that other trees were, cut down in its distribution. Recovering of forests should result in decreasing the number of its individuals in the area. Clear-cutting for cultivation would be the most serious threat to D. dyeriana. To remain large population of D. dyeriana disturbances were necessary.