废弃采石场植被自然恢复初期群落的结构特征

Plant Community Structure at an Early Ecological Restoration Stage On an Abandoned Quarry in Sibao Mount

为了解和掌握植被自然恢复的趋势和规律,于2006年4月和8月2次对淄博市四宝山废弃采石场及其周边荒山荒地植物群落自然恢复的结构特征进行了调查研究.结果表明:植被类型以灌草丛和草丛为主;灌木种类较为单一,共计4科7属7种,草本群落物种组成丰富,共计25科48属55种;荆条Vitex negundo是灌木层的优势种,胡枝子Lespedeza bicolor是其伴生种;各立地类型草本群落优势种差异不大;群落生活型谱反映了寒冷干燥的气候特征;该区域物种多样性总体较低,各立地类型间差别不大;土壤是植被恢复的主要限制因子.

To understand and master the tendencies and principles of natural vegetation restoration is of theoretical and practical significance to the artificial speeding-up of vegetation recovery. The community structures at an early natural recovery stage of vegetation were investigated on an abandoned quarry in Sibao Mount in April and August, 2006. The results indicate that the main types of vegetation in this area are shrub and grassland. The shrub species are rather singular with only 4 families, 7 genera and 7 species but the herb communities are much more abundant with 25 families, 48 genera and 55 species in total. Vitex negundo is the dominant shrub species and Lespedeza bicolor is its companion species. The dominant herbs on each site type are similar to each other. The community life spectrum shows that the climate in this area is very cold and droughty. The species diversity is quite low and has no distinct difference among site types. Soil is the main limiting factor to natural vegetation recovery.