生态学报2017，Vol.37Issue(21)：7170-7180,11.DOI:10.5846/stxb201608251732
卧龙巴郎山川滇高山栎群落植物生活型海拔梯度特征
Life-form characteristic of plants in Quercus aquifolioides community along an elevational gradient on Balang Mountain, Wolong Nature Reserve
摘要
Abstract
Evergreen oak (Quercus aquifolioides Rehder & E.H.Wilson) forest is a type of subalpine sclerophyllous forest that is widely distributed in the subalpine zone of the Hengduan Mountains in southwestern China.In order to investigate the response of the forest's plant life-form characteristics to climate environment,the adaptability of evergreen oak forest to space,and the possible competition among species,we documented the life-form characteristics of vascular plants from 15 different Q.aquifolioides communities along an elevational gradient from 2200 to 3600 m on Balang Mountain,Wolong Nature Reserve,SW China.The plant life forms of the community were mainly composed of Phanerophytes (36.01％),followed by Chamaephytes (25.92％) and Geocryptophytes (29.36％),and Hemicryptophytes were the least common (0.92％).Phanerophytes played an important role,accounting for 21.74％ to 50％ of all species living on Balang Mountain,although its prevalence gradually decreased with increasing altitude.In contrast,Hemicryptophytes initially increased with increasing altitude but then decreased,and Geocryptophytes increased with altitude.Meanwhile,the proportion of Therophytes fluctuated with increasing altitude,accounting for between 8.94％ and 5.67％ of the species present.In addition,the abundance of the evergreen Phanerophytes plants decreased with increasing altitude,and the richness of evergreen Phanerophyte species was lower than that of deciduous Phanerophytes.At 3300 m,the Macro-and Mesophanerophytes accounted for only 3.09％ and 4.26％ of the species present,respectively,this indicated that life-form characteristics of evergreen oak forest were gradually weakening.Finally,comparative analysis of the plant life-form characteristics of different plant communities indicated that the Q.aquifolioides forest is different from other special types of evergreen broad-leaved forest.关键词
川滇高山栎/高位芽植物/地上芽植物/地面芽植物/地下芽植物/一年生植物/卧龙自然保护区Key words
Quercus aquifolioides/Phanerophytes/Chamaephytes/Hemicryptophytes/Geocryptophytes/Therophytes/Wolong Nature Reserve引用本文复制引用
杨朗生,刘兴良,刘世荣,潘红丽,冯秋红,李迈和..卧龙巴郎山川滇高山栎群落植物生活型海拔梯度特征[J].生态学报,2017,37(21):7170-7180,11.基金项目
国家“十二五”科技支撑计划课题(2012BAD22B0104) （2012BAD22B0104）
森林和湿地生态恢复与保育四川省点实验室开放课题 （）
