Autecology and conservation status of Magnolia sargentiana Rehder & Wilson(Magnoliaceae) in the Dafengding region,southern Sichuan Province,China  

作　　者：Jing WANG Ya TANG Zheng-Hua XIE Mian-Yue ZHANG 

机构地区：[1]Laboratory for Biodiversity and Environmental Studies, Department of Environmental Sciences, Sichuan University, Chengdu 610065, China [2]Administrative Division of Mamize Provincial Nature Reserve, Leibo, Siehuan 616550, China

出　　处：《Journal of Systematics and Evolution》2009年第6期525-534,共10页植物分类学报（英文版）

基　　金：funded by the Foundation Franklinia of Belgium and the 111 Project of China(no.B08037).

摘　　要：This paper reports the first population ecology study of the endangered Magnolia sargentiana Rehder ＆ Wilson （Magnoliaceae）. Magnolia sargentiana is a protected species in China, but little is known about its present status in the field. In 2007 and 2008, we surveyed the population and conservation status ofM. sargentiana in the Provincial Mamize Nature Reserve and the National Meigu Dafengding Nature Reserve, Sichuan Province, southwestern China. Natural regeneration is poor because of unfavorable environmental conditions and anthropogenic disturbances. Flower buds and bark ofM. sargentiana are used in traditional Chinese medicine and their collection by local people over the period 1983-1994 has led to marked population declines. The collection of flower buds and bark is now banned, but hewing branches for firewood and grazing continues to have a negative impact on the recovery of M. sargentiana populations. To protect the species, we require a ban on hewing branches, closure of primary forests to reduce the impact of humans and ungulates, better education of local people, and increased awareness of wildlife conservation.This paper reports the first population ecology study of the endangered Magnolia sargentiana Rehder ＆ Wilson （Magnoliaceae）. Magnolia sargentiana is a protected species in China, but little is known about its present status in the field. In 2007 and 2008, we surveyed the population and conservation status ofM. sargentiana in the Provincial Mamize Nature Reserve and the National Meigu Dafengding Nature Reserve, Sichuan Province, southwestern China. Natural regeneration is poor because of unfavorable environmental conditions and anthropogenic disturbances. Flower buds and bark ofM. sargentiana are used in traditional Chinese medicine and their collection by local people over the period 1983-1994 has led to marked population declines. The collection of flower buds and bark is now banned, but hewing branches for firewood and grazing continues to have a negative impact on the recovery of M. sargentiana populations. To protect the species, we require a ban on hewing branches, closure of primary forests to reduce the impact of humans and ungulates, better education of local people, and increased awareness of wildlife conservation.

关 键 词：Magnolia sargentiana medicinal plant plant conservation vulnerable species. 

分 类 号：Q14[生物学—生态学] TS974.3[生物学—普通生物学]