摘要
生物多样性保护优先区域代表了生物多样性富集区、典型生态系统与关键物种分布区,对于生物多样性保护具有重要意义,但优先区域内自然保护地覆盖率通常较低,存在很大的保护空缺。苔藓植物作为生物多样性的一个重要组成部分,在生态系统中发挥着重要作用,但由于个体细小、分类鉴定困难等,使得其多样性保护成为整个生物多样性保护中较为薄弱的一环。为了了解我国生物多样性保护优先区域苔藓植物多样性及受保护情况,本文以黄山-怀玉山生物多样性保护优先区域内的石台县和青阳县为例,通过系统的样线法调查优先区域内自然保护地内、外的苔藓植物多样性,比较了其物种组成特点及相似性。结果表明,该区域共有苔藓植物64科140属344种,包括苔类植物27科40属106种、藓类植物37科100属238种,其中有5种为濒危物种。自然保护地内有60科120属270种,保护地外有46科90属185种,保护地内、外苔藓植物科、属、种的Jaccard相似性系数分别为0.66、0.50和0.32,表明自然保护地内、外物种组成差异很大。与石台县和青阳县苔藓植物历史数据相比,本研究新增苔藓植物14科64属273种,其中包括安徽省新记录2科9属96种,而且有18种仅分布于自然保护地外。根据对该区域物种累积曲线及外推估计分析,当采集足够充分时,基于标本数的物种多样性预测值为485种,基于样线数的预测值为563种,说明石台县和青阳县的苔藓植物多样性仍存在被低估的可能。本研究结果一方面表明了自然保护地之外的苔藓植物在保护中有重要价值,另一方面也反映了苔藓植物的野外就地保护存在空缺。建议在我国其他生物多样性保护优先区域开展类似的调查和研究,以期为今后对苔藓植物的分布规律及保护研究提供翔实的基础数据。
Aims:Biodiversity conservation priority areas represent the richest biodiverse regions,typical ecosystems,distribution areas of key species,and are of great significance for biodiversity conservation.However,the coverage of nature protected areas in biodiversity priority areas is often relatively low,and there are large gaps in protection.Bryophytes play an important role in the ecosystem.However,due to the small size of individuals and difficulties in identification,the protection of bryophyte diversity is relatively weak.To understand bryophyte diversity and protection status of biodiversity conservation priority areas in China,we carried out studies on the diversity of bryophytes in Shitai County and Qingyang County,which are located in Huangshan-Huaiyushan biodiversity protection priority area.Methods:Based on the systematic line transect method,the composition characteristics and similarity of bryophytes inside and outside the nature protected areas in the priority areas were inventoried and compared.Results:In total,344 species(in 140 genera and 64 families)were recorded in the area.Of these,106 species(in 40 genera of 27 families)were liverworts and 238 species(in 100 genera of 37 families)were mosses,including 5 endangered species.Among them,270 species belonging to 120 genera and 60 families distributed inside the nature protected areas and 185 species belonging to 90 genera and 46 families distributed outside the nature protected areas.The Jaccard similarity coefficients between the nature protected areas and unprotected areas were 0.66,0.50 and 0.32 at the family,genus and species levels,respectively,indicating that the composition of species inside and outside the nature protected area is very different.Compared with the historical data of bryophytes of Shitai County and Qingyang County,273 species,64 genera and 14 families were newly recorded in this study.Among them,96 species,9 genera and 2 families were newly added in Anhui Province.Of these,18 species only distributed outside the nature protected areas.Based on the species accumulation curve and extrapolation estimation,when the number of individuals collected was sufficient,the predicted value of species diversity based on the number of specimens is 485,and the predicted value based on the number of line transects was 563,indicating that the bryophyte diversity in the area may be underestimated.Conclusion:The results of this study on the one hand highlight the important value of bryophyte protection outside the nature protected areas.On the other hand,it also reflects that it is insufficient in the protection in situ of bryophytes.We suggested to carry out similar surveys and studies in other priority areas of biodiversity conservation of China,to provide detailed and reliable data for future study on the distribution and conservation of bryophytes.
作者
邢诗晨
唐录艳
戴尊
涂淑雯
陈星
张建行
李宏庆
彭涛
王健
Shichen Xing;Luyan Tang;Zun Dai;Shuwen Tu;Xing Chen;Jianhang Zhang;Hongqing Li;Tao Peng;Jian Wang(School of Life Sciences,East China Normal University,Shanghai 200241;School of Life Sciences,Guizhou Normal University,Guiyang 550025)
出处
《生物多样性》
CAS
CSCD
北大核心
2022年第1期112-119,共8页
Biodiversity Science
基金
国家自然科学基金(31770371,32070228)
生态环保部生物多样性调查、观察与评估项目(2019–2023)。
关键词
苔藓植物
物种多样性
采样方法
样线调查
自然保护区
bryophytes
species diversity
sampling method
line transect survey
nature reserve
