浙江省丹霞地貌岩生灌木种群的生态位研究  

Study on Ecological Niche of Rocky Shrub Population in Danxia Landform,Zhejiang Province

作　　者：李传磊 LI Chuanlei(Wuxi Open University,Jiangsu Wuxi 214011;School of landscape architecture and Architecture,Zhejiang A&F University,Zhejiang Lin′an 311300)

机构地区：[1]无锡开放大学,江苏无锡214011 [2]浙江农林大学风景园林与建筑学院,浙江临安311300

出　　处：《林业科技》2023年第6期27-30,共4页Forestry Science & Technology

基　　金：第五期江苏省职业教育教学改革研究课题“基于地方特色的高职园林技术专业群建设实践研究”(ZYB581)。

摘　　要：【目的】探究浙江省丹霞地貌岩生灌木种群间的相互关系,为岩生植被的修复和生态保护提供参考依据。【方法】在样方调查的基础上,应用Shannon-Wiener公式、Schoener公式和Pianka公式,对14个岩生灌木种群的生态位进行了测算和分析。【结果】牡荆(1.710)的生态位宽度最大,其他依次为紫弹树(1.454)、杭子梢(1.449)、小蜡(1.398)、紫薇(1.389)、石岩枫(1.365)、胡枝子(1.275)、榔榆(1.199)、盐肤木(1.110)、白马骨(0.917)、绣球绣线菊(0.893)、山合欢(0.879)、檵木(0.874)、肉花卫矛(0.636);C_(ih)在0.5及以上的种对仅有12个,占总对数的13.19%。O_(ih)在0.5及以上的种对仅有22个,占总对数的24.18%。优势种牡荆与其他种的C_(ih)在0.10~0.66之间,O_(ih)在0.09~0.76之间。【结论】种群之间对资源的需求趋同性不高,存在对资源的偏向性和生态位分化趋势。牡荆在岩生植物群落中的优势明显,其他物种对其尚不构成竞争威胁。[Objective] To study the relationship among the rocky shrub populations in Danxia landform,Zhejiang Province,and provide a reference for the restoration of rocky vegetation and ecological protection.[Methods] On the basis of quadrat survey,Shannon-Wiener,Schoener and Pianka formula were used to calculate and analyze the ecological niche of 14 rocky shrub populations.[Results] Vitex negundo var.cannabifolia had the largest niche breadth(1.710),followed by Celtis biondii(1.454),Campylotropis macrocarpa(1.449),Ligustrum sinense(1.398),Lagerstroemia indica(1.389),Mallotus repandus(1.365),Lespedeza bicolor(1.275),Ulmus parvifolia(1.199),Rhus chinensis(1.110),Serissa serissoides(0.917),Spiraea blumei(0.893),Albizzia kalkora(0.879),Loropetalum chinense(0.874),Euonymus carnosus(0.636);There were only 12 species pairs with C_(ih)≥0.5 by the calculation from Scheoener,which accounted for13.19% of the total pairs.There were only 22 species pairs with O_(ih)≥0.5 according to Pianka value,which accounted for 24.18% of the total pairs.The C_(ih) and O_(ih) of the dominant species V.negundo var.cannabifolia versus other species were 0.10-0.66 and 0.09-0.76,respectively.[Conclusion] The demand convergence for resources among populations was not high,and the preference for resources and the trend of ecological niche differentiation existed.The advantage of V.negundo var.cannabifolia in the rocky plants community was obvious,and other species did not pose a competitive threat to it yet.

关 键 词：丹霞地貌 岩生植物 种群 生态位 

分 类 号：Q948.12[生物学—植物学]