单 位：
山西省农业科学院果树研究所;山西大学环境与资源学院;山西大学黄土高原研究所
关键词：
山楂园;草本植物;TWINSPAN分类;DCA排序;物种多样性
摘 要：
采用双向指示种分析(TWINSPAN)和除趋势对应分析(DCA)等数量生态分析法,对山西省农业科学院果树研究所山楂园草本植物(杂草)群落生态关系进行研究,旨在为山楂园草本植物管理提供科学依据。结果表明,该山楂园共有53种草本植物,属于26科48属,其中菊科、禾本科和豆科草本植物占45.29%;多年生草本植物占58.49%;中生草本植物占54.70%。TWINSPAN分类将42个样方划分8个植物群丛,分类结果较好地反映了该山楂园草本植物群丛类型分布特征和优势种生活型的变化,并在DCA二维排序图上得到了较好的验证,即沿DCA第二轴从下到上,群丛优势种由一年生草本植物逐渐过渡到多年生草本植物。植物种的水分生态型在DCA二维排序图上无明显的分布规律,以中生植物为主的群丛(Ⅵ)物种多样性高于以旱生植物为主的群丛(Ⅴ和Ⅶ),表明人为干扰是影响山楂园草本植物分布的主导因子。在未来山楂园管理中,应合理调控草本植物数量,提高山楂果实产量和品质。
译 名：
Quantitative Relationship of Herbaceous Plant Communities in a Crataegus pinnatifid Orchard
作 者：
Li Yao;Cai Ruyue;Guo Yingying;Li Suqing;Yang Mingxia;Institute of Loess Plateau, Shanxi University;College of Environmental & Resource Science, Shanxi University;Pomology Institute, Shanxi Academy of Agricultural Sciences;
关键词：
Crataegus pinnatifid orchard;;herbaceous plants;;TWINSPAN classification;;DCA ordination;;species diversity
摘 要：
The ecological relationship of herbaceous plant communities in a Crataegus pinnatifid orchard at the Pomology Institute in Shanxi Academy of Agricultural Sciences was studied using the methods of two-way indicator species analysis(TWINSPAN) and detrended-correspondence analysis(DCA), aiming to provide references for the management of herbaceous plants in Crataegus pinnatifid orchard. The results showed that there were 53 herbaceous plant species(i.e., weeds) belonged to 26 families and 48 genera in the orchard,among which the three families of Compositae, Gramineae and Leguminosae accounted for 45.29%, perennial plants, and mesophytes plants accounted for 58.49% and 54.70%, respectively. The 42 quadrats of herbaceous plants in the orchard were classified into eight associations. The results of TWINSPAN classification clearly reflect the distribution characteristics of the herbaceous plant associations and life-span changes of dominant species in the orchard, and is confirmed by the two-dimensional ordination diagram of DCA, that is, the dominant species of the herbaceous plants gradually change from annual species to perennial species along the second axis of DCA from top to bottom. However there is no obvious distribution regularity of herbaceous plant ecotypes in the DCA ordination diagram, and the species diversity of the association( Ⅵ) dominated by mesophytes is higher than that of the associations(Ⅴ and Ⅶ) dominated by xerophytes, indicating that human disturbance has obvious influence on the community of herbaceous plant in the orchard. Rational regulation of herbaceous plant quantity in future management of the orchard could promote the quality and yield of hawthorn fruit.
