山西左云县兴隆沟煤矸石山自然定居植物群落数量分类与排序

Classification and ordination of naturally colonized plant communities at coal gob piles of Xinglonggou mining areas in Zuoyun county,Shanxi province,China

采用空间代替时间方法获得数据,应用双向指示种分析法(TWINSPAN)和除趋势对应分析(DCA)相结合的方法,对山西左云县兴隆沟煤矸石山自然定居植物群落进行分类和排序,将54个样方划分为8个群丛,即菊叶香藜群丛(Ass.Chenopodium foetidum)、旱榆-披碱草群丛(Ass.Ulmus glaucescens-Elymus dahuricus)、铁杆蒿+沙生冰草群丛(Ass.Artemisia sacrorum-Artemisia sieversiana)、黄刺玫群丛(Ass.Rosa xanthina)、野艾蒿+蒙古蒿群丛(Ass.Artemisia lavandulaefolia-Artemisia mongolica)、二裂委陵菜+披碱草群丛(Ass.Potentilla bifurca-Elymus dahuricus)、针茅+蒙古蒿群丛(Ass.Stipa capillata-Artemisia mongolica)、益母草群丛(Ass.Leonurus artemisia),分类结果很好地反映了植物群落类型的分布与环境因子之间的关系,并在DCA二维排序图上得到较好的验证。54个样方DCA排序表明,影响左云县兴隆沟煤矿矸石山自然定居的植物群落分布的主导环境因子是土壤水分、矸石堆积时间和坡向。

Based on the field investigation,data were collected simultaneously using a space- for- time substitution,and two- way indicator species analysis（ TWINSPAN） and detrended correspondence analysis（ DCA）were applied to analyze the quantitative classification and ordination of naturally colonized plant communities on coal gob piles at Xinglonggou mining areas in Zuoyun county,Shanxi province,China. 54 samples with 69 plant species were classified by TWINSPAN into 8 associations,they are,Ass. Chenopodium foetidum,Ass. Ulmus glaucescens- Elymus dahuricus,Ass. Artemisia sacrorum- Artemisia sieversiana,Ass. Ulmus glaucescens,Ass.Artemisia lavandulaefolia- Artemisia mongolica,Ass. Potentilla bifurca- Elymus dahuricus,Ass. Stipa capillata- Artemisiamongolica and Ass. Leonurus artemisi. The results of DCA ordination were consistent with TWINSPAN classification,and indicated that the altitude,slope and soil moisture were the dominant ecological factors responsible for the flora distribution in the research areas.