Sampling Technique of Arrow Bamboo (Bashania faberi) Clone population

By adopting the nest sampling method,studies were made of sampling techniques for clonal population of Bashania faberi in Wuyipeng Ecological Observation Station of the Giant Pandas,Wolong National Nature Reserve.The determinnation indexes included population density,plant coverages of all layers below bamboo forests,bamboo stem diameter and length of each age-class within 1.00 m² quadrat.In the meanwhile,sampling area increased from 0.01 m² to 25.00 m².Statistical analysis of 3 indexes in different sampling area showed that the population density had a tendency to decrease when sampling-area enlarged,and with the increase of the survey-time,the change range of the plant coverage of all layers reduced.After comprehensive consideration it was thought that 1.00 m² was the best sampling area for the clonal population of Bashania faberi.Finally,the growth index(stem diameter and length) between "total quadrat" plants and 10 strains of random selected perennial bamboo was compared.The quantitative analysis results showed that there was no significant difference (P>0.05) between these two sampling techniques and thus verified the usefulness of bamboo population survey methods during the past route monitoring.