杉木人工林林下植物物种β多样性的研究

Studies on β-diversity index of undergrowth plant in Chinese fir plantation

应用 β多样性测度公式对不同生长发育阶段和不同地位指数的杉木人工林林下植物进行定量分析。结果表明 :不同生长发育阶段和不同地位指数的杉木人工林林下植物 β多样性指数值存在明显差异 ,其中 5 6年生老龄杉木林与 3年生杉木幼林之间的林下植物 β多样性指数值差异尤为明显 ,并且随着人工林生长发育阶段越接近 5 6年生老龄杉木林 ,其林下植物 β多样性指数越小 ;各杉木林群落中 ,14地位指数的样地与 18地位指数的样地间的林下植物

Undergrowth of plants in a Chinese fir plantation in different growth stages and site indices has been quantitatively analysed by using β-diversity index formulas. The results showed that the values of β-diversity index of undergrowth plant in different growth stages and site indices are obviously different, in which the difference between 56-year-old and 3-year-old forests is greatest, and the closer to 56-year-old in growth stages, the smaller in β-diversity index values, in each Chinese fir community, the difference of β-diversity index values of undergrowth plant between 14 and 18 site indices is also great.