武夷桦与杉木混交效果研究

Study on the Mixed Effect of Betula L.and Cunninghamia lanceolata

为掌握武夷桦的生长规律及其与杉木的混交效果,通过样地调查方法,对采集样地、样方、土壤数据进行了方差分析、Simpson指数分析、Shannon-Wiener指数分析。结果表明,武夷桦与杉木混交对武夷桦的生长具有明显的促进作用,武夷桦—杉木混交林土壤的肥力随武夷桦比例的增加而增加,武夷桦—杉木混交林内的植物种类随武夷桦比例的增加而减小,武夷桦—杉木混交林内的植物多样性指数随武夷桦比例的增加而减小。

In order to master the growth law of Betula L.and its mixing effect with Cunninghamia lanceolata,the sample plot,quadrat and soil data were collected through sample plot investigation.The results of analysis of vari⁃ance,Simpson index and Shannon Wiener index showed that the mixing of Betula L.and Cunninghamia lanceolata significantly promoted the growth of Betula L.,The soil fertility of Betula L.and Cunninghamia lanceolata mixed for⁃est increased with the increase of Wuyi birch proportion,the plant species in Betula L.and Cunninghamia lanceola⁃ta mixed forest decreased with the increase of Betula L.proportion,and the plant diversity index in Betula L.and Cunninghamia lanceolata mixed forest decreased with the increase of Betula L.proportion.