不同林地清理方式对杉木林土壤容重和速效养分含量的影响

摘要

Effects of different site preparations on soil bulk density & available nutrient contents of Cunninghamia lanceolata were studied by using field investigation & indoor analysis .Result shows that :the average soil bulk den-sity which is 1 .37 g · cm -3 in burned area increased by 13 .86% than that of CK ;different site preparations are sig-nificantly different .Soil bulk densities were increased after burning for Cunninghamia lanceolata .Soil fertility was decreased .%　　采用野外调查和室内分析相结合的方法，研究了不同清理方式对杉木林土壤容重和速效养分含量的影响。结果表明，炼山迹地土壤容重平均值为1．37g·cm-3，比对照增加了13．86％，不同林地清理方式差异显著；与不炼山和对照相比，炼山迹地土壤速效养分含量最少，不同林地清理方式差异显著。杉木林炼山后增加了林地土壤容重，降低了土壤肥力。