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为探讨复层异龄林营建初期对土壤物理结构和养分状况的影响,研究了浙西地区杉木林下套种不同树种土壤理化特征的变化。结果表明林下套种树种后林地土壤物理结构均得到不同程度的改善,土壤养分状况进一步好转。并运用多因素主成分分析方法,评价了不同复层林模式土壤养分含量规律,并将土壤养分状况的综合优势作了排序。其结果显示杉木林下套植的12种植物在种植初期对土壤养分改良效果较好的为麻栎、毛红椿、南天竺、十大功劳、红豆杉、椤木石楠和蚊母,其中麻栎和毛红椿改良效果最佳。
In order to investigate the effect of different ages on the physical structure and nutrient status of the soil during the initial stage of the establishment of the multi-layer anaerobic forest, the changes of soil physical and chemical characteristics of different tree species in the understory area of Cunninghamia lanceolata in western Zhejiang were studied. The results showed that the soil physical structure of the forest land had been improved to some extent after the intercropping of tree species, and the soil nutrient status further improved. By using the method of multi-factor principal component analysis, the rule of soil nutrient content in different stratum forest was evaluated, and the comprehensive advantage of soil nutrient status was sorted. The results showed that 12 plants planted under Chinese fir plantation had better effects on soil nutrient improvement at the early stage of planting: Quercus acutissima, Maohongchun, Nantianzhu, ten major merit, yew, alder heather and mosquito, among which Quercus acutissima Mao Hongchun to improve the best.