杉木纯林与混交林林下植物多样性比较

Comparison of Undergrowth Plant Diversity of Pure and Mixed Chinese Fir Plantations

[目的]比较杉木纯林与混交林林下植物多样性,为评估人工林生态系统提供理论依据。[方法]选用典型的标准样地对不同类型杉木林下植被多样性进行调查。[结果]杉木木荷混交林林下植被有64种,多样性指数为2.27,远大于杉木纯林;混交林林下植被丰富且数量均衡,更有利于保持水土和有机物分解。[结论]营造针阔混交林比杉木纯林更有利于杉木人工林的可持续发展。

[Objective] The aim was to compare the diversity of undergrowth plants in pure and mixed Chinese fir plantations. [ Method ] Undergrewth plant diversity of pure and mixed Chinese fir plantations were investigated by typical standard sample. [ Result ] There were 64 species of understory vegetation under mixed forest of Cunninghamia lanceolata and Schima superba, and the diversity index was 2.27, which was much higher than that of Cunninghamia lanceolata pure forest. The understory vegetation in mixed forest was rich and the number balanced, more conducive to maintaining the decomposition of soil and water and organic matter. [ Conclusion ] The establishment of coniferous and broad-leaved mixed forest is more conducive to the sustainable development of Chinese fir plantation than pure Chinese fir.