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对不同林龄、地位指数和连栽代数杉木林下植物的生长发育规律进行初步调查分析 ,结果表明 :林下植物种类平均数量表现出成熟林 >幼龄林 >中龄林的趋势 ;不同地位指数、不同林龄和不同连栽代数的杉木林下植物生物量、杉木凋落物积累量和林下植物凋落物积累量存在明显差异 ;林下植物的物种丰富度指数、各多样性指数和均匀度指数均表现出成熟林 >幼龄林>中龄林的趋势
The results showed that: the average number of undergrowth species showed the trend of mature forest> young forest> middle age forest; different status There was a significant difference in the undergrowth biomass, the litterfall accumulation in Chinese fir plantation and the litterfall accumulation in understory plants under different ages and different plantation algebra. The species richness index, diversity index and evenness Degree index showed the trend of mature forest> young forest> middle-aged forest