杉木人工林林下植物的消长规律

The Laws of Understory Plant Growth in Chinese fir Plantations

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>

This paper discussed growth laws of understory plant of Chinese fir plantations in different ages,different site indexes and different rotations The results showed that the mean quantity of understory plant species show mature forest>young forest>middle aged forest;the biomass of understory plant,accumulation quantity of litterfall of Chinese fir and understory plant in different site indexes,forest ages and rotations exist significant difference;the richness index, diversity index and evenness index of understory plant show mature forest>young forest>middle aged forest