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在云南省思茅松集中分布的4个县市,通过调查30块3～26年生思茅松人工林样地及测定36株标准木,对思茅松人工林的生物量和生产力进行了研究。结果表明:3～26年生林分的生物量为22.39～308.96t.hm-2,其中乔木层、灌木层及草本层生物量分别为7.07～295.74,1.73～52.46和0.78～16.40t.hm-2,枯落物层现存量为0.90～11.00t.hm-2,分别占林分生物量的21.44%～95.72%、2.62%～60.86%、0.39%～31.62%和0.90%～11.00%。随林木的生长,乔木层生物量比例明显增加,灌木层、草本层与枯落物层比例明显降低。乔木层、枯落物层和林分生物量与林龄存在显著的线性正相关,灌木层和草本层生物量与林龄呈不显著负相关。随林龄增加,林分生物量、乔木层生物量和枯落物层现存量的变化规律满足逻辑斯蒂方程。3～26年生思茅松人工林林分的生产力为(9.52±1.31)t.hm-2.a-1,乔木层、灌木层和草本层的生产力分别为(6.29±1.19)、(2.52±0.83)和(0.71±0.31)t.hm-2.a-1。随林龄增长,乔木层生产力呈逻辑斯蒂增长,灌木层和草本层的生产力呈指数函数减小。
The biomass and productivity of Pinus kesiya var. Langbianensis plantation were studied in 30 counties of 3 ~ 26 years old in Simao, Songhua pine plantation and 36 standard wood samples in 4 counties and cities in Yunnan Province where Pinus kwangsiensis was concentrated. The results showed that the biomass of the three-year-old stands was 22.39-308.96 t · hm-2, in which the biomass of tree layer, shrub layer and herb layer were 7.07 ~ 295.74, 1.73 ~ 52.46 and 0.78 ~ 16.40t.hm- The existing litter layer was 0.90-11.00 t · hm-2, accounting for 21.44% -95.72%, 2.62% -60.86%, 0.39% -31.62% and 0.90% -11.00% of stand biomass, respectively. With the growth of trees, the biomass of arbor layer significantly increased, and the proportion of shrub layer, herb layer and litter layer decreased obviously. There was a significant linear positive correlation between arborous layer, litter layer and stand biomass and stand age, while there was no significant negative correlation between shrub layer and herb layer biomass and stand age. With the increase of stand age, the change law of stand biomass, arbor layer biomass and litter layer existing content satisfies the Logistic equation. The productivity of the Pinus kesiya var. Langbianensis plantations was (9.52 ± 1.31) t.hm-2.a-1 from 3 to 26 years old. The productivity of the arbor, shrub layer and herb layers were (6.29 ± 1.19), (2.52 ± 0.83 ) And (0.71 ± 0.31) t.hm-2.a-1. With the increasing of age, the productivity of tree layer increased logically, and the productivity of shrub layer and herb layer decreased exponentially.