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以典型样地法对色季拉山急尖长苞冷杉(Abies georgei var.smithii)林林内粗木质残体进行调查,估算林内粗木质残体的生物量,并分析生物量随海拔高度的变化,以及在不同粗木质残体类型和不同腐烂等级上的分配关系。结果表明:阴坡与阳坡CWD平均生物量分别为65.20 t/hm2、63.46 t/hm2,阴坡CWD随海拔高度变化呈单峰曲线,阳坡则呈双峰曲线;阴坡、阳坡不同腐烂等级生物量均表现为一级腐烂>二级腐烂>三级腐烂,但阳坡二级腐烂CWD生物量比例明显偏高;倒木和枯立木是阴坡CWD的主要输入形式,阳坡则以倒木占绝对优势。
The typical sample plots were used to investigate the coarse woody debris in the Abies georgei var.smithii forest in the Sejila Mountain to estimate the biomass of the coarse woody debris in the forest and to analyze the changes of biomass with the altitude , As well as the distribution of different coarse wood residue types and different decay levels. The results showed that the average biomass of CWD was 65.20 t / hm2 and 63.46 t / hm2 respectively on the shady and sunny slopes. The CWD of the shady slope showed a single peak curve with elevation and the bimodal curve on the sunny slope. The biomass of decay grade showed first decay> second decay> third decay, but the proportion of second decay CWD biomass in sunny slope was obviously higher; the inverted wood and dry standing wood were the main input forms of CWD in shady slope, Wood fell on the absolute advantage.