林分密度和茎层能作为大草原木本植物招种的地上生物量指标吗

S. Traoré, Sébastien Ange Habih Nombré, Issiaka Keïta, H. Nacro, B. Sinsin
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引用次数: 0

摘要

木本物种的茎密度和大小分层是草原植被条件及其地貌的信息,而它们的变化影响着木本种群的功能。本研究旨在评价与地上生物量相关的苏丹大草原木本树种的林分密度和大小变异性。在50 m × 20 m的30个样地,按灌丛、灌丛和林地三种植被类型,测定了总高和胸径≥5 cm。计算比较了不同立地的物种多样性、茎密度、茎高和基部面积,并评价了不同立地的茎粗级变化。估算了地上总生物量,建立了林分密度与地上生物量和基面积之间的线性关系。结果表明,在3个不同的地点,通过植被类型共鉴定出58种植物,其中藤本植物42科18属。在更新监测中,密度和分层可以作为地上生物量波动的指标。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Can Stand Density and Stem Stratification Be Indicators of Aboveground Biomass in Woody Plant Recruitment in Savannah
Stem density and size stratification of woody species are informative of vegetation conditions and its physiognomy in savannah whereas their variation influence woody population functioning. Current study endeavoured to eva-luate the stand density and size variability of woody species related to aboveground biomass in a Sudanian savannah. Total height, stem diameter at breast height (dbh) ≥ 5 cm were measured in 30 plots of 50 m × 20 m laid in respect to vegetation type as bowal, shrubland and woodland. Species diversity, stem density, height and basal area were calculated and compared across sites and variation in stem dbh classes evaluated. Total aboveground biomass was estimated and thereafter linear relationships were established between stand density and aboveground biomass, and basal area. Results revealed three different sites with an overall 58 species identified through vegetation type including liana species (4 stems in bowal) with 18 genera and 42 families. sity and stratification could be considered as indicators of aboveground biomass fluctuating in regeneration monitoring.
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