Oliveira Kennedy Nunes, Miguel Eder Pereira, Martins Matheus Santos, Rezende Alba Valéria, Dos Santos Juscelina Arcanjo, Nappo Mauro Eloi, Matricardi Eraldo Aparecido Trondoli
Department of Forest Engineering, Federal University of Brasília (UnB), Brasilia 70297-400, DF, Brazil.
Plants (Basel). 2024 Oct 9;13(19):2826. doi: 10.3390/plants13192826.
Research related to Cerradão vegetation focuses more on the floristic-structural aspect, with rare studies on the quantification of volume and biomass stocks, and even fewer investigating the increments of these attributes. Using a systematic sampling method with subdivided strips and 400 m plots, the density found was 1135, 1165, and 1229 trees/ha in 2012, 2020, and 2023, respectively, in Lajeado State Park, Tocantins State, Brazil. Volume was estimated using the equation v=0.000085D2.122270H0.666217, and biomass was estimated using the equation AGB=0.0673ρD2H0.976. Vegetation dynamics were assessed using growth increment, recruitment, mortality, turnover rate, and time. The results indicated that dynamics have increased since the start of monitoring. Typical Cerrado species, in the strict sense, were replaced by those from forest environments. The total production in volume and biomass was 160.91 m/ha and 118.10 Mg/ha, respectively, in 2023. The species of , , , and showed the highest increment values in volume and biomass. For the community, the average values were 4.04 m/ha/year and 3.54 Mg/ha/year. The community has not yet reached its carrying capacity and stores a significant amount of biomass. This is influenced by the transition of the study area from an exploited environment to a conservation unit (park) and by its location in a transitional area with the Amazon biome.
与塞拉多植被相关的研究更多地集中在植物区系结构方面，对体积和生物量储量的量化研究较少，而对这些属性增量的研究更少。在巴西托坎廷斯州拉热阿多州立公园，采用带有细分样带和400米样地的系统抽样方法，2012年、2020年和2023年发现的树木密度分别为每公顷1135棵、1165棵和1229棵。体积采用公式v = 0.000085D2.122270H0.666217估算，生物量采用公式AGB = 0.0673ρD2H0.976估算。利用生长增量、更新、死亡率、周转率和时间评估植被动态。结果表明，自监测开始以来，动态变化有所增加。严格意义上的典型塞拉多物种被来自森林环境的物种所取代。2023年，体积和生物量的总产量分别为160.91立方米/公顷和118.10吨/公顷。 、 、 和 物种在体积和生物量方面显示出最高的增量值。对于该群落，平均值分别为4.04立方米/公顷/年和3.54吨/公顷/年。该群落尚未达到其承载能力，储存了大量生物量。这受到研究区域从被开发环境转变为保护单位（公园）以及其位于与亚马逊生物群落的过渡区域的影响。
