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森林破碎化丰富了森林类型多样性,增加了森林边缘长度,从而影响了累计可燃物的异质性。这种异质性影响我们如何管理可燃物、火灾和森林。理解沿气候梯度,以及在同一气候带里的木质生物量破碎化的相对重要性,将提高我们管理森林可燃物及预测森林火灾的能力。本研究沿北方带、温带和热带的气候梯度,按不同湿度,即干旱林和潮湿林;不同结构,即开放冠层(年轻的)对郁闭冠层(年老的);不同大小,即小型(10～14hm~2)、中型(33～60hm~2)、大型(100～240hm~2),来评估林段中森林可燃物的特点。沿斑块林边缘,我们由外向内测定了一系列横断面样地的半腐层、枯枝落叶层、细碎和粗糙木质残体、死立木和活体生物量。本研究目的是确定沿森林横断面纵深的森林结构和可燃物的特点有何不同,并是否随温度、湿度、结构和斑块大小的变化而有所不同。结果表明,粗木质残体、细木质残体、死立木和活体树木生物量与年平均温度值之间不存在线性关系。温带的生物量最大。北方带森林的地面可燃物(半腐层和枯枝落叶层)与温度和生物量之间呈线性关系。我们对数据进行5维多因素方差分析后发现,温度、湿度和年龄/结构对森林地面可燃物、落下的木质碎片以及活体树木生物量均有重大影响。斑块大小影响了森林地面燃料生物量和活树生物量。距离森林边缘的远近仅在一些样本体中影响明显。但也有一些例外的情况,即森林边缘和内部没有明显的区别。
Forest fragmentation enriches the diversity of forest types and increases the length of forest margins, thereby affecting the heterogeneity of accumulated combustibles. This heterogeneity affects how we manage combustibles, fires and forests. Understanding the relative importance of fragmentation along the climatic gradients and in the same climatic zone will improve our ability to manage forest fuel and predict forest fires. In this study, the climate gradient along the northern belt, temperate zone and tropical zone, according to different humidity, namely dry and wet forests; different structures, namely open canopy (young) to canopy closed (old); different sizes Small (10 ~ 14 hm ~ 2), medium (33 ~ 60 hm ~ 2) and large (100 ~ 240 hm ~ 2) can be used to assess the characteristics of forest fuel in the forest. Along the edge of the patch forest, we measured half-decay, litter, fine and coarse wood debris, dead standing wood, and living biomass from a series of cross-sectional plots from the outside to the inside. The purpose of this study is to determine how different the forest structure and combustibles are along the forest cross-section and whether they vary with temperature, humidity, structure and patch size. The results showed that there was no linear relationship between the biomass of coarse woody debris, fine woody debris, dead standing wood and living tree and the average annual temperature. Temperate biomass is the largest. Ground combustibles (semi-decay and litter layers) with forests in the north have a linear relationship with temperature and biomass. We performed a 5-dimensional multi-factor analysis of variance on the data and found that temperature, humidity and age / structure have a significant impact on forest floor combustibles, falling wood chips and live tree biomass. Plaque size affects forest floor fuel biomass and living tree biomass. The distance from the edge of the forest is only noticeable in some samples. However, there are some exceptions, that is, there is no obvious difference between the fringes and the interior of forests.