Plant and arthropod communities in young oak stands: are they determined by site history?
Plant and arthropod communities in young oak stands: are they determined by site history?
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年轻橡树林中的植物和节肢动物群落：它们是由场地历史决定的吗？
DOI：
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发表时间：
2008
影响因子：
3.4
通讯作者：
B. Jessel
中科院分区：
文献类型：
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作者：
M. Gossner;K. Engel;B. Jessel
通过对古林地造林与古农地造林的比较，研究了立地历史对森林植物和昆虫群落的影响。1986 ~ 1994年在德国巴伐利亚州3个不同的生长区建立了18个以栎为主的幼龄阔叶林，调查了维管植物、苔藓、蝽类、草蛉和拟步甲的种类。两个地层，近地面和树冠，进行了采样。与林地相比，造林地的植物和真蝽类的种类密度和丰度在田间层都有较大的增加。然而，森林物种的比例中的植物和真正的错误是显着较低的造林比古林地网站。在林冠中，植食动物的真错误显着更好地代表在造林和植食动物的真错误在reforestations。在造林中，特别是在老枯木中栖息的甲虫是物种贫乏的。结果表明，网站的历史影响生产者和消费者社区在多种方式，即使20年后造林的前农业用地。然而，毗邻现有林分的绿化可被视为有效扩大森林生境的自然保护的宝贵。因此，对这种植树造林的投资不仅仅是一种农业补贴。
Effect of site history on forest plant and insect communities was studied by comparing afforestations on former agricultural land with reafforestations on ancient woodland sites. Vascular plants, mosses, true bugs, lacewings and saproxylic beetles were surveyed at 18 young broadleaved forest sites dominated by oak (Quercus robur), established between 1986 and 1994 in three different growth regions in Bavaria, Germany. Two strata, near ground level and the canopy, were sampled. Compared to woodland reafforestations greater species density and abundance of plants and true bugs were observed in field layer of afforestation sites. Proportion of forest species among plants and true bugs was however significantly lower in afforestations than on ancient woodland sites. In the canopy, zoo-phytophagous true bugs were significantly better represented in afforestations and zoophagous true bugs in reafforestations. Saproxylic beetles, especially inhabitants of old dead wood, were species-poor in afforestations. Results indicate that site history affects both producer and consumer communities in multiple ways, even 20 years after afforestation of former agricultural land. However, afforestations adjacent to existing forest stands can be regarded as valuable to nature conservation in effectively extending forest habitats. Investment in such afforestation therefore represents more than just an agricultural subsidy.