Recovery of Collembola in Pinus tabulaeformis Plantations
Recovery of Collembola in Pinus tabulaeformis Plantations
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DOI：
10.1016/s1002-0160(15)60099-6
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发表时间：
2017-02-01
期刊：
影响因子：
5.7
通讯作者：
Ge Feng
中科院分区：
文献类型：
--
作者：
Chang Liang;Wang Baifeng;Ge Feng
中国已大面积地发展人工林。鉴于我国人工林面积大，对人工林土壤动物及其恢复所需条件进行评价具有重要意义。2008年和2009年，选择26年种植园和45年生油松人工林（P26和P45）和80-260年生天然林（N260），研究了不同林龄/林型对油松人工林凋落物层和土壤层弹尾目群落的影响。与N260相比，P26和P45的土壤条件显着恶化。P26和P45的土壤容重较高，土壤有机质、土壤氮、枯落物厚度、土壤pH和土壤含水量较低。总的来说，同一属的弹尾目在所研究的所有年龄的森林中发生的倾向，但弹尾目群落结构的显着影响的森林年龄的差异。在凋落物层和土壤层中，弹尾目的密度和属丰富度均以N260最高，P26最低。一些跳虫群体敏感的土壤条件，特别是森林年龄。N260与相对高丰度的Plutomurus collebelans和。P45与相对高丰度的假folsomia跳虫。典范对应分析表明，林分年龄对凋落物层和土壤层弹尾目群落结构的影响较大。非度量多维尺度的排序分析还发现，跳虫群落没有恢复到天然林的水平，在26年的更新后，皆伐。即使在皆伐后45年的再生中，弹尾目群落也只是轻微恢复到天然林的水平。研究结果表明，油松人工林皆伐后26年和45年的更新中，弹尾目群落和土壤条件均未得到恢复，但由于人工林和天然林中分布着相同的弹尾目，因此，在未来的更新过程中，弹尾目群落和土壤条件都有恢复的潜力。
Large areas of forest plantations have been developed in China. It is important to evaluate the soil fauna in plantations and the conditions needed for their recovery in view of the large areas of plantations in China. Three Pinus tabulaeformis forests, a 26-year-old plantation (P26) and a 45-year-old plantation (P45), exposed to clear-cutting before plantation, and an 80-260-year-old natural forest (N260), were chosen to study the effects of different forest ages/types on Collembola community in the litter and soil layers during 2008 and 2009. Soil conditions in P26 and P45 were significantly deteriorated when compared to N260. A higher value of soil bulk density and lower values of soil organic matter, soil N, litter depth, soil pH, and soil water content were observed in P26 and P45. Totally, the same genera of Collembola tended to occur in the forests of all ages studied; however, the Collembola community structure was significantly impacted by the differences in forest age. Both in the litter and soil layers, the density and generic richness of the Collembola were the highest in N260 and the lowest in P26. Some collembolan groups were sensitive to soil conditions in particular forest ages. N260 was associated with relatively high abundance of Plutomurus collembolans and. P45 with relatively high abundance of Pseudofolsomia collembolans. The canonical correspondence analysis showed that the community structure of Collembola was mainly affected by forest age in both litter and soil layer. The ordination analysis of non-metric multidimensional scaling also found that the Collembola community did not recover to the level of natural forests in 26-year regeneration after clear-cutting. Even in 45-year regeneration after clear-cutting, the Collembola community only showed a slight recovery to the level of natural forests. Our results clearly showed that both Collembola community and soil conditions did not recover in 26- and 45-year regeneration,after clear-cutting in P. tabulaeformis plantations; however, they might have the potential to recover in the future because the same genera of Collembola were distributed in the plantations and natural forests.