Plant diversity of secondary forests in response to anthropogenic disturbance levels in montane regions of northeastern China
文献类型：期刊论文
| 作者 | Zhu, JJ; Mao, ZH; Hu, L; Zhang, JX; Zhu, JJ, Chinese Acad Sci, Inst Appl Ecol, Qingyuan Expt Stn & Forest Ecol, Wenhua Rd 72, Shenyang 110016, Peoples R China |
| 刊名 | JOURNAL OF FOREST RESEARCH
 |
| 出版日期 | 2007 |
| 卷号 | 12期号:6页码:403-416 |
| 关键词 | Disturbance Disturbance Level Montane Regions Plant Diversity Secondary Forest |
| ISSN号 | 1341-6979 |
| 英文摘要 | The effects of anthropogenic disturbances on forest structure and plant diversity of secondary forest ecosystems were evaluated based on the classification by site factors in the montane regions of northeastern China. Forty-five sample plots containing 720 sub-plots of overstory species (8 m x 8 m), 1,440 quadrats of understory species (2 m x 2 m), and 1,440 quadrats of herbaceous layer species (1 m x 1 m) were clustered into five groups (G1, G2, G3, G4 and G5) by site variables with Hierarchical Cluster Analysis. Meanwhile, the disturbance levels corresponding to the five groups were determined according to the factors influencing human disturbances (D0-G2, D1-G1, D2-G3, D3-G5, and D4-G4). Species diversities of overstory, understory, herbaceous layer and overall species were evaluated using species number, Margalef index, Pielou index, Shannon-Wiener index, and Simpson index; and beta-diversities (Whittaker index, Cody index). Basal area of stands exhibited a decreasing trend along the disturbance level due to a gradual increase in the extraction of timber by the human disturbances. The indices of species diversity suggested that overstory and understory species were distributed evenly among the groups or disturbance levels. There were no absolutely dominant tree species in the secondary forest ecosystems. The differences in site factors and the current disturbance intensities were not intense enough to lead to loose changes in overstory and understory species. The species diversity indices exhibited the maximum values at D3 (G5) for herbaceous layer species; this may suggest that the current disturbance intensities were intense enough to lead the changes of herbaceous layer species. Three rare and endangered species (Juglans mandshurica, Fraxinus mandshurica and Acanthopanax senticosus) were found within the secondary forests. These rare and endangered species appeared in each clustered group or disturbance level, which suggested that the current disturbance intensity in the study area was not strong enough to influence the distribution of rare and endangered species. The current disturbances in the secondary forests may not lead to a decrease in stability and complexity of the overstory and understory species, but the higher disturbance level may be intense enough to change the habitat fitness for the herbaceous species. |
| 学科主题 | Forestry |
| 语种 | 英语 |
| WOS记录号 | WOS:000251145100002 |
| 公开日期 | 2011-09-23 |
| 源URL | [http://210.72.129.5/handle/321005/54577]  |
| 专题 | 沈阳应用生态研究所_沈阳应用生态研究所 |
| 通讯作者 | Zhu, JJ, Chinese Acad Sci, Inst Appl Ecol, Qingyuan Expt Stn & Forest Ecol, Wenhua Rd 72, Shenyang 110016, Peoples R China |
| 推荐引用方式 GB/T 7714 | Zhu, JJ,Mao, ZH,Hu, L,et al. Plant diversity of secondary forests in response to anthropogenic disturbance levels in montane regions of northeastern China[J]. JOURNAL OF FOREST RESEARCH,2007,12(6):403-416. |
| APA | Zhu, JJ,Mao, ZH,Hu, L,Zhang, JX,&Zhu, JJ, Chinese Acad Sci, Inst Appl Ecol, Qingyuan Expt Stn & Forest Ecol, Wenhua Rd 72, Shenyang 110016, Peoples R China.(2007).Plant diversity of secondary forests in response to anthropogenic disturbance levels in montane regions of northeastern China.JOURNAL OF FOREST RESEARCH,12(6),403-416. |
| MLA | Zhu, JJ,et al."Plant diversity of secondary forests in response to anthropogenic disturbance levels in montane regions of northeastern China".JOURNAL OF FOREST RESEARCH 12.6(2007):403-416. |
入库方式： OAI收割
来源：沈阳应用生态研究所
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