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广西雅长林区铁坚油杉种群结构分布研究(PDF/HTML)

《南京林业大学学报(自然科学版)》[ISSN:1000-2006/CN:32-1161/S]

Issue:
2017年03期
Page:
71-76
Column:
研究论文
publishdate:
2017-05-31

Article Info:/Info

Title:
Ecological study of Keteleeria davidiana populations of Yachang forest farm in Guangxi Zhuang Autonomous Region
Article ID:
1000-2006(2017)03-0071-06
Author(s):
BAI Weiguo1 XU Huiling2 WU Qingbiao3 LI Tiehua4* LI Jiabo3 LIAO Guoyong3
1.Yachang Forest Farm,Baise 533209, China;
2.Paiyangshan Forest Farm,Ningming 532500, China;
3. Forestry College, Guangxi University, Nanning 530004, China;
4.Forestry College,Central South University of Forestry and Technology,Changsha 410004,China
Keywords:
Keteleeria davidiana size class structure spatial distribution pattern populations regeneration
Classification number :
S718.5
DOI:
10.3969/j.issn.1000-2006.201604046
Document Code:
-
Abstract:
【Objective】A comprehensive understanding of the trends of the Keteleeria davidiana populations in its natural forest of the Guangxi Yachang Forest Farm could provide a basis for its protection, recovery, and utilization in the northwest area of Guangxi.【Methods】 Four representative plots in the forest were selected and assessed using mathematics statistics. The differences in the dynamic changes in K. davidiana populations were analyzed with respect to different plot conditions and the size class, spatial distribution pattern, and regeneration of the trees. 【Result】The size class structures of the four plots were incomplete and were missing different sizes. The size class structures of the four plots were different, they were recession, growth, mature, and stable types. K. davidiana pure forest had a clustered distribution, whereas K. davidiana mixed forest had a uniform distribution. However, the spatial distribution pattern of K. davidiana populations varied in the 2 m × 2 m and 4 m × 4 m grid scale, K. davidiana pure forest changed from a uniform distribution to a clustered distribution, and K. davidiana mixed forest changed from a clustered distribution to a uniform distribution. The regeneration of K. davidiana populations relied on seed breeding followed by sprouting reproduction. 【Conclusion】The dynamic changes of the size class, spatial distribution pattern, and regeneration of K. davidiana populations in the Guangxi Yachang Forest Farm are affected by the community structure and the canopy density. Considering the circumstances is required in determining effective measures for the protection, recovery, and utilization of K. davidiana populations.

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Last Update: 2017-05-20