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林火干扰后中华楠更新恢复和早期生长
李莉, 林文欢, 郑一, 吴悦宏, 袁宝国, 柳泽鑫
汕头市林业科学研究所
摘要:
为了研究林火干扰对中华楠 Machilus chinensis 更新恢复的影响, 更好地培育和经营中华楠人 工林, 对 3 a 生中华楠人工更新林分和林火干扰后天然更新 3 a 的林分生长进行调查和分析。 结果表明, 研究地的林火强度为中度火烧, 林火干扰后中华楠天然更新林分萌生率为 48. 17%。 中华楠天然更新林分 树高年生长量、 地径年生长量和冠幅年生长量分别为 0. 50 m、 1. 20 cm 和 30. 66 cm, 分别比人工更新林 分大 25. 00%、 53. 85%和 34. 06%。 林火干扰后中华楠天然更新林分 31. 38%林木的生长性状优于人工更新 林分, 16. 79%林木未表现出明显差异。
关键词:  中华楠  林火  更新恢复  早期生长
DOI：
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基金项目:广东省林业科技创新项目（2016KJCX013）
Regeneration and Early Growth of Machilus chinensis after Forest Fire Disturbance
LI Li, LIN Wen-huan, ZHENG Yi, WU Yue-hong, YUAN Bao-guo, LIU Ze-xin
Shantou Insititute of Forestry Science,Shantou
Abstract:
To study the effects of forest fire disturbance on the regeneration and restoration of Machilus chinensis, and to improve the cultivation and management of M. chinensis plantation forests, the growth of 3- year-old M. chinensis in both artificial and natural regeneration stands after forest fire disturbance was investigated and analyzed. The results showed that the fire intensity was moderate, and the emergence rate of M. chinensis natural regeneration stand was 48. 17%. The annual growth rates for tree height, ground diameter, and crown width in M. chinensis natural regeneration stand were 0. 50 m, 1. 20 cm, and 30. 66 cm, respectively, which were 25. 00%, 53. 85% and 34. 06% higher than that of artificial regeneration stand. The growth traits of 31. 38% of M. chinensis trees in the natural regeneration stand were better than those in the artificial regeneration stand, while 16. 79% showed no significant difference in growth traits.
Key words:  Machilus chinensis  forest fire  regeneration  early growth