| 次生金钱松林自然化培育前期的恢复特征 |
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| 引用本文： | 王良衍,袁世杰,杨同辉.次生金钱松林自然化培育前期的恢复特征[J].福建林业科技,2010,37(3). |
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| 作者姓名： | 王良衍 袁世杰 杨同辉 |
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| 作者单位： | 1. 浙江天童国家森林公园,浙江,宁波,314115
2. 浙江省宁波市农业科学研究院,浙江,宁波,315040 |
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| 基金项目： | 宁波市鄞州区科研基金 |
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| 摘 要： | 对宁波市鄞州区天童林场盘山林区退化金钱松人工林实施择伐、留养和补植先锋树种的近自然化改造,比较不同林分早期恢复生长的差异。结果表明:①改造6年后,山坡上的木荷、青冈和沟谷上的红楠等地带性常绿阔叶树种呈快速的恢复生长,已形成了一个高3~5 m的更新层,林分结构得到改善,已形成松阔异龄混交林,比对照区林分蓄积量分别提高68.3%和18.9%。②通过抚育使山坡和沟谷类型更新层的优势种群密度分别达2 538、3 183株.hm-2,比对照区提高1.8倍、7.2倍;山坡类型更新的木荷和青冈种群的个体数量分布基本上呈正态分布,这表明更新种群都处于恢复中前期增长进程阶段;沟谷类型更新的红楠种群个体数量呈逆J型分布,已成为稳定型种群。③改造后混交林群落结构发生变化,更新优势种群抗胁迫性显著增强。
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| 关 键 词： | 金钱松人工林 近自然化改造 恢复特征 |
Recovery of Close-to-Nature Silviculture of Pseudolarix ambabilis Secondary Forests at the Early Stage |
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| WANG Liang-yan,YUAN Shi-jie,YANG Tong-hui.Recovery of Close-to-Nature Silviculture of Pseudolarix ambabilis Secondary Forests at the Early Stage[J].Journal of Fujian Forestry Science and Technology,2010,37(3). |
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| Authors: | WANG Liang-yan YUAN Shi-jie YANG Tong-hui |
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| Institution: | WANG Liang-yan1,YUAN Shi-jie1,YANG Tong-hui2(1.Tiantong National Forest Park,Ningbo 314115,Zhejiang,China,2.Ningbo Academy of Agricultural Science,Ningbo 315040,China) |
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| Abstract: | To restore broad-leaved forest from Pseudolarix amabilis forest and ameliorate the community structure and ecological function,we restructured the Pseudolarix amabilis forest by selecting cutting and replanting,in Tiantong Wood Farm,Ningbo.Results were that: 1) the zonal evergreen broad-leaved species,such as Shima superba and Cyclobalanopsis glauca on the hillside and Machilus thunbergii in the valley,grew fast after 6 years' recovery.A 3～5m regeneration layer had formed,and the forest stand was ameliorated.The former forest had changed to be a mixed Pseudolarix amabilis with broad-leaved trees forest,with an increase of 68.3% and 18.9% in volume respectively contrasted to the managed forest.2) dominant species in the regeneration layer of hillside and valley,reached to a density of 2 538/hm2 and 3 183/hm2,1.8 and 7.2 times higher than the contrasted forest respectively;the amounts of the hillside regeneration type,Shima superba and Cyclobalanopsis glauca showed a normal distribution,which indicated these regeneration populations were in the early-mid growth;the amount of valley regeneration type,Machilus thunbergii showed to be an inversed-J type,which indicated it had been a stable population.3) resistance to presses of dominant species in the regeneration layer had been significantly improved after the change of mixed forest community structure. |
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| Keywords: | Pseudolarix amabilis plantation close-to-nature improvement recovery characteristic |
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