| 秦岭南坡不同生境条件下栓皮栎伐桩萌芽特性 |
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| 引用本文： | 薛瑶芹,张文辉,周建云,杨保林,周民建.秦岭南坡不同生境条件下栓皮栎伐桩萌芽特性[J].林业科学,2011,47(7). |
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| 作者姓名： | 薛瑶芹 张文辉 周建云 杨保林 周民建 |
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| 作者单位： | 1. 西北农林科技大学生命科学学院 杨凌712100;西部环境与生态教育部重点实验室 杨凌712100
2. 西部环境与生态教育部重点实验室 杨凌712100 |
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| 基金项目： | 国家自然科学基金项目(30872018) |
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| 摘 要： | 以陕西省佛坪县的栓皮栎伐桩为研究对象,分析2种生境条件下栓皮栎伐桩直径和高度与萌苗数量、萌苗生长的关系,并通过2年跟踪观测研究伐桩的萌发能力。结果表明:1)阳坡伐桩上的萌苗数量多于阴坡,但阴坡的萌苗生长量(基径、高度和冠幅)优于阳坡;2)萌苗数量随伐桩直径增大先增加后减少,直径在15～25cm间的伐桩萌苗数量最多,萌苗生长量随伐桩直径增加先减小后增加;3)伐桩高度与萌苗数量的关系不明显,随着伐桩高度增加,萌苗生长量增加;4)萌苗基径随萌苗数量增多而减小,萌苗高度与之相反,阳坡萌苗数量与萌苗生长量的关系比阴坡密切;5)砍伐2年后,伐桩萌发能力和萌苗生长量均出现降低趋势。栓皮栎伐桩的萌苗数量不仅受到光照条件的影响,也受到伐桩直径和砍伐后时间长度的影响,但萌苗的生长则受到环境条件、伐桩直径、伐桩高度以及萌苗数量的共同影响。因此,择伐栓皮栎次生林中基径为15～25cm的个体最有利于林地快速恢复,在随后的经营管理中控制伐桩的萌苗数量并疏伐过密的萌苗丛有利于萌苗生长。
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| 关 键 词： | 栓皮栎 伐桩萌苗 伐桩直径 伐桩高度 回归分析 |
Sprouting and Growth Characteristics of Quercus variabilis Stump after Cutting in Different Habitats of the Southern Slope of the Qinling Mountains |
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| Xue Yaoqin,Zhang Wenhui,Zhou Jianyun,Yang Baolin,Zhou Minjian.Sprouting and Growth Characteristics of Quercus variabilis Stump after Cutting in Different Habitats of the Southern Slope of the Qinling Mountains[J].Scientia Silvae Sinicae,2011,47(7). |
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| Authors: | Xue Yaoqin Zhang Wenhui Zhou Jianyun Yang Baolin Zhou Minjian |
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| Institution: | Xue Yaoqin1,2 Zhang Wenhui2 Zhou Jianyun2 Yang Baolin2 Zhou Minjian2 (1. College of Life Sciences,Northwest A&F University Yangling 712100,2. Key Laboratory of Environment and Ecology in West China,Ministry of Education Yangling 712100) |
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| Abstract: | Most of natural Quercus variabilis forests in China have degenerated to be secondary forests after overexploitation and continuously cutting. Stump sprouting is the most significant asexual reproduction type in this kind of forests. In this study, 192 Q. variabilis stumps located in sunny slope and shady slope of Foping, Shaanxi Province, China, were investigated in order to understand the stump sprouting capability, sprout growth characteristics and the relationship between sprouting and stump. All stumps ... |
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| Keywords: | Quercus variabilis stump sprouts stump diameter stump height regression analysis |
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