| 基于主成分分析法综合评价小兴安岭低质林择伐生态改造模式 |
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| 引用本文： | 张泱,董希斌,郭辉.基于主成分分析法综合评价小兴安岭低质林择伐生态改造模式[J].东北林业大学学报,2010,38(12). |
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| 作者姓名： | 张泱 董希斌 郭辉 |
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| 作者单位： | 黑龙江省铁力市人民政府,铁力,152500;森林持续经营与环境微生物工程黑龙江省重点实验室(东北林业大学) |
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| 基金项目： | 黑龙江省重大科技攻关项目(GA07B301-05) |
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| 摘 要： | 针对小兴安岭地区低质林的择伐改造模式,选取土壤理化性质、土壤碳释放和枯落物持水特性3个指标层次,运用主成分分析法综合评价不同改造模式的改造效果。结果表明:不同采伐强度的改造效果,从优到劣的排序为:①采伐强度22%,②采伐强度31%,③采伐强度66%,④采伐强度77%,⑤采伐强度55%,⑥采伐强度47%,⑦采伐强度41%;在实验选择的采伐强度范围内,随采伐强度增加改造效果呈现先减小后增加的趋势,采伐强度22%的改造效果最好,采伐强度41%的改造效果最差。
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| 关 键 词： | 小兴安岭 低质林 择伐改造模式 采伐强度 主成分分析 综合评价 |
Comprehensive Evaluation of Ecological Improvement Modes for Low-quality Forests in Xiaoxing'an Mountains by Selective Cutting Based on Principal Component Analysis |
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| Zhang Yang,Dong Xibin,Guo Hui.Comprehensive Evaluation of Ecological Improvement Modes for Low-quality Forests in Xiaoxing'an Mountains by Selective Cutting Based on Principal Component Analysis[J].Journal of Northeast Forestry University,2010,38(12). |
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| Authors: | Zhang Yang Dong Xibin Guo Hui |
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| Institution: | Zhang Yang(the People's Government of Tieli City in Heilongjiang Province,Tieli 152500,P.R.China),Dong Xibin,Guo Hui(Key Laboratory of Forest Sustainable Management , Environmental Microorganism Engineering of Heilongjiang Province(Northeast Forestry University)) |
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| Abstract: | Principal component analysis was applied to the comprehensive evaluation of ecological improvement modes for low-quality forests in Xiaoxing'an Mountains area by selective cutting using soil physical and chemical properties,release of soil carbon as well as water-holding capacity of litter as index layers.Results showed that the improvement effect was the best at a cutting intensity of 22%,followed by 31%,66%,77%,55%,47% and 41%.The improvement effect decreased first and then increased with the increase of ... |
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| Keywords: | Xiaoxing'an Mountains Low-quality forests Selective cutting Cutting intensities Principal component analysis Comprehensive evaluation |
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