| 北京山区防护林适宜林分结构研究 |
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| 引用本文： | 余新晓,王雄宾,张晓明. 北京山区防护林适宜林分结构研究[J]. 北京林业大学学报, 2008, 0(Z2) |
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| 作者姓名： | 余新晓 王雄宾 张晓明 |
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| 作者单位： | 水土保持与荒漠化防治教育部重点实验室北京林业大学水土保持学院;中国水利水电科学研究院泥沙研究所; |
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| 基金项目： | 国际科技合作项目(2006DFA01780); 国家林业局林业科学技术研究项目(2006-69); “十一五”国家科技支撑计划项目(2006BAD03A02) |
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| 摘 要： | 根据北京山区野外试验观测资料,分析了郁闭度、层次结构对防护林产沙量的影响。结果表明:油松林和刺槐林的产沙量与其郁闭度关系十分紧密;当郁闭度从0.3增加到0.7时,随着郁闭度的增大油松林和刺槐林地的产沙量一直在减少,当郁闭度超过0.7时,反而略呈上升趋势,北京山区油松林和刺槐林的郁闭度以0.7左右为宜。林地产沙量与林分层次结构之间有密切的线性关系,林中乔灌草各层盖度均大于50%,有良好的枯落层时,防止土壤侵蚀功能最好。
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| 关 键 词： | 郁闭度 层次结构 产沙量 适宜林分结构 |
Suitable stand structure of shelterbelts in Beijing mountainous area |
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| YU Xin-xiao,WANG Xiong-bin,ZHANG Xiao-ming. Key Laboratory of Soil , Water Conservation , Desertification Combating of Ministry of Education,School of Soil , Water Conservation,Beijing Forestry University,,P.R.China. Suitable stand structure of shelterbelts in Beijing mountainous area[J]. Journal of Beijing Forestry University, 2008, 0(Z2) |
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| Authors: | YU Xin-xiao WANG Xiong-bin ZHANG Xiao-ming. Key Laboratory of Soil Water Conservation & Desertification Combating of Ministry of Education School of Soil Water Conservation Beijing Forestry University P.R.China |
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| Affiliation: | YU Xin-xiao1,WANG Xiong-bin1,ZHANG Xiao-ming2.1 Key Laboratory of Soil , Water Conservation & Desertification Combating of Ministry of Education,School of Soil , Water Conservation,Beijing Forestry University,100083,P.R.China,2 Department of Sedimentation,China Institute of Water Resources , Hydropower Research,Beijing,100044,P.R.China. |
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| Abstract: | According to field experiment data of Beijing mountainous areas,the effects of canopy density and hierarchical structure on sediment production in shelterbelts were analyzed.Results show that the sediment production in Pinus tabulae-formis forest and Robinia pseudoacacia has a quite close relationship with the canopy density.When the canopy density increases from 0.3 to 0.7,the sediment production of P.tabulae-formis forest and Robinia pseudoacacia forest is decreasing all the time.With a canopy density abo... |
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| Keywords: | canopy density hierarchical structure sediment production suitable stand structure |
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