| 摘要: |
| 【目的】对内蒙古大青山主要植被类型综合生态效益进行评价。【方法】应用层次分析法（AHP）建立内蒙古大青山主要植被类型综合生态效益的评价指标体系和评价模型，对3种森林类型(油松林、白桦林、落叶松林)的20个指标进行测定，对各指标进行无纲量化处理后计算各自的权重，然后计算大青山油松林、落叶松林、白桦林3种森林类型的综合生态效益指数。【结果】3种森林类型6种评价指标的生态效益排序中，就生态系统结构与功能而言，白桦林＞落叶松林＞油松林；就涵养水源而言，落叶松林＞白桦林＞油松林；就改良小气候、水土保持和改良土壤而言，白桦林＞落叶松林＞油松林；就固碳放氧而言，落叶松林＞油松林＞白桦林。【结论】内蒙古大青山3种森林类型综合生态效益大小依次为:白桦林(1.067)>落叶松林(1.036)＞油松林(0.742)。 |
| 关键词: 大青山 生态效益 指标体系 层次分析法 |
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| 基金项目:林业公益性行业科研专项(200804027-03,04) |
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| Evaluation of the ecological benefits of main forest type in Inner Mongolian Daqing mountain |
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| Abstract: |
| 【Objective】Based on the present condition in Daqing Mountain,the integrated ecological benefits of Daqing Mountain were evaluated through single-factor research.【Method】Using the Analytic Hierarch process(AHP)the ecological benefit index system and evaluation model were established to evaluate ecological benefits of ecological forest of Pinus tabulaeformis,Btula platyphlla,Larix prince rupprecht.【Result】The six index ecological benefits sequence was:ecosystem structure and function(Btula platyphlla＞Larix prince rupprecht＞Pinus tabulaeformis);Water conservation(Larix prince rupprecht＞Btula platyphlla＞Pinus tabulaeformis);improved micro-climate,water and soil conservationa and forest soil(Larix prince rupprecht＞Btula platyphlla＞Pinus tabulaeformis);solid carbon discharge oxygen(Larix prince rupprecht＞Pinus tabulaeformis＞Btula platyphlla).【Conclusion】The result indicated that the comprehensive ecological benefit index of ecological forest was Btula platyphlla(1.067)＞Larix prince rupprecht(1.036)＞Pinus tabulaeformis(0.742）. |
| Key words: Daqing mountain ecological benefit index system the analytic hierarch process |
