| 水土保持林土壤改良效益评价指标体系的研究 |
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| 引用本文： | 沈慧,姜凤岐.水土保持林土壤改良效益评价指标体系的研究[J].北京林业大学学报,2000,22(5):96-99. |
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| 作者姓名： | 沈慧 姜凤岐 |
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| 作者单位： | [1]中国林业科学研究院森林生态环境与保护研究所 [2]中国科学院沈阳应用生态研究所 |
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| 摘 要： | 土壤改良效益是水土保持林最直接、最基本的一项效益 ,评价的首要步骤是建立指标体系和确定指标权重 .该文依据水土保持林土壤改良效益评价目的 ,在听取和参考专家意见的基础上 ,确定指标体系的总目标层为效益评价综合指数 ;准则层为土壤肥力、抗蚀性能和抗冲性能 ;指标层为土壤酶活性、有机质含量、水稳性团粒含量和平均重量、直径、pH值、硬度、渗透系数、分散率和团聚度 .并应用层次分析法确定各项指标的权重 ,得到层次单排序和层次总排序两种结果 ,二者均可用于效益的评价计算
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| 关 键 词： | 水土保持林 土壤改良效益 指标体系 权重 |
Evaluation index system on soil improvement benefit of water and soil conservation forests. |
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| Shen Hui, Jiang Fengqi. Journal of Beijing Forestry University.Evaluation index system on soil improvement benefit of water and soil conservation forests.[J].Journal of Beijing Forestry University,2000,22(5):96-99. |
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| Authors: | Shen Hui Jiang Fengqi Journal of Beijing Forestry University |
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| Abstract: | Soil improvement benefit is the most direct and essential benefit of water and soil conservation forest. The first step of evaluation is to establish index system and calculate the weights of indexes. According to the purpose of benefit evaluation and opinions of specialists, index system was defined in this paper that total objective layer was comprehensive index, criterion layer consisted of soil fertility, anti\|erodibility and anti\|sourability, and index layer was composed of soil enzyme activities, organic matter content, water stable aggregate content, mean weight diameter, pH, soil rigidity, infiltrate coefficient disperse ratio and aggregate degree. And AHP method was applied to calculate the index weights, which produced two results of single\|array adn total\|array of hierarchy. And both of them could be used to calculate the benefits. |
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| Keywords: | water and soil conservation forest soil improvement benefit index system weights of indexes |
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