| 三峡库区不同植物篱生态效益评价 |
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| 引用本文： | 黎建强,张洪江,陈奇伯,周红芬.三峡库区不同植物篱生态效益评价[J].长江流域资源与环境,2014,23(3):373. |
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| 作者姓名： | 黎建强 张洪江 陈奇伯 周红芬 |
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| 作者单位： | （1.西南林业大学环境科学与工程学院,云南 昆明 650224；2.北京林业大学水土保持学院,北京 100083；3.昆明有色冶金设计研究院股份公司水土保持工程技术部,云南 昆明 650051 |
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| 基金项目： | 国家科技支撑计划重点项目(2008BAD98B01-03);西南林业大学生态学校级重点学科项目(XKX200902) |
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| 摘 要： | 植物篱是一项具有改良土壤、保持水土、增加土壤肥力和控制面源污染等生态效益的复合农林技术。遵循层次分析法原理，从改良土壤、保持水土、增加土壤肥力和控制面源污染等方面建立了长江三峡库区坡耕地植物篱系统生态效益评价指标体系，应用熵值法与专家评分法计算评价指标权重，并结合层次分析法对不同类型和不同种类植物篱的土壤改良效益、水土保持效益、土壤养分增加效益和面源污染控制效益及综合生态效益进行了分析评价。结果表明：不同类型植物篱综合生态效益以灌木类植物篱最大，草本类植物篱综合生态效益最小，并且灌木类植物篱的土壤改良效益、水土保持效益、增加土壤养分效益和控制面源污染效益均最大；不同种类的植物篱中，黄荆+臭椿植物篱的综合生态效益最大，而毛豆类植物篱具有较高的增加土壤养分的生态效益，紫背天葵+旱菜植物篱控制面源污染的生态效益最大
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| 关 键 词： | 植物篱 水土保持 土壤改良 面源污染控制 效益评价 |
ECO BENEFITS ASSESSMENT OF HEDGEROW SYSTEMS WITH DIFFERENT CATEGORIES AND SPECIES IN THE THREE GORGES RESERVOIR AREA |
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| LI Jian qiang,ZHANG Hong jiang,CHEN Qi bo,ZHOU Hong feng.ECO BENEFITS ASSESSMENT OF HEDGEROW SYSTEMS WITH DIFFERENT CATEGORIES AND SPECIES IN THE THREE GORGES RESERVOIR AREA[J].Resources and Environment in the Yangtza Basin,2014,23(3):373. |
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| Authors: | LI Jian qiang ZHANG Hong jiang CHEN Qi bo ZHOU Hong feng |
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| Institution: | （1.School of Environmental Science and Engineering,Southwest Forestry University,Kunming 650224,China|2.School of Soil and Water Conservation,Beijing Forestry University,Beijing 100083,China|3.Department of Soil and Water Conservation Technology,Kunming Engineering &|Research Institute of Nonferrous Metallurgy Co.,Ltd,Kunming 650051,China |
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| Abstract: | Hedgerow intercropping is a comprehensive agroforestry technique with the eco benefits of soil improvement,soil particle interception,soil conservation,soil fertility enhancement and non point pollution controlling.To evaluate the eco benefits of hedgerows with different categories and species,42 hedgerow inventory plots were arranged in the Jiangjin city of the Three Gorges reservoir area.The properties containing bulk density,moisture content,saturated water conductivity,water stable aggregates,anti scouribility index,anti erodibility,organic matter and soil nutrients concentration of soil which sampled before,behind and under hedgerows,and between hedgerows steep land were tested to evaluate the eco benefits of hedgerow.According to the principle of Analytical Hierarchy Process (AHP),the evaluating indicators system involving soil improvement,soil conservation,soil fertility enhancement and non point pollution controlling containing 17 indicators were established.The weights values were calculated by Entropy and Delphi which help to avoid the subjectivity of experts in computing weights values,and AHP combined to calculate the comprehensive eco benefits values.And then,the eco benefits with different categories and species in the Three Gorges reservoir area were compared according the comprehensive eco benefits values.The results indicated that,the shrub hedgerows had the best eco benefits among the hedgerows with different categories,and shrub hedgerows were of excellent benefits in soil improvement,soil conservation,soil fertility enhancement and non point pollution controlling.Among different species,hedgerows with Vitex negundo and Ailanthus altissima had the best comprehensive eco benefits,Giycine maxhedgerows were of the excellent benefits in soil fertility enhancement,hedgerows with Gynura bicolor and Herba Rorippae were the best one in non point source (NPS) pollution controlling |
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