| 生物土壤与生态 |
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| Application of Analytic Hierarchy Process (AHP) in Eecological Benefit Evaluation of Farmland Shelterbelts in Minqin Oasis |
| ZHANG Cai-xia1, WANG Xun-ming1, MAN Duo-qing1,2, JIA Liang-hong3 |
| 1.Key Laboratory of Desert and Desertification, Cold and Arid Regions Environmental and Engineering Research Institute, Chinese Academy of Sciences, Lanzhou 730000, China; 2.Gansu Desert Control Research Institute, Wuwei 733000, Gansu, China; 3.College of Geography and Environment Science, Northwest Normal University, Lanzhou 730000, China |
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Abstract A set of ecological benefit evolution index was established by method of Analytic Hierarchy Process (AHP) based on observation data in the farmland shelterbelts of Minqin oasis. It was found that the ecological benefit of farmland shelterbelts was predominantly determined by wind-defending benefit. Besides, change of temperature and humidity in shelterbelts, and variation of soil organic matter and soil moisture were also the important influencing factors.The wind-defending benefit has close relation with hierarchical structure and porosity of farmland shelterbelts. Results of integrated evaluation indicated that shelterbelts that have proper porosity and whole forest structure can well protect the farmlands in comparison with that have ventilation or tight structure and incomplete forest structure.
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Received: 15 March 2009
Published: 20 May 2010
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2010, Vol. 30 
