| 摘要: |
| [目的]建立合理的陕北黄土高原农村户用沼气区域适宜性评价指标体系,为陕北黄土高原农村户用沼气的建设提供依据.[方法]以延安市为例,应用DPS多元统计软件中提供的主成分分析法,对延安市农村户用沼气区域适宜性进行了综合分析,并用聚类分析方法进行了区域划分.[结果]延安市农村户用沼气区域适宜性综合得分排序结果为:吴旗县(4.927 66)>安塞县(2.593 485)>洛川县(1.087 115)>志丹县(0.104 478)>延川县(-0.423 69)>宜川县(-1.541 01)>黄龙县(-3.539 25);根据聚类分析结果可将其划分为3类:户用沼气适宜区、次适宜区和不适宜区,适宜区包括延川、宜川2个县;次适宜区包括安塞、洛川和吴旗县;不适宜区包括志丹县和黄龙县.[结论]延安市农村户用沼气适宜区和次适宜区范围广阔,有较好的户用沼气适宜性. |
| 关键词: 黄土高原 户用沼气 聚类分析 主成分分析 综合评价值 适宜性评价 |
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| 基金项目:科技部农业科技成果转换项目（2007GB2G000312）；国家自然科学基金项目（30700482）；陕西省科技攻关项目（2005K01-G17-03） |
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| Evaluation on regional suitability of household biogas in the Loess Plateau in North Shaanxi Province-A case study of Yan''an City |
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| Abstract: |
| 【Objective】 The research established rational household biogas regional suitability evaluation index system in the Loess Plateau in North Shaanxi Province,and analyzed regional suitability of biogas in Yan'an City with multivariant statistics to provide a fundamental basis for biogas construction in rural aera.【Method】 A case study of Yan'an City,comprensive analysis was done by principal components analytic method and the regional classification was classified by cluster analytic method.【Result】 The comprehensive sequence of regional suitability of household biogas in the Yan'an City was:Wuqi County(4.927 66)＞Ansai County(2.593 485)＞Luochuan County(1.087 115)＞Zhidan Country(0.104 478)＞Yanchuan Country(－0.423 69)＞Yichuan Country(－1.541 01)＞Huanglong Country(－3.539 25).According to the clustering analysis the 7 countries were divided into 3 regional suitability types:suitable region,fairly suitable region,unsuitable area.Suitable region included Yanchuan Country and Yichuan Country,fairly suitable region Ansai County,Luochuan County and Wuqi County,while Zhidan Country and Huanglong Country belonged to unsuitable area.【Conclusion】 The range of suitable region and fairly suitable region is large with great household biogas regional suitability. |
| Key words: Loess Plateau household biogas cluster analysis principal component analysis comprehensive index evaluation on regional suitability |
