| 西藏米拉山区东坡垂直分布土壤肥力综合评价 |
| |
| 引用本文： | 钟国辉,关法春,贺延国.西藏米拉山区东坡垂直分布土壤肥力综合评价[J].土壤通报,2011(3):518-522. |
| |
| 作者姓名： | 钟国辉 关法春 贺延国 |
| |
| 作者单位： | 西藏农牧学院生物技术中心;西藏农牧学院植物科学技术学院;中水东北勘测设计研究有限公司科学研究院; |
| |
| 基金项目： | 国家科技攻关计划重大专项“生态农业技术体系研究与示范”专题“中国森林生态网络体系‘线’的研究与示范(2002BA516A-16)”; 西藏自治区科技厅基金项目“鬼臼毒素两个关键酶基因的克隆”资助 |
| |
| 摘 要： | 针对以往土壤肥力质量综合评价方法存在人为权重赋值误差,以及简便计算等方面的不足的问题,提出了投影寻踪等级评价模型对土壤肥力质量进行综合评价。投影寻踪等级评价模型方法依据标准样本自身的数据特性寻求最佳投影方向,通过最佳投影方向与评价指标的线性投影得到投影指标值,依据投影指标值对样本进行统一评价和分类,并利用最佳投影方向判断各评价指标对综合评价目标的贡献大小。模型日的应用较好地对西藏米拉山区不同海拔土壤肥力质量进行评定,并对单一指标对土壤肥力质量贡献大小进行了分析,其结果将有助于西藏土壤的合理利用,为今后的土地利用分析决策提供重要参考。
|
| 关 键 词： | 投影寻踪 实码加速遗传算法 土壤肥力质量 评价 |
The Application of Projection Pursuit Grade Evaluation Model in the assessment for the Vertical Distributional Soil Fertility Quality on East Slope of Mila Mountains District in Tibet |
| |
| ZHONG Guo-hui a,GUAN Fa-chun b,HE Yan-guo.The Application of Projection Pursuit Grade Evaluation Model in the assessment for the Vertical Distributional Soil Fertility Quality on East Slope of Mila Mountains District in Tibet[J].Chinese Journal of Soil Science,2011(3):518-522. |
| |
| Authors: | ZHONG Guo-hui a GUAN Fa-chun b HE Yan-guo |
| |
| Institution: | ZHONG Guo-hui 1 a,GUAN Fa-chun 1 b,HE Yan-guo 2(1.Tibet Agricultural and Animal Husbandry College,a.Bio-Technology Center,b.Department of plant-science technology,Linzhi,Tibet 860000,China,2.China Water Northeastern Investigation and Design Research Co.Ltd.,Jilin 130061,China) |
| |
| Abstract: | In this study,projection pursuit grade evaluation(or PPE for short) model was applied in soil fertility quality assessment.Comparing with traditional assessments,this method had advantages of efficient simulation and non-human factors.By projecting high dimensional data to low dimensional space and then finding the optimum projection vector of data in one-dimensional space,projection pursuit was an effective method in comprehensive and multi-index evaluation.The projection assessment indices' contributions ... |
| |
| Keywords: | Projection pursuit(PP) Projection pursuit grade evaluation model(PPE) Real Coding Based Accelerating Genetic Algorithm(RAGA) Soil fertility quality Assessment |
| 本文献已被 CNKI 等数据库收录！ |
