| 陕西吴起县植被盖度变化及其影响因素研究 |
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| 引用本文： | 李楠,韩海荣,张学霞. 陕西吴起县植被盖度变化及其影响因素研究[J]. 干旱区资源与环境, 2009, 23(6): 114-119 |
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| 作者姓名： | 李楠 韩海荣 张学霞 |
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| 作者单位： | 北京林业大学省部共建森林培育与保护教育部重点实验室,北京,100083;北京林业大学水土保持学院,北京,100083 |
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| 基金项目： | 国家科技支撑计划(2006BAD20B06)资助 |
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| 摘 要： | 植被是生态系统中的重要组成部分,植被盖度的高低与全球气候和国家长远的经济效益密切相关。文中采用主成分分析法对吴起县的植被盖度变化与影响因子关系进行分析,分别提取了四个主成分,并用Pearson相关系数法将植被盖度和四个主成分进行相关性分析。结果表明:影响因子与植被盖度之间的相关性与吴起县的半干旱大陆性气候特点和人为种植抚育林草的积极作用有关。在今后的发展中,吴起县应继续提高林草建设质量,强化林草管护,在巩固扩大退耕还林成果的同时,促使生态优势向经济优势转化。
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| 关 键 词： | 植被盖度 主成分分析 Pearson相关系数 |
Research on vegetation coverage change and its impact factors in Wuqi Country,Shaanxi Province |
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| LI Nan,HAN Hairong,ZHANG Xuexia. Research on vegetation coverage change and its impact factors in Wuqi Country,Shaanxi Province[J]. Journal of Arid Land Resources and Environment, 2009, 23(6): 114-119 |
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| Authors: | LI Nan HAN Hairong ZHANG Xuexia |
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| Affiliation: | 1.The Key Laboratory for Silviculture and Conservation;Ministry of Education;Beijing Forestry University;P.R.China;2.School of Soil and Water Conservation;Beijing 100083;P.R.China |
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| Abstract: | As an important part of the ecosystem,vegetation is closely related to the global climate and long-term economic benefits of the country.In this study,principal component analysis was used to analyze the vegetation coverage change and its impact factors in Wuqi Country.Correlations between vegetation coverage change and four extracted principal components were analyzed by Pearson's correlation coefficient method.The result showed that correlations between vegetation coverage change and its impact factors we... |
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| Keywords: | vegetation coverage Principal Component Analysis Pearson's correlation coefficient |
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