西安市空氣质量研究论文.docVIP

下载本文档

20
0
约1.45万字
约 33页
2017-01-17 发布于重庆
举报
版权申诉

西安市空氣质量研究论文.doc

1、有哪些信誉好的足球投注网站（book118）网站文档一经付费（服务费），不意味着购买了该文档的版权，仅供个人/单位学习、研究之用，不得用于商业用途，未经授权，严禁复制、发行、汇编、翻译或者网络传播等，侵权必究。。
2、本站所有内容均由合作方或网友上传，本站不对文档的完整性、权威性及其观点立场正确性做任何保证或承诺！文档内容仅供研究参考，付费前请自行鉴别。如您付费，意味着您自己接受本站规则且自行承担风险，本站不退款、不进行额外附加服务；查看《如何避免下载的几个坑》。如果您已付费下载过本站文档，您可以点击这里二次下载。
3、如文档侵犯商业秘密、侵犯著作权、侵犯人身权等，请点击“版权申诉”（推荐），也可以打举报电话：400-050-0827(电话支持时间：9:00-18:30)。
4、该文档为VIP文档，如果想要下载，成为VIP会员后，下载免费。
5、成为VIP后，下载本文档将扣除1次下载权益。下载后，不支持退款、换文档。如有疑问请联系我们。
6、成为VIP后，您将拥有八大权益，权益包括：VIP文档下载权益、阅读免打扰、文档格式转换、高级专利检索、专属身份标志、高级客服、多端互通、版权登记。
7、VIP文档为合作方或网友上传，每下载1次，网站将根据用户上传文档的质量评分、类型等，对文档贡献者给予高额补贴、流量扶持。如果你也想贡献VIP文档。上传文档

西安市空氣质量研究论文

摘要本文对天西安市的空气质量进行了深入的研究。运用综合指数评价法和回归分析等方法对其空气质量进行了分析，综合各种因素建立了以下所述几种模型，并结合统计学方法，利用SPSS软件和EXCEL进行模型的求解。 1、首先对2007-2013年的空气污染指数和空气质量状况进行了分析，采用了综合指数评价法分析了最主要的空气污染物质，并计算出它们的污染指数。分别使用空气污染指数（API）（旧标准）和环境空气质量指数（AQI）对西安市的空气质量进行评价（新标准），并对评价结果进行对比、分析； 2.运用线性相关法，分析了工业污染、民用采暖和扬尘对空气质量不同程度上的影响； 3、分别运用指数平滑法、SPSS回归分析法对西安过去近一个月的主要污染物浓度变化情况进行多种模型拟合分析，对未来2013年月日至月日预测 2.定义符号说明··········································4 3.模型建立··············································5 4.模型求解（API指数法）·································6 5.结果分析··············································8 3.1.2 模型二················································8 1.模型假设 ·············································8 2.定义符号说明··········································9 3.模型建立··············································9 4.模型求解（AQI指数法）·································9 5.结果分析·············································10 3.2 问题二····················································11 3.2.1 工业污染因素分析·······································11 3.2.2 民用采暖因素分析·······································14 3.2.3 扬尘因素分析···········································15 3.2.4 主要影响因素总结分析···································15 3.3 问题三····················································16 3.3.1 模型一················································16 1.模型假设 ············································16 2.定义符号说明·········································16 3.模型建立·············································16 4.模型求解·············································17 3.3.2 模型二················································19 1.模型假设 ············································19 2.定义符号说明·········································20 3.模型建立···········································