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Relating temperature trends to the normalized difference vegetation index in Las Vegas

机译：将温度趋势与拉斯维加斯的归一化差异植被指数相关

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摘要

This research examines the relation between temperature trends and vegetation change in Las Vegas. A temperature time series is modeled as a superposition of a linear trend and an annual cycle. The model is used to estimate the multi-annual temperature rate of change, which is related to changes in vegetation cover. The change in vegetation cover is estimated using an annual average normalized difference vegetation index (NDVI). The model reveals a general trend of decreasing temperature in Las Vegas from 2000 to 2010. This decrease is less than 0.2 Kelvin per year (K/yr) in older housing developments; however, areas developed during the past decade (North Las Vegas and Southern Highlands) exhibit a decrease of greater than 0.2 K/yr. This temperature change has a correlation of -0.655 with changes in the annual average NDVI. Results reveal that in an arid environment, new housing developments that have an increase in vegetation have a cooling affect. The long-term trend reveals a warming trend. This research provides a useful insight into the effect of NDVI on temperature trends in Las Vegas.
机译：这项研究探讨了拉斯维加斯温度趋势与植被变化之间的关系。温度时间序列建模为线性趋势和年周期的叠加。该模型用于估算多年期温度变化率，这与植被覆盖率的变化有关。使用年平均归一化植被指数（NDVI）估算植被的变化。该模型揭示了从2000年到2010年拉斯维加斯温度总体下降的趋势。在较旧的住房开发中，这种下降每年少于0.2开尔文（K / yr）。但是，过去十年中开发的区域（北拉斯维加斯和南部高地）的下降幅度大于0.2 K / yr。该温度变化与年平均NDVI的变化具有-0.655的相关性。结果表明，在干旱的环境中，植被增加的新住房开发会产生降温影响。长期趋势显示出升温趋势。这项研究为NDVI对拉斯维加斯温度趋势的影响提供了有用的见解。

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  • 来源
    《GIScience & remote sensing》 |2014年第4期|468-482|共15页
  • 作者

    Adam Black; Haroon Stephen;

  • 作者单位

    Department of Civil and Environmental Engineering and Construction, University of Nevada Las Vegas, 4505 Maryland Parkway, MS 4015, Las Vegas, NV 89154, USA;

    Department of Civil and Environmental Engineering and Construction, University of Nevada Las Vegas, 4505 Maryland Parkway, MS 4015, Las Vegas, NV 89154, USA;

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  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

    temperature trends; NDVI; Las Vegas; Landsat; urban change;

    机译：温度趋势;NDVI;拉斯维加斯;陆地卫星城市变迁;

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