Research on NDVI Spatial Variation of Cities and Region in Temperate Zone of China Based on Dryness and Humidity Regularity
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    Abstract:

    [Objective] To explore zonal regularity of ecological differences among different cities and regions in temperate zone of China and to discover the significance exerted on the development of urban green construction.[Methods] By employing the 250 m resolution data offered by NDVI MODIS remote sensing image and with the aid of the maximum synthesis method and Gauss's function fitting method, the study intended to explore zonal regularity of urban areas and regional ecological differences in temperate regions of China in terms of vegetation normalization index(NDVI), which covered Linyi, Xuchang, Baiyin, Turpan and Karamay 5 typical cities in China from east to west.[Results] Viewed from the humid region transition to the hyper-arid region, the change of urban and regional NDVI index presented a "U" type to wave type to "inverted U" changes regulations from center city to the <10 km edge and. However, because these cities rely on oasis in the arid area and hyper-arid region, NDVI index can be expressed as "M" type. In conclusion, the study demonstrated that NDVI index presented a convergence trend in different regions of the city, whereas, it can be effectively improved the city NDVI index by strengthening urban ecological construction artificially.[Conclusion] When NDVI index of a city is the "U" type,the urban green arrangement should be arranged with dot and line as the main part. When NDVI index of a city is the "inverted U" type,the city green arrangement should be arranged with several rings as the main part.

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张雅倩,马俊杰.基于干湿度规律的中国温带城市与区域NDVI空间变化研究[J].水土保持通报英文版,2017,37(3):210-215,221

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History
  • Received:December 29,2016
  • Revised:February 22,2017
  • Adopted:
  • Online: July 11,2017
  • Published: