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

ZHANG Yaqian; MA Junjie

doi:10.13961/j.cnki.stbctb.2017.03.035

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

- Research on NDVI Spatial Variation of Cities and Region in Temperate Zone of China Based on Dryness and Humidity Regularity
- Bulletin of Soiland Water Conservation Vol. 37, Issue 3, Pages: 210-215(2017)
- 作者机构：
  
  西北大学城市与环境学院,陕西,西安,710127
- 作者简介：
- 基金信息：
- DOI：10.13961/j.cnki.stbctb.2017.03.035
  CLC：
- Published：2017
- 稿件说明：
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ZHANG Yaqian, MA Junjie. Research on NDVI Spatial Variation of Cities and Region in Temperate Zone of China Based on Dryness and Humidity Regularity[J]. Bulletin of Soiland Water Conservation, 2017, 37(3): 210-215.
DOI：

ZHANG Yaqian, MA Junjie. Research on NDVI Spatial Variation of Cities and Region in Temperate Zone of China Based on Dryness and Humidity Regularity[J]. Bulletin of Soiland Water Conservation, 2017, 37(3): 210-215. DOI： 10.13961/j.cnki.stbctb.2017.03.035.

摘要

[目的] 探索中国温带地区城市与区域生态差异的地带性规律，为不同区域城市生态建设提供重要依据。[方法] 利用250 m空间分辨率MODIS NDVI遥感影像数据，采用最大合成法和高斯函数拟合方法，选择中国从东部到西部的临沂、许昌、白银、吐鲁番和克拉玛依5个典型地级城市的植被归一化指数（NDVI），去探索中国温带地区城市与区域生态差异的地带性规律。[结果] 从城市中心到边缘10 km范围内，由湿润区到极干旱区域，城市与区域NDVI指数的变化呈现由"U"型-波浪型-"倒U型"的变化规律，但干旱区与极干旱地区由于依托绿洲建设城市，其NDVI指数可表现为"花M型"；不同地带城市内部的NDVI指数有趋同现象，但人为强化城市生态建设，可有效提高城市NDVI指数。[结论] 按照不同地域城市与周边区域的NDVI关系，在城市与周边区域NDVI呈"U型"的城市，应以楔入式引入型生态建设为主体，在"倒U型"的城市，应以圈层式防护型生态建设为主体。

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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references

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