Change of Vegetation NDVI with Altitude and Its Climatic Response in Taiwan Province

Lin Rizhi; Zhong Liang; Liu Xiaosheng

doi:10.13961/j.cnki.stbctb.2020.01.044

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Change of Vegetation NDVI with Altitude and Its Climatic Response in Taiwan Province

- Change of Vegetation NDVI with Altitude and Its Climatic Response in Taiwan Province
- Bulletin of Soiland Water Conservation Vol. 40, Issue 1, Pages: 304-310(2020)
- 作者机构：
  
  江西理工大学建筑与测绘工程学院,江西,赣州,341000
- 作者简介：
- 基金信息：
- DOI：10.13961/j.cnki.stbctb.2020.01.044
  CLC： Q948;S157.2
- Published：2020
- 稿件说明：
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Lin Rizhi, Zhong Liang, Liu Xiaosheng. Change of Vegetation NDVI with Altitude and Its Climatic Response in Taiwan Province[J]. Bulletin of Soiland Water Conservation, 2020, 40(1): 304-310.
DOI：

Lin Rizhi, Zhong Liang, Liu Xiaosheng. Change of Vegetation NDVI with Altitude and Its Climatic Response in Taiwan Province[J]. Bulletin of Soiland Water Conservation, 2020, 40(1): 304-310. DOI： 10.13961/j.cnki.stbctb.2020.01.044.

摘要

[目的] 揭示台湾省陆地植被生态系统随海拔高度的变化趋势及其响应程度，为区域可持续发展、生态环境保护提供理论依据。[方法] 基于台湾省1998-2018年SPOT/VEGETATION NDVI卫星遥感数据、气象及DEM数据，结合相关分析法、回归分析法等数理统计方法，对气候变化下的台湾省植被归一化植被指数（NDVI）变化趋势及区域响应进行了分析。[结果] 1998-2018年台湾省植被NDVI均值增长率为5.09%；台湾省不同高程范围所占的面积比例差异较大，<500 m区域的面积比例高达52.49%，>3 600 m区域的面积比例仅为0.01%，且NDVI均呈现较低值，分别为0.72和0.73；1998-2018年台湾省海拔除>3 600 m外，其他海拔高程范围NDVI均值增长明显（p<0.001）；在500~3 600 m高程范围内，NDVI年均值与气温、降雨相关关系显著（p<0.05）。[结论] 海拔越高，植被生长状况对降雨的变化较气温更为敏感。

Abstract

[Objective] To provide a theoretical basis for regional sustainable development and ecological environmental protection

the changing trend with altitude of Taiwan's terrestrial vegetation ecosystem and its response to climatic were investigated.[Methods] Based on SPOT/VEGETATION NDVI satellite remote sensing data

meteorological

and digital elevation model (DEM) data from 1998-2018

we combined a regression analysis and correlation analysis to assess the normalized difference vegetation index(NDVI) trend and regional response of vegetation in Taiwan Province under climate change.[Results] The average growth rate of NDVI of vegetation in Taiwan Province from 1998 to 2018 was 5.09%; The proportion of area occupied by different elevation ranges in Taiwan Province was quite different

the area proportion <500 m area was as high as 52.49%

the area proportion >3 600 m area was only 0.01%

and NDVI in the two altitude ranges showed lower values

0.72 and 0.73; From 1998 to 2018

except for the altitude of >3 600 m

the mean value of NDVI in other altitude ranges increased significantly (p<0.001). In the elevation range of 500-3 600 m

the annual mean of NDVI was significantly correlated with temperature and rainfall (p<0.05).[Conclusion] The higher the altitude

the more sensitive is the growth of vegetation to the change of rainfall as compared to the change of temperature.

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references

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