Spatio-temporal Variation in NDVI and Its Response to Climate Change and Human Activities in Guizhou Province During 2001-2018

Liu Yang; Zhouzhong Fa; Yan Lihui

doi:10.13961/j.cnki.stbctb.2021.01.044

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Spatio-temporal Variation in NDVI and Its Response to Climate Change and Human Activities in Guizhou Province During 2001-2018

- Spatio-temporal Variation in NDVI and Its Response to Climate Change and Human Activities in Guizhou Province During 2001-2018
- Bulletin of Soiland Water Conservation Vol. 41, Issue 1, Pages: 327-336(2021)
- 作者机构：
  
  1. 贵州师范大学喀斯特研究院/地理与环境科学学院,贵阳,550001
  2. 贵州省喀斯特山地生态环境国家重点实验室培育基地,贵阳,550001
  3. 国家喀斯特石漠化防治工程技术研究中心,贵阳,550001
- 作者简介：
- 基金信息：
- DOI：10.13961/j.cnki.stbctb.2021.01.044
  CLC： Q948
- Published：2021
- 稿件说明：
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Liu Yang, Zhouzhong Fa, Yan Lihui. Spatio-temporal Variation in NDVI and Its Response to Climate Change and Human Activities in Guizhou Province During 2001-2018[J]. Bulletin of Soiland Water Conservation, 2021, 41(1): 327-336.
DOI：

Liu Yang, Zhouzhong Fa, Yan Lihui. Spatio-temporal Variation in NDVI and Its Response to Climate Change and Human Activities in Guizhou Province During 2001-2018[J]. Bulletin of Soiland Water Conservation, 2021, 41(1): 327-336. DOI： 10.13961/j.cnki.stbctb.2021.01.044.

摘要

[目的] 研究贵州省植被覆盖对气候变化和人类活动的响应程度，为区域生态环境建设提供理论依据。[方法] 选取2001-2018年MODIS13 A1影像，结合气象数据，利用线性趋势分析、偏相关分析和残差分析等方法，分析了贵州省18年间NDVI的时空变化特征，探究了NDVI对气候变化的响应规律以及人类活动对NDVI的影响。[结果] ①2001-2018年贵州省NDVI呈现显著上升趋势，增长速率为0.005 3/a，空间上极显著增加和显著增加区域面积分别占研究区域的52.80%和16.80%。②2001-2018年贵州省气候向暖湿方向发展，NDVI与气温和降水呈正相关关系，且NDVI对气温的敏感性高于降水。③月尺度上NDVI对气温的响应不存在滞后性，对降水响应存在一个月滞后性；NDVI与气候月尺度相关性高于年尺度。④人类活动对贵州省植被覆盖作用日益增强，对NDVI贡献度为72.30%。[结论] 人类活动对NDVI的影响大于气候变化，贵州省植被变化是气候变化和人类活动共同作用的结果。

Abstract

[Objective] The response of vegetation coverage to climate change and human activities in Guizhou Province was studied to provide important guidance for restoring the regional ecological environment.[Methods] Based on MODIS13 A1 data and meteorological data

the spatio-temporal variation in the normalized difference vegetation index (NDVI) during 2001-2018 in Guizhou Province was analyzed. Moreover

the impact of climate change and human activities on the NDVI was explored with linear trend analysis

partial correlation

and residual methods.[Results] ① The NDVI showed a significant upward trend at a growth rate of 0.005 3 per year in Guizhou Province during 2001-2018. In the space studied

the extremely significant and the significant improvement areas accounted for 52.80% and 16.80% of the study area

respectively. ② The climate showed a process of distinct warming and increasing humidity in Guizhou Province during 2001-2018. The NDVI was positively correlated with temperature and precipitation

and the NDVI was more sensitive to temperature than to precipitation. ③ There was no lag in the response of NDVI changes to temperature on a monthly scale

but there was a one-month lag in the response to precipitation. The correlation between the NDVI and climate change on a monthly scale was higher than that on an annual scale. ④ The effect of human activities on vegetation coverage was increasing in Guizhou Province

and the contribution to the NDVI was 72.30%.[Conclusion] The impact of human activities on the NDVI was greater than that of climate change. The spatio-temporal variation in the NDVI was the result of the combined effects of climate change and human activities in Guizhou Province.

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