%0 Journal Article %T 2001-2018年贵州省NDVI时空演变及其对气候变化和人类活动的响应 %T Spatio-temporal Variation in NDVI and Its Response to Climate Change and Human Activities in Guizhou Province During 2001-2018 %A 刘阳,周忠发,闫利会 %A Liu Yang %A Zhouzhong Fa %A Yan Lihui %J 水土保持通报 %J 水土保持通报英文版 %@ 1000-288X %V 41 %N 1 %D 2021 %P 327-336 %K NDVI;气候变化;滞后性;人类活动;贵州省 %K normalized difference vegetation index (NDVI);climate change;lag;human activities;Guizhou Province %X [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。 %X [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. %R 10.13961/j.cnki.stbctb.2021.01.044 %U http://stbctb.alljournal.com.cn/stbctb/home %1 JIS Version 3.0.0