[1]张 岳,孙梦鑫,辛 宇,等.2000-2020年川东地区植被NDVI变化趋势及影响因素分析[J].水土保持研究,2023,30(06):247-254,263.[doi:10.13869/j.cnki.rswc.2023.06.012]
　Zhang Yue,Sun Mengxin,Xin Yu,et al.Trend and Influencing Factors of Vegetation NDVI in Eastern Sichuan from 2000 to 2020[J].Research of Soil and Water Conservation,2023,30(06):247-254,263.[doi:10.13869/j.cnki.rswc.2023.06.012]
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2000-2020年川东地区植被NDVI变化趋势及影响因素分析

《水土保持研究》[ISSN:1005-3409/CN:61-1272/P] 卷: 30 期数: 2023年06期 页码: 247-254,263 栏目: 出版日期: 2023-10-10
Title:
Trend and Influencing Factors of Vegetation NDVI in Eastern Sichuan from 2000 to 2020
文章编号:
1005-3409(2023)06-0247-08
作者:
张 岳1,2, 孙梦鑫1,2, 辛 宇1,2, 杨存建1,2
(1.四川师范大学 西南土地资源评价与监测教育部重点实验室, 成都 610068; 2.四川师范大学 地理与资源科学学院, 成都 610068)
Author(s):
Zhang Yue1,2, Sun Mengxin1,2, Xin Yu1,2, Yang Cunjian1,2
(1.Key Laboratory of Evaluation and Monitoring of Southwest Land Resources, Ministry of Education, Sichuan Normal University, Chengdu 610068, China; 2.College of Geography and Resource Science, Sichuan Normal University, Chengdu 610068, China)
关键词:
NDVI;  川东地区;  残差分析;  气候变化;  人类活动
Keywords:
NDVI;  eastern Sichuan;  residual analysis;  climate change;  human activities
分类号:
Q948.112
DOI:
10.13869/j.cnki.rswc.2023.06.012
文献标志码:
A
摘要:
[目的]探究川东地区植被空间分布与时空变化特征,揭示影响植被变化的主要因素和具体范围,进而为该地区生态文明建设与高质量发展提供科技支撑。[方法]基于MODIS-NDVI数据与地面气象站点数据,利用趋势分析、偏相关系数和残差分析等方法探究了川东地区植被覆盖变化趋势与影响因素间的关系。[结果](1)2000—2020年川东地区植被NDVI呈“东北高西南低”的分布格局,植被覆盖整体呈上升趋势,并具有明显阶段特征。21 a来川东地区大部分区域植被覆盖明显改善,局部地区植被退化严重。(2)气候变化与人类活动对植被NDVI均起促进作用,两者对植被影响区域有所差异,并且人类活动对植被影响更加显著。(3)2000—2020年川东地区植被NDVI与气温和降水呈正相关,且气温因子影响更为显著,但通过0.05显著性检验区域面积较小,表明植被变化主要受非气候因素影响。(4)人类活动对植被影响具有两面性,一方面城镇化导致植被NDVI下降,另一方面通过林业生态工程实施,林、草地植被恢复明显。[结论]川东地区植被整体上得到有效恢复,其变化主要受人类活动因素影响,对影响因素的研究有助于为生态环境保护与可持续发展提供理论支撑。
Abstract:
[Objective] The aim of this study is to explore the characteristics of spatial distribution and spatiotemporal changes of vegetation in the eastern Sichuan region, to reveal the main factors affecting the changes of vegetation and the specific scope, and thus to provide scientific and technological support for the construction of ecological civilization and high-quality development in this region. [Methods] Based on MODIS-NDVI data and ground meteorological station data, the relationship between the trend of vegetation cover change and the influencing factors in eastern Sichuan was explored using trend analysis, partial correlation coefficient and residual analysis. [Results](1)From 2000 to 2020, the NDVI of the vegetation in the eastern part of Sichuan Province showed the distribution pattern of high level in the northeast and low level in the southwest, and the overall vegetation cover showed the upward trend, with obvious stage characteristics. Over the past 21 years, the vegetation cover in most areas of the eastern Sichuan region had significantly improved, and localized vegetation degradation had been serious.(2)Both climate change and human activities contributed to vegetation NDVI, with differences in the areas of influence on vegetation and more significant effects of human activities on vegetation.(3)From 2000 to 2020, vegetation NDVI in eastern Sichuan was positively correlated with temperature and precipitation, and the effect of temperature factor was more significant, but the area of the region passing the 0.05 significance test was smaller, indicating that vegetation changes were mainly influenced by non-climatic factors.(4)The impact of human activities on vegetation had two aspects, on the one hand, urbanization led to the decline of vegetation NDVI, on the other hand, through the implementation of forestry ecological projects, forest and grassland vegetation recovery was obvious. [Conclusion] The vegetation cover of the east Sichuan area had been effectively restored as a whole, and its changes were mainly influenced by human activity factors. The study of the influencing factors can help provide theoretical support for ecological environmental protection and sustainable development.

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备注/Memo

收稿日期:2022-09-19 修回日期:2022-10-07
资助项目:四川省科技厅重点研发项目(2020YFG0146); 四川省自然资源厅项目(KJ-2021-4)
第一作者:张岳(1997—),男,四川仪陇人,硕士研究生,研究方向为遥感技术与应用。E-mail:2374733021@qq.com
通信作者:杨存建(1967—),男,四川成都人,博士,教授,主要从事遥感地学分析与应用研究。E-mail:yangcj2008@126.com

更新日期/Last Update: 2023-10-10