水土保持通报2023，Vol.43Issue(6)：412-420,9.DOI:10.13961/j.cnki.stbctb.2023.06.046
气候变化和人类活动对黄河流域砒砂岩区植被覆盖的影响
Effects of Climate Change and Human Activities on Vegetation Coverage in Arsenic Sandstone Area of Yellow River Basin
摘要
Abstract
[Objective]The arsenic sandstone area is the most serious soil erosion area in the Yellow River basin.Vegetation coverage changes and their driving factors were determined in order to provide a scientific reference for vegetation restoration and ecological reconstruction in this area.[Methods]MOD13Q1 NDVI data from 2000 to 2022 were used with the Sen trend,Mann-Kendall significance test,Hurst index,residual analysis,and other methods to determine the temporal and spatial variation trends of vegetation coverage during the study period in the arsenic sandstone area.The response relationships between vegetation coverage and climatic factors and human activities were also determined.[Results]① Vegetation coverage in the arsenic sandstone area increased by 4％/yr(p＜0.05)from 2000 to 2022.Vegetation coverage in the study area exhibited obvious spatial differences in the three study areas,showing the spatial distribution trends of "higher in the south and lower in the north" and "higher in the east and lower in the west".② The area with positive correlations between vegetation coverage and precipitation during the study period accounted for 66.30％ of the total area,and the area with negative correlations accounted for 33.70％ of the total area.The area with positive correlations between vegetative coverage and temperature accounted for 92.19％ of the total area,and the negative correlation area accounted for 7.81％of the total area;③ The residual results showed that human activities in 2000-2011 produced mainly negative effects on vegetative coverage,and human activities in 2012-2022 produced mainly positive effects.[Conclusion]Vegetation coverage in the arsenic sandstone area significantly increased during the study period,and had a higher correlation with annual average temperature than with annual rainfall.A series of ecological protection projects have made significant contributions towards increasing vegetation coverage.关键词
植被覆盖度/气候变化/人类活动/地理探测器/砒砂岩区Key words
vegetation coverage/climate change/human activity/geographic detectors/arsenic sandstone area分类
资源环境引用本文复制引用
盛艳,刘林甫,圆圆,王硕,李娟,安丽..气候变化和人类活动对黄河流域砒砂岩区植被覆盖的影响[J].水土保持通报,2023,43(6):412-420,9.基金项目
内蒙古科技计划项目"黄河流域砒砂岩区抗蚀控沙与脆弱生态系统精准修复技术集成与示范"(2020GG0075) （2020GG0075）
内蒙古自治区"科技兴蒙"行动重点专项"流域生态系统结构和功能演变及其对水沙过程的影响:产业—经济—人文结构变化对区域生态系统影响"(2022EEDSKJXM005-01) （2022EEDSKJXM005-01）
