Analysis of Growing Season Normalized Difference Vegetation Index Variation and Its Influencing Factors on the Mongolian Plateau Based on Google Earth Engine

被引:7
|
作者
Yan, Yujie [1 ]
Xin, Zhiming [1 ,2 ]
Bai, Xuying [1 ]
Zhan, Hongbin [3 ]
Xi, Jiaju [4 ]
Xie, Jin [5 ]
Cheng, Yiben [1 ]
机构
[1] Beijing Forestry Univ, Sch Soil & Water Conservat, Beijing 100083, Peoples R China
[2] Chinese Acad Forestry, Sand Forestry Expt Ctr, Bayannur 015200, Peoples R China
[3] Texas A&M Univ, Dept Geol & Geophys, College Stn, TX 77843 USA
[4] Space Star Technol Co Ltd, Dept Remote Sensing & Mapping, Beijing 100086, Peoples R China
[5] China Meteorol Adm, Natl Meteorol Ctr, Beijing 100081, Peoples R China
来源
PLANTS-BASEL | 2023年 / 12卷 / 13期
基金
中国国家自然科学基金;
关键词
Mongolian Plateau; desertification; vegetation coverage change; climate change; trend analysis; NDVI; RECHARGE; TREND; WATER;
D O I
10.3390/plants12132550
中图分类号
Q94 [植物学];
学科分类号
071001 ;
摘要
Frequent dust storms on the Mongolian Plateau have adversely affected the ecological environmental quality of East Asia. Studying the dynamic changes in vegetation coverage is one of the important means of evaluating ecological environmental quality in the region. In this study, we used Landsat remote sensing images from 2000 to 2019 on the Mongolian Plateau to extract yearly Normalized Difference Vegetation Index (NDVI) data during the growing season. We used partial correlation analysis and the Hurst index to analyze the spatiotemporal characteristics of the NDVI before and after the establishment of nature reserves and their influencing factors on the GEE cloud platform. The results showed that (1) the proportion of the region with an upwards trend of NDVI increased from 52.21% during 2000-2009 to 67.93% during 2010-2019, indicating a clear improvement in vegetation due to increased precipitation; (2) the increase in precipitation and positive human activities drove the increase in the NDVI in the study region from 2000 to 2019; and (3) the overall trend of the NDVI in the future is expected to be stable with a slight decrease, and restoration potential is greater for water bodies and grasslands. Therefore, it is imperative to strengthen positive human activities to safeguard vegetation. These findings furnish scientific evidence for environmental management and the development of ecological engineering initiatives on the Mongolian Plateau.
引用
收藏
页数:17
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