干旱区生态环境知识资源中心(Arid): Spatiotemporal patterns, sustainability, and primary drivers of NDVI-derived vegetation dynamics (2003-2022) in Nepal

Arid

DOI	10.1007/s10661-024-12754-4
	Spatiotemporal patterns, sustainability, and primary drivers of NDVI-derived vegetation dynamics (2003-2022) in Nepal
	Shrestha, Bhaskar; Zhang, Lifu; Shrestha, Sanjeevan; Khadka, Nitesh; Maharjan, Linda
通讯作者	Zhang, LF
来源期刊	ENVIRONMENTAL MONITORING AND ASSESSMENT
ISSN	0167-6369
EISSN	1573-2959
出版年	2024
卷号	196 期号:7
英文摘要	Understanding the vegetation dynamics and their drivers in Nepal has significant scientific reference value for implementing sustainable ecological policies. This study provides a comprehensive analysis of the spatio-temporal variations in vegetation cover in Nepal from 2003 to 2022 using MODIS NDVI data and explores the effects of climatic factors and anthropogenic activities on vegetation. Mann-Kendall test was used to assess the significant trend in NDVI and was integrated with the Hurst exponent to predict future trends. The driving factors of NDVI dynamics were analyzed using Pearson's correlation, partial derivative, and residual analysis methods. The results indicate that over the last 20 years, Nepal has experienced an increasing trend in NDVI at 0.0013 year(-1), with 80% of the surface area (vegetation cover) showing an increasing vegetation trend (similar to 28% with a significant increase in vegetation). Temperature influenced vegetation dynamics in the higher elevation areas, while precipitation and human interventions influenced the lower elevation areas. The Hurst exponent analysis predicts an improvement in the vegetation cover (greening) for a larger area compared to vegetation degradation (browning). A significantly increased area of NDVI residuals indicates a positive anthropogenic influence on vegetation cover. Anthropogenic activities have a higher relative contribution to NDVI variation followed by temperature and then precipitation. The results of residual trend and Hurst analysis in different regions of Nepal help identify degraded areas, both in the present and future. This information can assist relevant authorities in implementing appropriate policies for a sustainable ecological environment.
英文关键词	Remote sensing NDVI Hurst exponent Residual trend analysis Nepal
类型	Article
语种	英语
收录类别	SCI-E
WOS记录号	WOS:001243822700003
WOS关键词	COMMUNITY FORESTRY ; LAND DEGRADATION ; CLIMATE-CHANGE ; TREND ANALYSIS ; COVER CHANGE ; VARIABILITY ; PRECIPITATION ; RAINFALL ; DESERTIFICATION ; MANAGEMENT
WOS类目	Environmental Sciences
WOS研究方向	Environmental Sciences & Ecology
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/403604
推荐引用方式 GB/T 7714	Shrestha, Bhaskar,Zhang, Lifu,Shrestha, Sanjeevan,et al. Spatiotemporal patterns, sustainability, and primary drivers of NDVI-derived vegetation dynamics (2003-2022) in Nepal[J],2024,196(7).
APA	Shrestha, Bhaskar,Zhang, Lifu,Shrestha, Sanjeevan,Khadka, Nitesh,&Maharjan, Linda.(2024).Spatiotemporal patterns, sustainability, and primary drivers of NDVI-derived vegetation dynamics (2003-2022) in Nepal.ENVIRONMENTAL MONITORING AND ASSESSMENT,196(7).
MLA	Shrestha, Bhaskar,et al."Spatiotemporal patterns, sustainability, and primary drivers of NDVI-derived vegetation dynamics (2003-2022) in Nepal".ENVIRONMENTAL MONITORING AND ASSESSMENT 196.7(2024).