干旱区生态环境知识资源中心(Arid): Effect of climate and ecological restoration on vegetation changes in the Three-River Headwaters region based on remote sensing technology

Arid

DOI	10.1007/s11356-021-16927-3
	Effect of climate and ecological restoration on vegetation changes in the Three-River Headwaters region based on remote sensing technology
	Guo, Biyun; Wang, Jushang; Mantravadi, Venkata Subrahmanyam; Zhang, Li; Liu, Guangzhe
通讯作者	Guo, BY ; Mantravadi, VS (corresponding author), Zhejiang Ocean Univ, Sch Marine Sci & Technol, Zhoushan 316022, Zhejiang, Peoples R China. ; Guo, BY (corresponding author), Qinghai Univ, State Key Lab Plateau Ecol & Agr, Xining 810016, Qinghai, Peoples R China.
来源期刊	ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
ISSN	0944-1344
EISSN	1614-7499
出版年	2022
英文摘要	Surface temperature and precipitation are factors effecting vegetation growth. Vegetation coverage change is one of the important factors influencing global and regional climate change. Dynamic monitoring of vegetation change can reflect the trend of climate change to a certain extent. Three-River Headwaters are located in the hinterland of the Qinghai-Tibet Plateau. It has the characteristics of high, cold, and dry (higher altitude, cold and dry weather) and its ecosystem is fragile. In recent years, with the global climate change, a series of eco-environmental problems such as river flow cutoff, permafrost degradation, and vegetation destruction has occurred in the headwaters area, which are closely related to climate and vegetation changes. At the same time, in order to solve the problem of ecological environment degradation in the region, various ecological restoration policies have implemented. Several uncertainties in the relationship between vegetation and climate change in the Three-River Headwaters region. This study aims to find out the uncertainties. In this study, the spatial distribution of vegetation coverage was calculated by using NDVI (normalized difference vegetation index) from the first-level product of MODIS (moderate resolution imaging spectroradiometer) remote sensing data. Combining policy factors, the relationship between rainfall, surface temperature, and vegetation growth status were analyzed. The results show that during the study period (1948-2019), the temperature rose significantly and the rainfall increased especially after the implementation of ecological restoration policy (after 2000). Vegetation coverage increased year-by-year (2000-2015). The rainfall effect on surface temperature and vegetation growth, when the summer rainfall increased, the temperature decreased, leads to vegetation coverage decreased (for example, 2001, 2003, 2008 and 2011); the dependence of vegetation on rainfall has obvious lag in Three-River Headwaters in summer. In the years with suitable rainfall and higher temperature in summer, the vegetation grows better and the vegetation coverage increases. This is mainly because the Three-River Headwaters is located in the alpine zone, and vegetation growth is more dependent on temperature. The implementation of ecological restoration policy promotes vegetation coverage. Studying the impact of climate and policy factors on vegetation cover is of great scientific significance and practical value for understanding the ecological restoration mechanism in high cold and arid regions.
英文关键词	Three-River Headwaters MODIS NDVI Precipitation Surface temperature Ecological restoration
类型	Article
语种	英语
收录类别	SCI-E
WOS记录号	WOS:000706931000002
WOS关键词	COVER ; LAND ; NDVI ; EVAPOTRANSPIRATION ; PARAMETERS
WOS类目	Environmental Sciences
WOS研究方向	Environmental Sciences & Ecology
来源机构	西北农林科技大学
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/363181
作者单位	[Guo, Biyun; Wang, Jushang; Mantravadi, Venkata Subrahmanyam] Zhejiang Ocean Univ, Sch Marine Sci & Technol, Zhoushan 316022, Zhejiang, Peoples R China; [Guo, Biyun] Qinghai Univ, State Key Lab Plateau Ecol & Agr, Xining 810016, Qinghai, Peoples R China; [Zhang, Li] Huazhong Univ Sci & Technol, Sch Civil & Hydraul Engn, Wuhan 430074, Hubei, Peoples R China; [Liu, Guangzhe] Northwest A&F Univ, Coll Forestry, Yangling 712100, Shaanxi, Peoples R China
推荐引用方式 GB/T 7714	Guo, Biyun,Wang, Jushang,Mantravadi, Venkata Subrahmanyam,et al. Effect of climate and ecological restoration on vegetation changes in the Three-River Headwaters region based on remote sensing technology[J]. 西北农林科技大学,2022.
APA	Guo, Biyun,Wang, Jushang,Mantravadi, Venkata Subrahmanyam,Zhang, Li,&Liu, Guangzhe.(2022).Effect of climate and ecological restoration on vegetation changes in the Three-River Headwaters region based on remote sensing technology.ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH.
MLA	Guo, Biyun,et al."Effect of climate and ecological restoration on vegetation changes in the Three-River Headwaters region based on remote sensing technology".ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH (2022).