干旱区生态环境知识资源中心(Arid): Seasonal Scale Climatic Factors on Grassland Phenology in Arid and Semi-Arid Zones

Arid

DOI	10.3390/land13050653
	Seasonal Scale Climatic Factors on Grassland Phenology in Arid and Semi-Arid Zones
	Dong, Tong; Liu, Jing; Shi, Mingjie; He, Panxing; Li, Ping; Liu, Dahai
通讯作者	Liu, DH
来源期刊	LAND
EISSN	2073-445X
出版年	2024
卷号	13 期号:5
英文摘要	Influenced by climate change, significant alterations in vegetation phenology have been observed globally. Grassland phenology is highly sensitive to climate change. However, research on the variations in grassland phenology and its responses to seasonal climatic changes in arid and semi-arid regions remains scarce. This study, utilizing Solar-Induced Chlorophyll Fluorescence (SIF) data, meteorological station data, and grassland type data, employs trend analysis and time series analysis to explore the trends of seasonal climatic variability and the sensitivity response of grassland phenology in Xinjiang to seasonal climates. The findings reveal the following: (1) The region experiences more pronounced warming in winter and spring than in summer and autumn, with ground temperature increments outpacing those of air temperatures. The summer season registers the peak in precipitation volume and rate of increase, where mountainous zones accrue more rainfall compared to basins and plains. The distribution of sunshine duration is characterized by higher values in eastern areas than in the west and more in the plains than in mountainous regions, potentially due to escalating cloudiness, which has contributed to a diminishing trend in sunshine hours across Xinjiang over the past 20 years. (2) Over the past two decades, the perennial greening phase of Xinjiang grasslands has predominantly occurred in early May, showing an overall trend of occurring earlier by approximately 5.47 days per decade, while the yellowing phase mainly occurs at the end of September and the beginning of October, demonstrating a delaying trend (6.61 days/decade). The average length of the growing season is 145 days, generally showing a slightly increasing trend (11.97 days/decade). (3) In spring, the rise in air and ground temperatures, along with increased sunshine duration, all promote grassland growth, leading to an earlier greening phase. Conversely, in autumn, increases in air temperature, ground temperature, and sunshine duration can inhibit grassland growth, resulting in an earlier yellowing phase. Increased precipitation in summer and autumn can delay the yellowing phase and extend the length of the grassland growing season. This research provides new insights into the factors influencing large-scale grassland phenology and offers references for grassland adaptation to future climate changes.
英文关键词	phenology grassland seasonal climate Xinjiang
类型	Article
语种	英语
开放获取类型	gold
收录类别	SSCI
WOS记录号	WOS:001232225300001
WOS关键词	INDUCED CHLOROPHYLL FLUORESCENCE ; LAND-SURFACE PHENOLOGY ; SPATIOTEMPORAL VARIATION ; NORTHERN XINJIANG ; SPRING PHENOLOGY ; AIR-TEMPERATURE ; DRIVING FACTORS ; COLD-SEASON ; TIME-SERIES ; DATA SET
WOS类目	Environmental Studies
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/2XILL650/404799
推荐引用方式 GB/T 7714	Dong, Tong,Liu, Jing,Shi, Mingjie,et al. Seasonal Scale Climatic Factors on Grassland Phenology in Arid and Semi-Arid Zones[J],2024,13(5).
APA	Dong, Tong,Liu, Jing,Shi, Mingjie,He, Panxing,Li, Ping,&Liu, Dahai.(2024).Seasonal Scale Climatic Factors on Grassland Phenology in Arid and Semi-Arid Zones.LAND,13(5).
MLA	Dong, Tong,et al."Seasonal Scale Climatic Factors on Grassland Phenology in Arid and Semi-Arid Zones".LAND 13.5(2024).