干旱区生态环境知识资源中心(Arid): Exploring Sensitivity of Phenology to Seasonal Climate Differences in Temperate Grasslands of China Based on Normalized Difference Vegetation Index

Arid

DOI	10.3390/land13030399
	Exploring Sensitivity of Phenology to Seasonal Climate Differences in Temperate Grasslands of China Based on Normalized Difference Vegetation Index
	Wei, Xiaoshuai; Xu, Mingze; Zhao, Hongxian; Liu, Xinyue; Guo, Zifan; Li, Xinhao; Zha, Tianshan
通讯作者	Zha, TS
来源期刊	LAND
EISSN	2073-445X
出版年	2024
卷号	13 期号:3
英文摘要	The affiliation between vegetation phenology and seasonal climate (start and end times of the growing season, or SOS and EOS) provides a basis for acquiring insight into the dynamic response of terrestrial ecosystems to the effects of climate change. Although climate warming is an important factor affecting the advancement or delay of plant phenology, understanding the sensitivity of phenology to seasonal variation in climate factors (e.g., local air temperature, precipitation) is generally lacking under different climate backgrounds. In this study, we investigated the interannual variability of grassland phenology and its spatial variation in temperate regions of China based on satellite-derived products for the normalized difference vegetation index (NDVI) and weather data acquired from 2001 to 2020. We found that due to differences in local climate conditions, the effects of seasonal warming and precipitation on phenology were divergent or even opposite during the 20 years. The sensitivities of the start of growing season (SOS) to both spring temperature and last-winter precipitation was controlled by mean annual precipitation in terms of spatial variation. The SOS in the semi-humid (200-400 mm) region was most sensitive to spring temperature, advancing 5.24 days for each 1 degrees C rise in the average spring temperature (p < 0.05), while it was most sensitive to last-winter precipitation in arid regions (<200 mm), with SOS advancing up to 2.23 days for every 1 mm increase in the last-winter precipitation (p < 0.05). The end of growing season (EOS) was sensitive to autumn temperature, being delayed 10.13 days for each 1 degrees C rise in the average autumn temperature in regions with temperatures between -10 degrees C and -5 degrees C (p < 0.05). The uncertainty in the determination of the EOS could conceivably be greater than the determination of the SOS due to the dual effects of pre-autumn climate and growth constraints induced by declining fall temperatures. The effect of atmospheric warming on grassland phenology was lessened with increased atmospheric and soil aridity, suggesting that the interaction of regional drought and climate warming is an important source for local-to-regional differences and uncertainties in grass phenological response.
英文关键词	climate change grassland phenology NDVI temperate zone
类型	Article
语种	英语
开放获取类型	gold
收录类别	SSCI
WOS记录号	WOS:001193401200001
WOS关键词	GROSS PRIMARY PRODUCTION ; SPRING PHENOLOGY ; NORTHERN-HEMISPHERE ; PLANT PHENOLOGY ; TIBETAN PLATEAU ; CARBON ; PRODUCTIVITY ; WATER ; VARIABILITY ; ECOSYSTEMS
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/2XILL650/404784
推荐引用方式 GB/T 7714	Wei, Xiaoshuai,Xu, Mingze,Zhao, Hongxian,et al. Exploring Sensitivity of Phenology to Seasonal Climate Differences in Temperate Grasslands of China Based on Normalized Difference Vegetation Index[J],2024,13(3).
APA	Wei, Xiaoshuai.,Xu, Mingze.,Zhao, Hongxian.,Liu, Xinyue.,Guo, Zifan.,...&Zha, Tianshan.(2024).Exploring Sensitivity of Phenology to Seasonal Climate Differences in Temperate Grasslands of China Based on Normalized Difference Vegetation Index.LAND,13(3).
MLA	Wei, Xiaoshuai,et al."Exploring Sensitivity of Phenology to Seasonal Climate Differences in Temperate Grasslands of China Based on Normalized Difference Vegetation Index".LAND 13.3(2024).