干旱区生态环境知识资源中心(Arid): Grassland vegetation phenological variations and responses to climate change in the Xinjiang region, China

Arid

DOI	10.1016/j.quaint.2019.03.010
	Grassland vegetation phenological variations and responses to climate change in the Xinjiang region, China
	Zhang, Renping 1,2; Guo, Jing 3; Liang, Tiangang 2; Feng, Qisheng 2
通讯作者	Zhang, Renping
来源期刊	QUATERNARY INTERNATIONAL
ISSN	1040-6182
EISSN	1873-4553
出版年	2019
卷号	513 页码:56-65
英文摘要	Vegetation phenology is one of the most prominent and sensitive indicators of the responses of terrestrial ecosystems to climate change. To understand and predict the changes in terrestrial ecosystems, it is important to investigate phenological changes. In this study, we investigated vegetation phenology in grasslands in Xinjiang, which is a typical arid and semiarid region in China. We analyzed the spatiotemporal changes in grassland phenology in response to climate change from 2001 to 2014 using the MODIS MCD12Q2-Land Cover Dynamics global phenology product and concurrent meteorological data. The effects of monthly temperature and precipitation on the grassland start of the growing season (SOS) in spring were analyzed with the partial least squares (PLS) method. We found that the MCD12Q2 phenology data could successfully reflect the SOS of the grassland vegetation in Xinjiang. The perennial mean grassland phenology in Xinjiang exhibited significant differences among elevation zones. For each 1000 m increase in the elevation gradient, the SOS was delayed by 13 days. The SOS of the different grassland types in Xinjiang varied from day of year (DOY) 100 to DOY 136, and grassland SOS advanced at a rate of 0.11 d/a. The relative percentage of advanced area (57.5%) was larger than that of delayed area (42.5%), and the percentages of significantly advanced area (4.6%) and significantly delayed area (2.6%) were low. Temperature plays a decisive role in grassland SOS. Warmer temperatures in early spring and lower temperatures and less precipitation in January were more favorable for grassland SOSs in this region than were other temperature and precipitation regimes, and increased precipitation during the early spring had a more favorable effect on grassland SOS in low-altitude areas than in high-altitude areas.
英文关键词	Xinjiang Grassland phenology Spatiotemporal variations Climate change MCD12Q2
类型	Article
语种	英语
国家	Peoples R China
收录类别	SCI-E
WOS记录号	WOS:000469328000007
WOS关键词	NDVI TIME-SERIES ; SPRING PHENOLOGY ; TEMPORAL VARIABILITY ; TRENDS ; AVHRR ; TEMPERATURE ; REGRESSION ; PATTERNS ; LATITUDE ; IMPACTS
WOS类目	Geography, Physical ; Geosciences, Multidisciplinary
WOS研究方向	Physical Geography ; Geology
来源机构	兰州大学 ; 新疆大学
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/218239
作者单位	1.Xinjiang Univ, Key Lab Oasis Ecol, Inst Arid Ecol & Environm, Urumqi 830046, Peoples R China; 2.Lanzhou Univ, Coll Pastoral Agr Sci & Technol, State Key Lab Grassland Agroecosyst, Lanzhou 730020, Gansu, Peoples R China; 3.Xinjiang Acad Forestry, Urumqi 830000, Peoples R China
推荐引用方式 GB/T 7714	Zhang, Renping,Guo, Jing,Liang, Tiangang,et al. Grassland vegetation phenological variations and responses to climate change in the Xinjiang region, China[J]. 兰州大学, 新疆大学,2019,513:56-65.
APA	Zhang, Renping,Guo, Jing,Liang, Tiangang,&Feng, Qisheng.(2019).Grassland vegetation phenological variations and responses to climate change in the Xinjiang region, China.QUATERNARY INTERNATIONAL,513,56-65.
MLA	Zhang, Renping,et al."Grassland vegetation phenological variations and responses to climate change in the Xinjiang region, China".QUATERNARY INTERNATIONAL 513(2019):56-65.