Driving force and changing trends of vegetation phenology in the Loess Plateau of China from 2000 to 2010

CORC > 成都山地灾害与环境研究所 > 中国科学院水利部成都山地灾害与环境研究所 > Journal of Mountain Science > Journal of Mountain Science-2016 > Vol13 No.5

	Driving force and changing trends of vegetation phenology in the Loess Plateau of China from 2000 to 2010
	WANG Hao; LIU Guo-hua; LI Zong-shan; YE Xin; WANG Meng; GONG Li
刊名	Journal of Mountain Science
	2016-05
卷号	13 期号:5 页码:844-856
关键词	The Loess Plateau Trend analysis Phenology NDVI Vegetation green-up date
ISSN号	1672-6316
通讯作者	LIU Guo-hua
英文摘要	Changes in vegetation phenology are key indicators of the response of ecosystems to climate change. Therefore, knowledge of growing seasons is essential to predict ecosystem changes, especially for regions with a fragile ecosystem such as the Loess Plateau. In this study, based on the normalized difference vegetation index (NDVI) data, we estimated and analyzed the vegetation phenology in the Loess Plateau from 2000 to 2010 for the beginning, length, and end of the growing season, measuring changes in trends and their relationship to climatic factors.The results show that for 54.84% of the vegetation, the trend was an advancement of the beginning of the growing season (BGS), while for 67.64% the trend was a delay in the end of the growing season (EGS). The length of the growing season (LGS) was extended for 66.28% of the vegetation in the plateau. While the temperature is important for the vegetation to begin the growing season in this region, warmer climate may lead to drought and can become a limiting factor for vegetation growth. We found that increased precipitation benefits the advancement of the BGS in this area. Areas with a delayed EGS indicated that the appropriate temperature and rainfall in autumn or winter enhanced photosynthesis and extended the growth process. A positive correlation with precipitation was found for 76.53% of the areas with an extended LGS, indicating that precipitation is one of the key factors in changes in the vegetation phenology in this water-limited region. Precipitation plays an important role in determining the phenological activities of the vegetation in arid and semiarid areas, such as the Loess Plateau. The extended growing season will significantly influence both the vegetation productivity and the carbon fixation capacity in this region.
收录类别	SCI
语种	英语
公开日期	2016-05-03
内容类型	期刊论文
源URL	[http://ir.imde.ac.cn/handle/131551/15127]
专题	成都山地灾害与环境研究所_Journal of Mountain Science _Journal of Mountain Science-2016_Vol13 No.5
推荐引用方式 GB/T 7714	WANG Hao,LIU Guo-hua,LI Zong-shan,et al. Driving force and changing trends of vegetation phenology in the Loess Plateau of China from 2000 to 2010[J]. Journal of Mountain Science,2016,13(5):844-856.
APA	WANG Hao,LIU Guo-hua,LI Zong-shan,YE Xin,WANG Meng,&GONG Li.(2016).Driving force and changing trends of vegetation phenology in the Loess Plateau of China from 2000 to 2010.Journal of Mountain Science,13(5),844-856.
MLA	WANG Hao,et al."Driving force and changing trends of vegetation phenology in the Loess Plateau of China from 2000 to 2010".Journal of Mountain Science 13.5(2016):844-856.