Alpine vegetation phenology dynamic over 16 years and its covariation with climate in a semi-arid region of China

doi:10.1016/j.scitotenv.2016.07.206

	Alpine vegetation phenology dynamic over 16 years and its covariation with climate in a semi-arid region of China
	Zhou, Jihua 1; Cai, Wentao 1; Qin, Yue 2; Lai, Liming ; Guan, Tianyu 1; Zhang, Xiaolong 1; Jiang, Lianhe ; Du, Hui ; Yang, Dawen 2; Cong, Zhentao 2; Zheng, Yuanrun
	2016
发表期刊	SCIENCE OF THE TOTAL ENVIRONMENT
ISSN	0048-9697
卷号	572 页码:119-128
摘要	Vegetation phenology is a sensitive indicator of ecosystem response to climate change, and plays an important role in the terrestrial biosphere. Improving our understanding of alpine vegetation phenology dynamics and the correlation with climate and grazing is crucial for high mountains in arid areas subject to climatic warming. Using a time series of SPOT Normalized Difference Vegetation Index (NDVI) data from 1998 to 2013, the start of the growing season (SOS), end of the growing season (EOS), growing season length (GSL), and maximum NDVI (MNDVI) were extracted using a threshold-based method for six vegetation groups in the Heihe River headwaters. Spatial and temporal patterns of SOS, EOS, GSL, MNDVI, and correlations with climatic factors and livestock production were analyzed. The MNDVI increased significantly in 58% of the study region, whereas SOS, EOS, and GSL changed significantly in <5% of the region. The MNDVI in five vegetation groups increased significantly by a range from 0.045 to 0.075. No significant correlation between SOS and EOS was observed in any vegetation group. The SOS and GSL were highly correlated with temperature in May and April-May, whereas MNDVI was correlated with temperature in August and July-August. The EOS of different vegetation groups was correlated with different climatic variables. Maximum and minimum temperature, accumulated temperature, and effective accumulated temperature showed stronger correlations with phenological metrics compared with those of mean temperature, and should receive greater attention in phenology modeling in the future. Meat and milk production were significantly correlated with the MNDVI of scrub, steppe, and meadow. Although the MNDVI increased in recent years, ongoing monitoring for rangeland degradation is recommended. (C) 2016 Elsevier B.V. All rights reserved.
关键词	Heihe River Phenology Remote sensing Alpine vegetation Normalized Difference Vegetation Index Climate variability
学科领域	Environmental Sciences
DOI	10.1016/j.scitotenv.2016.07.206
收录类别	SCI
语种	英语
WOS关键词	LAND-SURFACE PHENOLOGY ; MOUNTAIN REGIONS ; TIBETAN PLATEAU ; FEEDBACKS ; INDEX ; ECOSYSTEMS ; RESPONSES ; GRADIENT ; FORESTS ; EARTH
WOS研究方向	Science Citation Index Expanded (SCI-EXPANDED)
WOS记录号	WOS:000387807200013
出版者	ELSEVIER SCIENCE BV
文献子类	Article
出版地	AMSTERDAM
EISSN	1879-1026
资助机构	National Natural Science Foundation of ChinaNational Natural Science Foundation of China (NSFC) [91225302]
作者邮箱	zhengyr@ibcas.ac.cn
引用统计	被引频次：72[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	http://ir.ibcas.ac.cn/handle/2S10CLM1/25290
专题	中科院北方资源植物重点实验室
作者单位	1.Chinese Acad Sci, Inst Bot, Key Lab Resource Plants, Beijing Bot Garden,Wes China Subalpine Bot Garden, Beijing 100093, Peoples R China 2.Univ Chinese Acad Sci, Beijing 100049, Peoples R China 3.Tsinghua Univ, Dept Hydraul Engn, State Key Lab Hydrosci & Engn, Beijing 100084, Peoples R China
推荐引用方式 GB/T 7714	Zhou, Jihua,Cai, Wentao,Qin, Yue,et al. Alpine vegetation phenology dynamic over 16 years and its covariation with climate in a semi-arid region of China[J]. SCIENCE OF THE TOTAL ENVIRONMENT,2016,572:119-128.
APA	Zhou, Jihua.,Cai, Wentao.,Qin, Yue.,Lai, Liming.,Guan, Tianyu.,...&Zheng, Yuanrun.(2016).Alpine vegetation phenology dynamic over 16 years and its covariation with climate in a semi-arid region of China.SCIENCE OF THE TOTAL ENVIRONMENT,572,119-128.
MLA	Zhou, Jihua,et al."Alpine vegetation phenology dynamic over 16 years and its covariation with climate in a semi-arid region of China".SCIENCE OF THE TOTAL ENVIRONMENT 572(2016):119-128.

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