气候变化领域集成服务门户(CCPortal): Modeling vegetation green-up dates across the Tibetan Plateau by including both seasonal and daily temperature and precipitation

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DOI	10.1016/j.agrformet.2017.11.032
	Modeling vegetation green-up dates across the Tibetan Plateau by including both seasonal and daily temperature and precipitation
	Cao, Ruyin; Shen, Miaogen; Zhou, Ji; Chen, Jin
通讯作者	Cao, RY (通讯作者)
发表日期	2018
ISSN	0168-1923
EISSN	1873-2240
起始页码	176
结束页码	186
卷号	249
英文摘要	Shifts in vegetation phenology induced by climate change are substantially modifying various ecosystem processes, and those changes can in turn affect weather and climate systems. Realistic modeling of spring vegetation green-up is critical to improving process-based ecosystem models of the Tibetan Plateau (TP) and for better understanding of the coupling between TP terrestrial biophysical processes and the Asian monsoon system. However, no model is available for simulating the vegetation green-up date (VGD) across the entire TP. In this study, we first assessed the ability of several existing state-of-the-art phenological models to estimate VGD across the TP. We then modified the existing models by adding environmental constraints identified by partial least squares analyses. The modified models simulated VGDs with lower estimation errors than other models (Mean absolute error: 8.2 days vs. 8.7-12.9 days; P < 0.01, t-test). Moreover, although our model captured the inter annual variations in VGD better than any previous model, the correlation coefficient between predicted and remotely sensed VGDs was still low, especially in the western TP. This study revealed the necessity of considering multiple factors in VGD models and highlighted the challenge of developing models that will better represent phenology in future ecosystem models.
关键词	LAND-SURFACE PHENOLOGY RECENT CLIMATE-CHANGE SPRING PHENOLOGY MODIS RESPONSES TREES FOREST PATTERNS BUDBURST SNOWFALL
英文关键词	Alpine vegetation; Asymmetric warming; Daytime mean temperature; Phenological model; Remotely sensed phenology; Start of growing season
语种	英语
WOS研究方向	Agriculture ; Forestry ; Meteorology & Atmospheric Sciences
WOS类目	Agronomy ; Forestry ; Meteorology & Atmospheric Sciences
WOS记录号	WOS:000424180100015
来源期刊	AGRICULTURAL AND FOREST METEOROLOGY
来源机构	中国科学院青藏高原研究所
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/259217
推荐引用方式 GB/T 7714	Cao, Ruyin,Shen, Miaogen,Zhou, Ji,et al. Modeling vegetation green-up dates across the Tibetan Plateau by including both seasonal and daily temperature and precipitation[J]. 中国科学院青藏高原研究所,2018,249.
APA	Cao, Ruyin,Shen, Miaogen,Zhou, Ji,&Chen, Jin.(2018).Modeling vegetation green-up dates across the Tibetan Plateau by including both seasonal and daily temperature and precipitation.AGRICULTURAL AND FOREST METEOROLOGY,249.
MLA	Cao, Ruyin,et al."Modeling vegetation green-up dates across the Tibetan Plateau by including both seasonal and daily temperature and precipitation".AGRICULTURAL AND FOREST METEOROLOGY 249(2018).