Variability and Changes in Climate, Phenology, and Gross Primary Production of an Alpine Wetland Ecosystem

doi:10.3390/rs8050391

	Variability and Changes in Climate, Phenology, and Gross Primary Production of an Alpine Wetland Ecosystem
	Kang, XM; Hao, YB; Cui, XY; Chen, H; Huang, SX; Du, YG; Li, W; Kardol, P; Xiao, XM; Cui, LJ
刊名	REMOTE SENSING
	2016
卷号	8 期号:5 页码:8050391（1-14）
关键词	Climate Change Phenology Vpm Gross Primary Production Qinghai-tibetan Plateau Alpine Wetland
DOI	10.3390/rs8050391
产权排序	4
文献子类	Article
英文摘要	Quantifying the variability and changes in phenology and gross primary production (GPP) of alpine wetlands in the Qinghai-Tibetan Plateau under climate change is essential for assessing carbon (C) balance dynamics at regional and global scales. In this study, in situ eddy covariance (EC) flux tower observations and remote sensing data were integrated with a modified, satellite-based vegetation photosynthesis model (VPM) to investigate the variability in climate change, phenology, and GPP of an alpine wetland ecosystem, located in Zoige, southwestern China. Two-year EC data and remote sensing vegetation indices showed that warmer temperatures corresponded to an earlier start date of the growing season, increased GPP, and ecosystem respiration, and hence increased the C sink strength of the alpine wetlands. Twelve-year long-term simulations (2000-2011) showed that: (1) there were significantly increasing trends for the mean annual enhanced vegetation index (EVI), land surface water index (LSWI), and growing season GPP (R-2 >= 0.59, p < 0.01) at rates of 0.002, 0.11 year(-1) and 16.32 g.C.m(-2).year(-1), respectively, which was in line with the observed warming trend (R-2 = 0.54, p = 0.006); (2) the start and end of the vegetation growing season (SOS and EOS) experienced a continuous advancing trend at a rate of 1.61 days.year(-1) and a delaying trend at a rate of 1.57 days.year(-1) from 2000 to 2011 (p <= 0.04), respectively; and (3) with increasing temperature, the advanced SOS and delayed EOS prolonged the wetland's phenological and photosynthetically active period and, thereby, increased wetland productivity by about 3.7-4.2 g.C.m(-2).year(-1) per day. Furthermore, our results indicated that warming and the extension of the growing season had positive effects on carbon uptake in this alpine wetland ecosystem.
学科主题	Remote Sensing
资助项目	Cui, Xiaoyong/0000-0001-7592-5866 ; Chen, Huai/0000-0001-6208-1481 ; Kardol, Paul/0000-0001-7065-3435
项目编号	Cui, Xiaoyong/B-3669-2016 ; Chen, Huai/A-7418-2015
语种	英语
资助机构	National Nonprofit Institute Research Grant from CAFINT [CAFINT2014K06] ; National Nonprofit Institute Research Grant from CAFINT [CAFINT2014K06] ; National Youth Science Foundation of China [31300417] ; National Youth Science Foundation of China [31300417] ; National Natural Science Foundation of China [31170459] ; National Natural Science Foundation of China [31170459] ; Si Chuan Province Youth Scientific and technological innovation research team Grant [2015TD0026] ; Si Chuan Province Youth Scientific and technological innovation research team Grant [2015TD0026] ; NASA Earth Observing System (EOS) Data Analysis Program [NNX09AE93G] ; NASA Earth Observing System (EOS) Data Analysis Program [NNX09AE93G] ; National Nonprofit Institute Research Grant from CAFINT [CAFINT2014K06] ; National Nonprofit Institute Research Grant from CAFINT [CAFINT2014K06] ; National Youth Science Foundation of China [31300417] ; National Youth Science Foundation of China [31300417] ; National Natural Science Foundation of China [31170459] ; National Natural Science Foundation of China [31170459] ; Si Chuan Province Youth Scientific and technological innovation research team Grant [2015TD0026] ; Si Chuan Province Youth Scientific and technological innovation research team Grant [2015TD0026] ; NASA Earth Observing System (EOS) Data Analysis Program [NNX09AE93G] ; NASA Earth Observing System (EOS) Data Analysis Program [NNX09AE93G]
内容类型	期刊论文
源URL	[http://210.75.237.14/handle/351003/28126]
专题	成都生物研究所_生态研究
通讯作者	Cui, LJ (reprint author), Chinese Acad Forestry, Inst Wetland Res, Beijing Key Lab Wetland Serv & Restorat, Beijing 100091, Peoples R China.; Cui, LJ (reprint author), Sichuan Zoige Wetland Ecosystem Res Stn, Beijing 624500, Tibetan Autonom, Peoples R China.
推荐引用方式 GB/T 7714	Kang, XM,Hao, YB,Cui, XY,et al. Variability and Changes in Climate, Phenology, and Gross Primary Production of an Alpine Wetland Ecosystem[J]. REMOTE SENSING,2016,8(5):8050391（1-14）.
APA	Kang, XM.,Hao, YB.,Cui, XY.,Chen, H.,Huang, SX.,...&Cui, LJ .(2016).Variability and Changes in Climate, Phenology, and Gross Primary Production of an Alpine Wetland Ecosystem.REMOTE SENSING,8(5),8050391（1-14）.
MLA	Kang, XM,et al."Variability and Changes in Climate, Phenology, and Gross Primary Production of an Alpine Wetland Ecosystem".REMOTE SENSING 8.5(2016):8050391（1-14）.