NWIPB OpenIR
Variability and Changes in Climate, Phenology, and Gross Primary Production of an Alpine Wetland Ecosystem
Kang, Xiaoming1,2; Hao, Yanbin3; Cui, Xiaoyong3; Chen, Huai4; Huang, Sanxiang5; Du, Yangong6; Li, Wei1,2; Kardol, Paul7; Xiao, Xiangming8,9; Cui, Lijuan1,2
2016-05-01
发表期刊REMOTE SENSING
卷号8期号:5
文章类型Article
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.
关键词Climate Change Phenology Vpm Gross Primary Production Qinghai-tibetan Plateau Alpine Wetland
WOS标题词Science & Technology ; Technology
DOI10.3390/rs8050391
关键词[WOS]TIBETAN PLATEAU ; NORTHERN-HEMISPHERE ; VEGETATION GROWTH ; SOUTHERN AFRICA ; CARBON-CYCLE ; CHINA ; FOREST ; CO2 ; RESPONSES ; DROUGHT
收录类别SCI
语种英语
项目资助者National Nonprofit Institute Research Grant from CAFINT(CAFINT2014K06) ; National Youth Science Foundation of China(31300417) ; National Natural Science Foundation of China(31170459) ; Si Chuan Province Youth Scientific and technological innovation research team Grant(2015TD0026) ; NASA Earth Observing System (EOS) Data Analysis Program(NNX09AE93G)
WOS研究方向Remote Sensing
WOS类目Remote Sensing
WOS记录号WOS:000378406400035
引用统计
被引频次:50[WOS]   [WOS记录]     [WOS相关记录]
文献类型期刊论文
条目标识符http://210.75.249.4/handle/363003/6486
专题中国科学院西北高原生物研究所
作者单位1.Chinese Acad Forestry, Inst Wetland Res, Beijing Key Lab Wetland Serv & Restorat, Beijing 100091, Peoples R China
2.Sichuan Zoige Wetland Ecosystem Res Stn, Beijing 624500, Tibetan Autonom, Peoples R China
3.Univ Chinese Acad Sci, Coll Life Sci, Beijing 100049, Peoples R China
4.Chinese Acad Sci, Chengdu Inst Biol, Chengdu 610041, Peoples R China
5.Beijing Gardens Green Bur, Beijing 100013, Peoples R China
6.Chinese Acad Sci, Key Lab Adaptat & Evolut Plateau Biota, Northwest Inst Plateau Biol, Xining 810008, Peoples R China
7.Swedish Univ Agr Sci, Dept Forest Ecol & Management, S-90183 Umea, Sweden
8.Univ Oklahoma, Dept Microbiol & Plant Biol, Ctr Spatial Anal, Norman, OK 73019 USA
9.Fudan Univ, Inst Biodivers Sci, Shanghai 200433, Peoples R China
推荐引用方式
GB/T 7714
Kang, Xiaoming,Hao, Yanbin,Cui, Xiaoyong,et al. Variability and Changes in Climate, Phenology, and Gross Primary Production of an Alpine Wetland Ecosystem[J]. REMOTE SENSING,2016,8(5).
APA Kang, Xiaoming.,Hao, Yanbin.,Cui, Xiaoyong.,Chen, Huai.,Huang, Sanxiang.,...&Cui, Lijuan.(2016).Variability and Changes in Climate, Phenology, and Gross Primary Production of an Alpine Wetland Ecosystem.REMOTE SENSING,8(5).
MLA Kang, Xiaoming,et al."Variability and Changes in Climate, Phenology, and Gross Primary Production of an Alpine Wetland Ecosystem".REMOTE SENSING 8.5(2016).
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