Knowledge Management System of Northwest Institute of Plateau Biology, CAS
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 |
DOI | 10.3390/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 | |
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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