Global S&T Development Trend Analysis Platform of Resources and Environment
DOI | 10.1002/joc.5547 |
Spatial and temporal patterns of rainfall variability and its relationship with land surface phenology in central east Argentina | |
Celleri, Carla1,2; Zapperi, Georgina1,2; Gonzalez Trilla, Gabriela3,4; Pratolongo, Paula1,2 | |
2018-08-01 | |
发表期刊 | INTERNATIONAL JOURNAL OF CLIMATOLOGY |
ISSN | 0899-8418 |
EISSN | 1097-0088 |
出版年 | 2018 |
卷号 | 38期号:10页码:3963-3975 |
文章类型 | Article |
语种 | 英语 |
国家 | Argentina |
英文摘要 | Transition zones between dry and humid climates are highly sensitive areas where small changes in the spatial and temporal distribution of rainfall may have vast consequences on vegetation development. Rainfall regimes are expected to change worldwide and predictions include variations in total annual precipitation and timing of rain events. In this context, evaluating the relationship between vegetation activity and rainfall variability along transition zones is particularly relevant. In this study, 54 years (1961-2013) of gridded monthly rainfall data (Climatic Research Unit Time-Series Version 3.22 [CRU TS3.22]) were used to analyse annual and inter-annual rainfall variability. Land surface phenology (LSP) metrics (2000-2013) were derived from MODIS 16-day composites Normalized Difference Vegetation Index (NDVI) data (MOD13Q1 product) and relationship between rainfall variability and LSP metrics was assessed. Annual rainfall showed a strong seasonality in the northeast of the study area that diminishes towards the southwest. Inter-annual rainfall variability, which showed a significant 8-year cycle periodicity after 1980, was stronger in the southwest of the region. For most of the study area, summer rainfall (November-January) showed significant negative correlation with August-October Southern Oscillation Index (SOI) average, although this connection was not reflected in annual precipitation totals. Regarding vegetation response to rainfall variability, two main areas were identified where differences in LSP metrics between wet and dry years were larger than the average. The first one was a zone within the humid to semi-arid transition belt, where NDVI maximum, NDVI amplitude and NDVI integral showed higher values during wet years. The second one was the central north area, which showed higher NDVI amplitude values during dry years. In the study area, water availability is a sensitive issue for natural ecosystems, agriculture and cattle-raising. These results provide a better understanding of the relationship between rainfall variability and vegetation changes, which is useful information for the development of future management policies. |
英文关键词 | climatic transition ENSO land surface phenology metrics NDVI rainfall variability vegetation response |
领域 | 气候变化 |
收录类别 | SCI-E |
WOS记录号 | WOS:000440826000014 |
WOS关键词 | NET PRIMARY PRODUCTIVITY ; TIME-SERIES ; VEGETATION PHENOLOGY ; CLIMATE-CHANGE ; WATER-USE ; NDVI ; PRECIPITATION ; RESPONSES ; SOIL ; DYNAMICS |
WOS类目 | Meteorology & Atmospheric Sciences |
WOS研究方向 | Meteorology & Atmospheric Sciences |
引用统计 | |
文献类型 | 期刊论文 |
条目标识符 | http://119.78.100.173/C666/handle/2XK7JSWQ/37185 |
专题 | 气候变化 |
作者单位 | 1.Univ Nacl Sur, CONICET, Inst Argentino Oceanog IADO, Cno La Carrindanga Km 7 E1, RA-8000 Bahia Blanca, Buenos Aires, Argentina; 2.Univ Nacl Sur, Dept Biol Bioquim & Farm, Bahia Blanca, Buenos Aires, Argentina; 3.Univ Nacl San Martin, Inst Invest & Ingn Ambiental, Lab Ecol Teledetecc & Ecoinformat, San Martin, Argentina; 4.Consejo Nacl Invest Cient & Tecn, Buenos Aires, DF, Argentina |
推荐引用方式 GB/T 7714 | Celleri, Carla,Zapperi, Georgina,Gonzalez Trilla, Gabriela,et al. Spatial and temporal patterns of rainfall variability and its relationship with land surface phenology in central east Argentina[J]. INTERNATIONAL JOURNAL OF CLIMATOLOGY,2018,38(10):3963-3975. |
APA | Celleri, Carla,Zapperi, Georgina,Gonzalez Trilla, Gabriela,&Pratolongo, Paula.(2018).Spatial and temporal patterns of rainfall variability and its relationship with land surface phenology in central east Argentina.INTERNATIONAL JOURNAL OF CLIMATOLOGY,38(10),3963-3975. |
MLA | Celleri, Carla,et al."Spatial and temporal patterns of rainfall variability and its relationship with land surface phenology in central east Argentina".INTERNATIONAL JOURNAL OF CLIMATOLOGY 38.10(2018):3963-3975. |
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